bluuebunny/crossref_metadata_2025 huggingface dataset:
A high-fidelity multiresolution DEM model for Earth systems
Authors: Duan Xinqiao , Li Lin , Zhu Haihong , Ying Shen
Published: May 2016

Abstract. The topographic impacts on modifying Earth systems variability have been well recognised. As numerical simulations evolved to incorporate broader scales and finer processes, accurately embedding the underlying topography to simulate land – atmosphere – ocean interactions, or performing commensurate scale transformation to topography while considering high-fidelity retention have proven to be quite difficult. Numerical schemes from Earth systems either use empirical parameterization as sub-grid scale and downscaling skills to express topographic endogenous processes, or rely on insecure point interpolation to induce topographic forcing, which create bias and input uncertainties. DEM generalisation provides systematic topographic transformation by considering loyal fidelity, but existing heuristic approaches are not performed optimally because of point clustering, or are difficult to incorporate into numerical systems because of sliver triangles. This article proposes a novel high-fidelity multiresolution DEM model with high-quality grids to meet the challenges of scale transformation. The generalized DEM model is initially approximated as a triangulated irregular network (TIN) via selected terrain feature points, control points, and possible embedded terrain features. The TIN surface is then optimized through an energy-minimized centroidal Voronoi tessellation (CVT). By devising a robust discrete curvature as a density function and exact geometry clipping as an energy reference, the developed curvature CVT (cCVT) converges, the generalized model evolves to a further approximation to the original DEM surface, and the points and their dual cells become equalized with the curvature distribution, exhibiting a quasi-uniform high-quality grid. The cCVT model is then evaluated on real LiDAR-derived DEM datasets compared to the classical heuristic method. The experimental results show that the cCVT multiresolution model outperforms classical heuristic DEM generalisations in terms of both surface approximation precision and surface morphology retention.
Imaginário e espacialidade vivida em narrativas quilombolas, Pimenteiras do Oeste – Rondônia, Brasil
Authors: Pinheiro Zairo Carlos da Silva , Sahr Cicilian Luiza Löwen
Published: May 2016

Resumo Esse artigo busca discutir o imaginário na espacialidade vivida levando em conta a oralidade de sujeitos quilombolas. Para tanto, estuda-se o caso concreto de Pimenteiras do Oeste em Rondônia (RO) à luz das narrativas de seus quilombolas e também de teóricos da fenomenologia. Acredita-se que a reivindicação de um espaço quilombola, a Fazenda Santa Cruz, esteja sustentada tanto pelo imaginário social e pela espacialidade construída e reconstruída ao longo da história do grupo, como também - e principalmente - pelo imaginário social recente, tornado visível a partir da Constituição Federal de 1988. A pesquisa demonstra que a vontade de “ser quilombola” perpassa pelo imaginário de diferentes discursos, e que este imaginário se mescla com as espacialidades do grupo, tornando-os um dependente do outro.Palavras-chave: imaginário; espacialidades; narrativas; quilombolas; Rondônia. Abstract This article is discussing the function of imaginaries in lived spatialities, based on an investigation on the orality of quilombolas. As such, it is directed towards a case study in Pimenteiras do Oeste in Rondonia (Brazil), a place which is understood through the narratives of its quilombola population as well as through phenomenological methods.  Its premises are that the claim for a quilombola space, in our case the Fazenda Santa Cruz, is based on a connection between social imaginary and its produced spatiality, on one hand grounded on a long-term lived experience of the group, and on the other referring to a more recent imaginary that is linked to the Federal Constitution of Brazil from 1988. Throughout the research it appears that the will to “be quilombola” is passing through the imaginary of several discourses, and that these imaginaries do mix within the lived spatialities of the group, turning each element dependent on the other.Keywords: imaginary; spatiality; narratives; quilombolas; Rondonia.  ResumenEl presente artículo discute lo imaginario en la espacialidad vivida a la luz de la oralidad de sujetos quilombolas (cimarrones). El caso de Pimenteiras do Oeste, Rondônia, es estudiado a partir de las narrativas de los quilombolas a través del análisis de la fenomenología. La demanda de un espacio quilombola, la Hacienda Santa Cruz, es apoyada tanto por el imaginario social y la espacialidad construida y reconstruida a lo largo de la historia del grupo, pero también -  sobre todo - por el imaginario social reciente, que se hizo visible desde la Constitución Federal de 1988. La investigación muestra que el deseo de "ser quilombola" está presente en los diferentes discursos, y éste imaginario está mezclado además, con la espacialidad del grupo estudiado, haciéndolos interdependientes. Palabras Clave: imaginario; espacialidad; narraciones; quilombolas (cimarrones); Rondônia.
Ensino carregado de teoria: uma experiência inspiradora junto ao Grupo “Epistemologia, História e Didática das Ciências Naturais”
Authors: Reis Júnior Dante Flávio da Costa
Published: May 2016

ResumoNeste texto, documentamos uma experiência recente de testemunho das atividades de um grupo de pesquisa (liderado pelo Prof. Dr. Agustín Adúriz-Bravo) empenhado em conceber, discutir e aplicar modos de aprimoramento do ensino de ciências. Chama a atenção seu especial compromisso com questões ligadas à Filosofia da Ciência – fato que faz emergir no seio do grupo o interesse pela capacitação epistemológica de atuais e futuros mestres. No artigo apresentamos as características gerais do grupo, destacando a natureza da produção intelectual de seu mentor, Adúriz-Bravo. Ademais, ressaltamos valor e mérito dos estudos – predicados que, a nosso juízo, poderiam ser inspiradores de uma nova perspectiva para as pesquisas em Ensino de Geografia.Palavras-chave: Ensino e Epistemologia; Grupo “GEHyD”; Unidades Didáticas. AbstractIn this paper, we report a recent witness experience of the activities of a research group (led by Prof. Dr. Agustín Aduriz-Bravo), engaged in designing, discuss and apply enhancement modes of science education. Draws attention their special commitment to Philosophy of Science issues – a fact that expresses an interest in epistemological training of current and future teachers. The paper presents the general characteristics of the group, highlighting the nature of the intellectual production of his mentor, Adúriz-Bravo. Furthermore, we emphasize value and merit of these studies – qualities that, in our opinion, could inspiring a new perspective for Geography Teaching research.Keywords: Teaching and Epistemology; “GEHyD” Group; Didactical Units. ResumenEn este trabajo, se presenta una experiencia reciente de testimonio de las actividades de de un grupo de investigación (dirigido por el Prof. Dr. Agustín Adúriz-Bravo) dedicado a diseñar, reflexionar y aplicar modos de perfeccionamiento de la educación científica. Llama la atención su especial compromiso con los temas de la Filosofía de la Ciencia – hecho que expresa un interés en la formación epistemológica de los actuales y futuros profesores. El artículo presenta las características generales del grupo, destacando la naturaleza de la producción intelectual de su mentor, Adúriz-Bravo. Además, resalta valor y mérito de estos estudios – virtudes que, en nuestra opinión, podrían inspirar a una nueva perspectiva para la investigación en Enseñanza de la Geografía.Palavras-chave: Enseñanza y Epistemología; Grupo “GEHyD”; Unidades Didácticas.
Patient-Reported Outcomes in Cemented and Uncemented Total Hip Replacements
Authors: Rolfson Ola , Donahue Gabrielle S. , Hallsten Mattias , Garellick Göran , Kärrholm Johan , Nemes Szilard
Published: May 2016

Introduction

Data from national registries have favored the use of cemented fixation in total hip replacement (THR) while other reports show no significant differences in implant survival between cemented and uncemented fixation using modern implants. It is important to investigate whether the method of fixation itself may affect patient-reported outcomes. Hence, this study sought to analyse if patient-reported outcomes measures (PROMs) differ depending on the type of fixation.

Methods

Data was used from the follow-up programme of the Swedish Hip Arthroplasty Register which comprises the EQ-5D, a visual analogue scale (VAS) on hip pain, as well as a VAS addressing satisfaction with the outcome of the hip replacement. 3,118 patients with uncemented THR due to primary osteoarthritis performed from 2002 to 2011 with complete 1-year follow-up were included in the study. A control group of patients with cemented THR (n = 3,118) were selected by matching on age, gender, Charnley class, and pre-operative health-related quality of life.

Results

After adjusting for age, gender, Charnley class, and baseline PROMs, multivariate linear regression analyses showed that uncemented fixation is associated with a larger improvement in EQ-5D index (B = 0.03, 95% CI 0.019, 0.041), EQ VAS (B = 2.58, 95% CI 1.65, 3.51), greater pain relief (B = -2.68, 95% CI -3.54, -1.82) and superior patient satisfaction (B = -2.56, 95% CI -3.52, -1.60) (all p<0.001).

Discussions

This study demonstrates that uncemented fixation is associated with better patient-reported outcomes. Factors unrelated to implant fixation, such as performance or selection bias, may also contribute to the difference.
Neutrophil to Lymphocyte Ratio May be a Predictive Marker of Poor Prognosis in Legg-Calvé-Perthes Disease
Authors: Kaymaz Burak , Büyükdogan Kadir , Kaymaz Nazan , Kömürcü Erkam , Golge Umut Hatay , Goksel Ferdi , Aksoy Mehmet Cemalettin
Published: May 2016

Background

Legg-Calvé-Perthes disease (LCPD) is the idiopathic avascular necrosis of the femoral head in childhood. The pathologic changes seen in the femoral head are likely a result of vascular factors. Blood neutrophil to lymphocyte (N/L) ratio is a simple marker of subclinical inflammation. This study aims to to analyse the predictive ability of N/L ratio for the prognosis in LCPD patients.

Methods

Patients who had been diagnosed as LCPD from 2008 to 2014 were investigated retrospectively and 40 LCPD patients (33 male and 7 female) and 25 healthy age and sex-matched children (controls) were included in the study. LCPD patients were divided into 2 groups according to expected prognosis (good prognosis expected Herring A and B patients as Group I and poor prognosis expected Herring B-C and C patients as Group II) and healthy children (control) were included in Group III. All the patients’ hematological markers were analysed.

Results

Mean age was 7.1 ± 2.0 years in group I (4.9-12 years), 8.3 ± 2.2 years (4-12.5 years) in group II and 7.8 ± 1.3 years (6-12 years) in group III. Mean values for Groups I, II and III for neutrophil to lymphocyte (N/L) ratio were 1.13 ± 0.65, 1.75 ± 0.95, 1.08 ± 0.37, respectively. The mean neutrophil to lymphocyte (N/L) ratio of Group II was higher than the other 2 groups (p = 0.003).

Conclusions

N/L ratio may give us information about the natural course of LCPD and may be used as independent predictor of prognosis in patients with LCPD.
Evaluation of Proinflammatory Cytokine and Neopterin Levels in Women with Papillary Thyroid Carcinoma
Authors: Beksac Kemal , Sonmez Cigdem , Cetin Bahadir , Kismali Gorkem , Sel Tevhide , Tuncer Yildirim , Kosova Funda
Published: May 2016

Introduction

Papillary thyroid cancer is a disease that has been associated with chronic inflammation. The purpose of this study is to measure the production of the proinflammatory cytokines IL-1β, IL-6 and IL-8 and neopterin, which is a novel biomarker for cellular immune response in papillary thyroid cancer.

Materials and methods

The serum IL-1β, IL-6, IL-8 and neopterin values of 31 papillary thyroid cancer patients undergoing bilateral total thyroidectomy were measured before and 20 days after surgery. The values were compared with those of 39 healthy controls.

Results

Serum IL-1β levels were similar across groups. IL-6 (p<0.001), IL-8 (p = 0.015) and neopterin levels (p = 0.002) were higher in presurgical samples and returned to normal following surgery.

Conclusions

The proinflammatory cytokines IL-6 and IL-8, but not IL-1β, were produced in greater amounts in papillary thyroid cancer. Serum neopterin seems to be a valid biological marker supporting the presence of papillary thyroid cancer.
Van casus-specifieke beleidsevaluatie naar systematische opbouw van kennis en ervaring
Authors: Knottnerus André
Published: May 2016

Van casus-specifieke beleidsevaluatie naar systematische opbouw van kennis en ervaring

Een lerende overheid heeft behoefte aan beleidsevaluaties die niet alleen van betekenis zijn voor het onderwerp waarop deze primair gericht zijn, maar ook bijdragen aan bredere, systematische opbouw van kennis en ervaring. Het interdepartementaal verbinden van expertise verruimt daarbij het zicht op factoren die het leren bevorderen of belemmeren.

Een centrale vraag is of de door het beleid beoogde publieke belangen inderdaad bevorderd worden. Beleidsevaluatie moet dan niet alleen gericht zijn op effectiviteit en doelmatigheid ten aanzien van relatief gemakkelijk meetbare indicatoren, maar ook op lastig te kwantificeren essentiële waarden zoals subjectief welzijn, rechtvaardigheid en maatschappelijke aanvaardbaarheid. Het verdient aanbeveling kostbare evaluatie-energie te concentreren op belangrijke kwesties waarover vooraf discussie of onzekerheid bestaat.

Uit een oogpunt van doelmatige beleidsvoorbereiding, en omdat de uitwerking van wetgeving en beleid ex post niet altijd eenvoudig is vast te stellen, is veel aandacht nodig voor ex ante evaluatie. Van onderzoek naar werkingsmechanismen van beleidsmaatregelen wordt in dit verband terecht veel verwacht.

Er is sprake van een paradoxaal spanningsveld tussen verwetenschappelijking en politisering van beleid. Daarom is stevig verankerde, onafhankelijke en onpartijdige beleidsevaluatie onmisbaar. Hoge methodologische kwaliteit biedt extra houvast om deze functie geloofwaardig te kunnen vervullen.

In het streven naar systematische opbouw van kennis en ervaring naast dossier-specifieke doelbereiking kan het helpen als evaluaties zowel een specifiek als een breder geldend algemeen deel bevatten. Belangrijk is ook te sturen op een evenwichtige evaluatieportfolio per beleidsterrein, met aandacht voor ex ante en ex post methoden, uiteenlopende waarden, en verschillende informatiebronnen. Naast best practices moet daarbij ook minder geslaagd beleid in beeld worden gebracht. Voor de bruikbaarheid van evaluaties voor de praktijk is goede vertegenwoordiging van het bottom-up perspectief noodzakelijk.

Evaluatie van beleid vereist gedegen inbedding binnen de nationale kennisinfrastructuur, effectieve samenwerking met kennisinstellingen en het up-to-date houden van het evalueren zelf. Dat is cruciaal voor het evaluatievermogen van de lerende overheid.
Perioperative intensive care in patients with brain tumours
Authors: Aquafredda Mariana A. , Piñero Gustavo R. , Moscote Salazar Luis R. , Polo Torres Carolina , Castella Leones Sandra M. , Godoy Daniel
Published: May 2016

The surgery of brain tumours is not free from complications, above all taking into account that today the patients operated are even older and with multiple comorbidities associated. The multidisciplinary preoperative evaluation aims at minimising the risks; nevertheless this evaluation has not yet been defined and is not based on a strong evidence. The detailed clinical history, the physical examination including functional status and the neuroimaging are the fundamental pillars.The more critical complications occur in the immediate postoperative period: cerebral oedema, postoperative haemorrhage, intracranial hypertension and convulsions; other complications, such as pulmonary thromboembolism or infections, develop lately but are not less severe. Every surgical approach has its own complications in addition to the ones common to the whole neurosurgery.
Growth Mechanism of Gold Nanorods in Binary Surfactant System
Authors: Kim Bo‐Mi , Seo Sun‐Hwa , Joe Ara , Shim Kyu‐Dong , Jang Eue‐Soon
Published: May 2016

In order to reveal the growth mechanism of gold nanorods (GNRs) in a binary surfactant system, we synthesized various GNRs by changing the concentration of the surfactants, AgNO3
, and HBr in the growth solution. We found that the benzyldimethylhexadecylammoniumchloride surfactant had weak interaction with the gold ions, but it could reduce the membrane fluidity. In addition, we could dramatically decrease the cetyltrimethylammonium bromide concentration required for GNR growth by adding an HBr solution. Notably, Ag+ ions were necessary to break the symmetry of the seed crystals for GNR growth, but increasing the concentration of Ag+ and Br− ions caused a decrease in the template size.
A ten‐week biochemistry lab project studying wild‐type and mutant bacterial alkaline phosphatase
Authors: Witherow D. Scott
Published: May 2016

This work describes a 10‐week laboratory project studying wild‐type and mutant bacterial alkaline phosphatase, in which students purify, quantitate, and perform kinetic assays on wild‐type and selected mutants of the enzyme. Students also perform plasmid DNA purification, digestion, and gel analysis. In addition to simply learning important techniques, students acquire novel biochemical data in their kinetic analysis of mutant enzymes. The experiments are designed to build on students' work from week to week in a way that requires them to apply quantitative analysis and reasoning skills, reinforcing traditional textbook biochemical concepts. Students are assessed through lab reports focused on journal style writing, quantitative and conceptual question sheets, and traditional exams. © 2016 by The International Union of Biochemistry and Molecular Biology, 44(6):555–564, 2016.
Multiple on‐line HPLC coupled with biochemical detection methods to evaluate bioactive compounds in Danshen injection
Authors: Peng Wen‐Bing , Zeng Qiu‐Hua , Li Dan‐Ping , Ding Tian‐Ming , Tan Jing‐Ling , Ding Xiao‐Ping
Published: May 2016

On‐line high performance liquid chromatography (HPLC) coupled with three biochemical detection (BCD) methods was applied to evaluate bioactive components in Danshen injection. On‐line HPLC‐photo‐diode array–fluorescence detection based on the fluorogenic substrate 7‐acetoxy‐1‐methyl quinolinium iodide, was built to search acetylcholinesterase (AChE) inhibitors in Danshen injection. On‐line HPLC coupled with the scavenging assay of 1,1‐diphenyl‐2‐picrylhydrazyl (DPPH) and 2,2′‐azinobis (3‐ethylbenzothiazoline‐6‐sulfonic acid) (ABTS) free radicals was developed to screen antioxidants. The three active profiles were obviously different. Radical scavenging profiles revealed seven strong peaks in the chromatographic fingerprint possessing obvious free radical inhibition effects, while some minor peaks exhibited stronger AChE inhibition activities. The main radical scavengers and AChE inhibitors were identified by HPLC‐MS. Several unknown ingredients showing strong AChE inhibition activities needed further identification except protocatechuic aldehydrate, salvianolic acid H or I and lithospermic acid. The on‐line multiple on‐line HPLC‐BCD methods will provide powerful tools in the field of pharmacognosy for fast‐track identification of interesting and/or novel bioactive compounds.
ChemInform Abstract: Solidification and Solid State Transformations in Fe‐Nd: A Revised Phase Diagram.
Authors: LANDGRAF F. J. G. , SCHNEIDER G. S. , VILLAS‐BOAS V. , MISSELL F. P.
Published: May 2016

A new stable ferromagnetic phase is found to exist in the Fe‐Nd system.
ChemInform Abstract: Electrochemical Production of Hydrogen and Sulfur by Low‐Temperature Decomposition of Hydrogen Sulfide in an Aqueous Alkaline Solution.
Authors: ANANI A. A. , MAO Z. , WHITE R. E. , SRINIVASAN S. , APPLEBY A. J.
Published: May 2016

The electrolysis is performed in a solution containing equimolar concentrations of NaOH and NaHS at 80 °C. In a double‐compartment cell with an ion‐selective Nafion membrane as separator, both crystalline elemental sulfur and high‐purity hydrogen gas are produced at high current efficiencies.
ChemInform Abstract: The Oxidation of Mo‐W‐Cr‐Pd Alloys
Authors: LEE D.‐B. , SIMKOVICH G.
Published: May 2016

in air or dry oxygen is studied in the range 1000‐1250 °C. The oxidation behavior of quaternary Mo‐W‐Cr‐Pd alloys (40‐45 wt.% Mo, 40‐45 wt.% W, 9‐19 wt.% Cr, 0.5‐1 wt.% Pd) is similar to that of ternary W‐Cr‐Pd alloys; however, the oxidation resistance of the Mo‐W‐Cr‐Pd alloys is higher and it is suggested that these alloys are one of the most oxidation‐resistant alloys of Mo or W developed to date.
ChemInform Abstract: Reduction of V2O5. Part 1. Reduction by Carbon Monoxide.
Authors: STANDER F. , VAN VUUREN C. P. J.
Published: May 2016

The final product of the reduction of V2O5 by CO is V2O3, while V6O13 and VO2 are observed to be formed as intermediates.
ChemInform Abstract: Structures of Sila Analogues of Cyclic Nucleotides.
Authors: UENO K. , FURUSAWA K. , KATSURA T.
Published: May 2016

The adenosine derivative (I) crystallizes in the space group P21 with Z=2.
ChemInform Abstract: Stereocontrolled Addition Reaction of Organometallics to Chiral α‐Keto Amides.
Authors: FUJISAWA T. , UKAJI Y. , FUNABORA M. , YAMASHITA M. , SATO T.
Published: May 2016

The best selectivity for the formation of (‐)‐(III) is realized when MeMgBr (II) and ZnCl2 are used, whereas the reaction of Me2TiCl2 in CH2Cl2 affords (‐)‐(IV) in highly stereoselective manner ((III):(IV) = 6:94).
ChemInform Abstract: Mechanism of the Cyclopropane “Walk” Rearrangement: Syntheses and Properties of 2‐Diazopropane‐Arene Adducts: A Regiospecific N2 Elimination.
Authors: KLAERNER F.‐G. + , GLOCK V. , HEMMES J.‐L.
Published: May 2016

The thermal and photochemical behavior of the title compounds (IX), (X) and (XI) is studied.
ChemInform Abstract: Rh(II)‐Catalyzed Isomerizations of Cyclopropenes. Evidence for Rh(II)‐Complexed Vinylcarbene Intermediates.
Authors: MUELLER P. + , PAUTEX N. , DOYLE M. P. , BAGHERI V.
Published: May 2016

The thermocatalytic rearrangements of cyclopropenes such as (I), (III), (V) or (VIII) are investigated in the presence of Rh(II)‐perfluorobutyrate.
ChemInform Abstract: t‐Butyldimethylsilyl Chloride Mediated Pummerer Reactions of 10‐Alkylsulfinylbornan‐2‐exo‐ols.
Authors: PYNE S. G. , DIKIC B.
Published: May 2016

The compounds (I) undergo a Pummerer‐type rearrangement yielding mainly imidazoles (III) with TBMSCl and imidazole or, in the presence of TBMSCl and DMAP, a disulfide (V) and a thioacetal (IV), respectively.
ChemInform Abstract: Reaction of N‐Arylsulfonylquinone Imines with Acylhydrazines.
Authors: AVDEENKO A. P. , EVGRAFOVA N. I. , TOLMACHEV A. A.
Published: May 2016

Quinone imines with high redox potential, e.g. (IV), (VI), react with hydrazides with high basicity, e.g. (II), under reduction of the quinoid system.
ChemInform Abstract: Synthesis and Some Conversions of Silicon‐Containing Acylvinyl Dithiocarbamates.
Authors: NAKHMANOVICH A. S. , KARNAUKHOVA R. V. , YAROSH O. G. , ELOKHINA V. N. , KALIKHMAN I. D. , GROMKOVA R. A.
Published: May 2016

Reaction of the silyl ethynyl ketones (I) with dithiocarbamic acids, prepared in situ from carbon disulfide (II) and the secondary amines (III) gives the acylvinyl dithiocarbamates (IV).
ChemInform Abstract: Protonation and Electrophilic Trichloromethylation of 2,5‐ and 2,4‐Dichlorothiophenes.
Authors: BELEN'KII L. I. , GROMOVA G. P. , KRAYUSHKIN M. M.
Published: May 2016

Trichloromethylation of the dichlorothiophene (I) gives the products (III)‐(V) the ratio of which depends on the molar ratio of AlCl3:(I) and the temperature.
ChemInform Abstract: Stereoselective Syntheses of α‐Substituted Cyclic Ethers and syn‐1,3‐Diols.
Authors: HOMMA K. , TAKENOSHITA H. , MUKAIYAMA T.
Published: May 2016

In the presence of a catalytic amount of Ph3C+SbCl6‐ or a catalyst system of Me3SiCl/SbCl5/SnI2, α‐substituted cyclic ethers such as (IV) or (VI) are stereoselectively prepared in a one‐pot procedure involving the addition of the ethoxyethene (II) to the lactones (I) or (V) followed by nucleophilic substitution of the initially formed silylated cyclic hemiacetals with the silyl nucleophiles (III).
ChemInform Abstract: Synthesis of Oxasteroidal Skeletons by (4 + 2)Type Cycloaddition of Coumarin and 6‐Methyl‐2‐pyrone with Siloxy Dienes Mediated by t‐Butyldimethylsilyl Triflate.
Authors: LEE Y.‐G. , UTSUMI Y. , OHKATA K. , AKIBA K.
Published: May 2016

The 2‐siloxypyrylium triflates (I), prepared upon treatment of pyrones with tert‐butyldimethylsilyl triflate, react with the dienyl silyl ethers (II) to produce the cycloadducts (III).
ChemInform Abstract: Syntheses of a Naturally Occurring Hydroxamic Acid and Its Analogues.
Authors: OHTA A. , TAKAHASHI N. , SHIROKOMA Y. , YUASA K. , KURIHARA T. , MIYAMAE H.
Published: May 2016

Chlorination of the methoxypyridone (I) with phosphoryl chloride and small amounts of PCl5 yields 2‐chloro‐3‐methoxypyridine (II) which is alkylated with trimethylaluminum (III) or the Grignard compounds (V) to produce the 2‐alkyl‐3‐methoxypyridines (IV).
ChemInform Abstract: Synthesis and Crystal Structure of Hydrogen‐Bonded Long‐Chain of 1:1‐Methanol:1‐(N‐Methylpyridoxylidenium)‐2‐(21‐pyridyl)hydrazine Iodide.
Authors: AVRAMOVICI‐GRISARU S. , COHEN S. , SAREL S.
Published: May 2016

Pyridoxal hydrochloride (I) is coupled with 2‐hydrazinopyridine (II) to produce the hydrazone hydrochloride (III) which is converted into the free base.
ChemInform Abstract: Transaminations of Enaminones: A Synthesis of Tricyclic, N‐Aryl, 1,2,3‐Triazole‐Fused Pyridones.
Authors: CHAN T.‐M. , FRIARY R. , JONES H. , SCHWERDT J. H. , SEIDL V. , WATNICK A. S. , WILLIAMS S. M.
Published: May 2016

Fused pyridones of type (VI) show anti‐inflammatory activity.
ChemInform Abstract: Reinvestigation of the Reaction of 3‐Bromo‐4‐nitroquinoline 1‐Oxide with 1‐Morpholinocyclohexene.
Authors: MIURA Y. , FUJIMURA Y. , TAKAKU S. , HAMANA M.
Published: May 2016

3‐Bromo‐4‐nitroquinoline 1‐oxide (I) reacts with 1‐morpholinocyclohexene (II) in refluxing chloroform to yield the 3‐morpholino‐4‐nitro‐2‐(2‐oxocyclohexyl)quinoline (III) and/or the nitrotetrahydrobenzofuroquinoline (IV).
ChemInform Abstract: Response of 2‐Lithio‐4,5‐dihydrofuran. Ketone Adducts to Acid Catalysis.
Authors: PAQUETTE L. A. , LAWHORN D. E. , TELEHA C. A.
Published: May 2016

Lithiation of 4,5‐dihydrofuran (I) and subsequent reaction with the ketones (II) yield the alcohols (III).
ChemInform Abstract: Polycondensed Nitrogen Heterocycles. Part 23. Pyrrolo(3,2‐c)cinnolines by a Japp‐Klingemann‐Type Reaction.
Authors: CIRRINCIONE G. , ALMERICO A. M. , AIELLO E. , DATTOLO G.
Published: May 2016

An attempt is made to produce 2‐(2‐hydroxyphenyl)pyrroles (cf.
ChemInform Abstract: The Synthesis of 8‐Amino‐6‐N‐methyl‐1,2,3,5,6,7‐hexaazaacenaphthylene.
Authors: SICKLE A. V. , KAWASAKI A. M. , TOWNSEND L. B.
Published: May 2016

The cyanobis(methylthio)pyrazolopyrimidine (I) is protected with the dihydropyran (II) and then substituted with methylhydrazine (IV) to yield the hydrazino derivative (V).
ChemInform Abstract: Synthesis of Pyrrolo(1,2‐a)quinoxalines by 1,3‐Dipolar Cycloaddition Reaction. An Additional Reaction Mechanism via an Aziridine Intermediate.
Authors: KIM H. S. , KURASAWA Y. , YOSHII C. , MASUYAMA M. , TAKADA A. , OKAMOTO Y.
Published: May 2016

The title compounds (III) are formed via isoxazolo(2,3‐a)quinoxaline intermediates.
ChemInform Abstract: Reaction of Isocyanates with 2‐Phenyliminotetrahydro‐1,3‐thiazines and ‐oxazines.
Authors: NABEYA A. , ENDO T. , SAITO J. , MITSUISHI T. , INAHARA M.
Published: May 2016

The reaction of isocyanates, e.g. (II), with the title compounds of type (I) initially yields endo‐carbamoylated products such as (IV).
ChemInform Abstract: Intra‐ and Extraannularly Functionalized Chiral (2,2)Metacyclophanes: Synthesis, Circular Dichroism, and Structure‐Chiroptic Relationships.
Authors: VOEGTLE F. + , KNOPS P. , OSTROWICKI A.
Published: May 2016

The title compounds (III) and (V) are obtainable by simple one‐step cyclization reactions using the components (I) and, e.g., (II).
ChemInform Abstract: Synthesis of New Tricyclic Chiral P‐H Bond Phosphoranes, “Triquinphosphoranes”, from Chiral Diaminodiols. Asymmetric Addition on an Activated Carbonyl Compound.
Authors: VANNOORENBERGHE Y. , BUONO G.
Published: May 2016

The new class of tricyclic, chiral hydridophosphoranes, the "triquinphosphoranes" (III), are synthesized as shown and characterized NMR spectroscopically.
ChemInform Abstract: A Convenient Synthesis of (η‐C8H8)UI2(THF)2 (THF: Tetrahydrofuran), a Precursor to Monocyclooctatetraenyl Uranium Complexes.
Authors: BERTHET J.‐C. , LE MARECHAL J.‐F. , EPHRITIKHINE M.
Published: May 2016

The preparation of the title compound (III) represents the first synthesis of a monocyclooctatetraenyl uranium complex through degradation of the very stable uranocene (I).
ChemInform Abstract: A New Method for the Synthesis of Iron Azadiene and Diene Complexes. Reaction of (η2‐RCHCHCOR′)Fe(CO)4 with Aniline and Ylide.
Authors: SEMMELHACK M. F. , CHENG C. H.
Published: May 2016

The complexes (IIIb) and (IIIc) are stable up to ca. 110 °C, whereas their azadiene ligands are too reactive to be isolated.
ChemInform Abstract: The Reactivity of the Pentacyano(η1‐dioxygen)cobaltate(III) Ion in Aqueous Solution.
Authors: GUBELMANN M. H. , RUETTIMANN S. + , BOCQUET B. , WILLIAMS A. F.
Published: May 2016

From kinetic measurements a mechanism is deduced, which involves partial dissociation of the title complex forming with undissociated complex the η1:η1‐peroxo complex (I), which hydrolyzes to the products (II) and (III).
ChemInform Abstract: Easy, Reversible Addition of Mercury to Triplatinum Clusters: A Model for the First Step in Amalgamation of Platinum.
Authors: SCHOETTEL G. , VITTAL J. J. , PUDDEPHATT R. J.
Published: May 2016

The coordinatively unsaturated cluster complex (I) reacts easily with Hg to give the thermally stable Hg adduct (III) (space group P1, Z=2).
ChemInform Abstract: Anisotropic Plasma Etching of Sputtered Zinc Oxide
Authors: SWANSON G. D. , TAMAGAWA T. , POLLA D. L.
Published: May 2016

is performed using CF2Cl2/Ar gas mixtures.
ChemInform Abstract: Influence of the Band Edge Position Upon the Reduction Kinetics and the Etching Behavior at the GaP‐Fe(CN)3‐ 6 Interface.
Authors: GOOSSENS H. H. , VERMEIR I. E. , VANDEN KERCHOVE F. , GOMES W. P.
Published: May 2016

Investigations of the etching kinetics in the darkness for n‐ and p‐GaP(111) and (111) crystal faces in alkaline Fe(CN)63‐ solutions by using a flow‐cell setup, show the etching mechanism to be purely electroless.
ChemInform Abstract: Chemical Preparation, Crystallographic and Structural Features for a New Cyclotriphosphate: (NH4)(NH3‐NH3)P3O9·4 H2O.
Authors: ELKAMEL J. , JOUINI A.
Published: May 2016

The title compound (IV) crystallizes in the monoclinic space group P21/n with Z=4.
ChemInform Abstract: How Do Two C‐C Double Bonds Add to One M‐M Triple Bond? Structure and Bonding in Bis(η2‐ethylene)hexakis(neopentoxy)ditungsten.
Authors: CAYTON R. H. , CHACON S. T. , CHISHOLM M. H. , HUFFMAN J. C.
Published: May 2016

In the reaction between (I) and (II) an initial reversible equilibrium involving a bis‐ethylene adduct (III) is observed.
ChemInform Abstract: Intramolecular Photocycloaddition of N‐Benzylstyrylacetamides. (2 + 2)‐Addition of Styrenes to Benzenes.
Authors: AOYAMA H. , ARATA Y. , OMOTE Y.
Published: May 2016

Irradiation of the styrylacetamides (I) in methanol results in cyclization, forming the fused cyclobutanes (II).
ChemInform Abstract: π‐Facial Selectivity in Diels‐Alder Reactions of C‐2‐Vinyl Glycals. Stereocontrolled Route to Annulated C‐Glycopyranosides.
Authors: BURNOUF C. , LOPEZ J. C. , CALVO‐FLORES F. G. , LOS ANGELES LABORDE M. , OLESKER A. , LUKACS G.
Published: May 2016

The diene (I) reacts with maleic anhydride (II) to produce selectively the cycloadduct (III).
ChemInform Abstract: Stereochemistry of the Thermal Acetylenic Cope Rearrangement. Experimental Test for a 1,4‐Cyclohexenediyl as a Mechanistic Intermediate.
Authors: OWENS K. A. , BERSON J. A.
Published: May 2016

The acetylenic Cope rearrangement between (E)/(Z) mixtures of the 4‐methyl‐5‐hepten‐1‐ynes (I) and (II) and the 4‐methyl‐1,2,5‐heptatrienes (III) and (IV) is investigated using deuterated as well as optically active precursors.
ChemInform Abstract: Origin of High Reactivity of Alkylhydroperoxides in Several Vanadium(V) Compounds.
Authors: NISHIDA Y. , YAMADA K.
Published: May 2016

To elucidate the mechanism of selective epoxidation of olefins by alkylhydroperoxides catalyzed by d0 metals, e.g. vanadium, studies on the reaction between DPBF (1,3‐diphenylisobenzofuran, one of the efficient singlet oxygen scavangers) and V(V) complexes containing alkylhydroperoxides such as tBuO‐OH are carried out.
ChemInform Abstract: Ruthenium Complex‐Catalyzed Selective Deoxygenation of Ketoximes to Ketimines.
Authors: AKAZOME M. , TSUJI Y. , WATANABE Y.
Published: May 2016

The ketoximes (I) react with CO (pressure 20 kg/cm2) in the presence of a ruthenium carbonyl complex as the catalyst to form the imines (II).
ChemInform Abstract: Reactions of Perfluoroalkanesulfonyl Chlorides with Aromatic Compounds Catalyzed by a Ruthenium(II) Complex.
Authors: KAMIGATA N. , FUKUSHIMA T. , YOSHIDA M.
Published: May 2016

The aromatic compounds (I) react with the perfluoroalkanesulfonyl chlorides (II) to form the substitution products (III).
ChemInform Abstract: Novel Synthesis of 2‐Aminomethyl‐1,3‐butadienes from N,O‐Acetals.
Authors: ARENZ T. , FRAUENRATH H.
Published: May 2016

The N,O‐acetals (I) are the starting compounds for a readily effected synthesis of the title compounds (VI) via the intermediates (III), (IV), and (V).
ChemInform Abstract: A Novel Enantiospecific Synthesis of (S)‐(‐)‐Methyl 6,8‐Dihydroxyoctanoate, a Precursor of (R)‐(+)‐α‐Lipoic Acid.
Authors: DASARADHI L. , FADNAVIS N. W. , BHALERAO U. T.
Published: May 2016

The methyl heptenoate (I) undergoes addition reaction with tribromomethane (II) in the presence of copper to give the tribromo ester (III).
ChemInform Abstract: Reductive Dehalogenation of Halogen Derivatives of 1,1′‐Bi(bicyclo‐(1.1.1)pentane).
Authors: SADOVAYA, N K. , BLOKHIN A. V. , TYUREKHODZHAEVA M. A. , GRISHIN YU. K. , SURMINA L. S. , KOZ'MIN A. S. , ZEFIROV N. S.
Published: May 2016

Treatment of 3,3'‐diiodo‐1,1‐bi(bicyclo(1.1.1)pentane) (I) with tributylstannane gives the parent hydrocarbon (II).
ChemInform Abstract: A Novel Electrochemical Method for Benzoylation of Aminoalcohols with Methyl Benzoates at Room Temperature.
Authors: ARAI K. , TAMURA S. , MASUMIZU T. , KAWAI K. , NAKAJIMA S. , UEDA A.
Published: May 2016

The electrolytic formation of the hydroxyamides (IV), (VI) proceeds via aminoesters, e.g. (III).
ChemInform Abstract: Synthesis and Evaluation of the Analgesic and Antiinflammatory Activities of N,N′‐Bis(2‐hydroxybenzoyl)diaminoalkanes.
Authors: DAIDONE G. , RAFFA D. , MAGGIO B. , PLESCIA S. , MATERA M. , CARUSO A.
Published: May 2016

Eleven diaminoalkanes such as (I) are coupled with the salicylate (II) to produce the title compounds (III).
ChemInform Abstract: Stereoselective Synthesis of cis‐2,3‐Diarylaziridine by Rearrangement of Aryl‐Substituted N‐(Silylmethyl)imine.
Authors: KOMATSU M. , OHNO M. , TSUNO S. , OHSHIRO Y.
Published: May 2016

The N‐(silylmethyl)imines (I) undergo thermal rearrangement and cyclization to form the diarylaziridines (II) which are hydrolyzed to give the deprotected aziridines (III) as the main products with high cis‐selectivity.
ChemInform Abstract: Regio‐ and Stereoselective Oxetane Formation via Paterno‐Buechi Photocycloaddition.
Authors: FLEMING S. A. , JONES R. W.
Published: May 2016

The title reaction of the components (I) and (II) takes place with extremely high diastereoselectivity as shown by analysis of the major 2 + 2 photoproduct (III).
ChemInform Abstract: The Aqueous Base‐Induced Cyclization of N‐(3‐Halogenoacyl)amino Carboxylic Acids to β‐Lactams.
Authors: IRWIN V. P. , TIMONEY R. F.
Published: May 2016

Compounds (I) undergo unusually facile intramolecular N‐alkylation to novel β‐lactams (II).
ChemInform Abstract: Potential Antipsychotic Agents. Part 5. Synthesis and Antidopaminergic Properties of Substituted 5,6‐Dimethoxysalicylamides and Related Compounds.
Authors: HOEGBERG T. + , BEGTSSON S. , DE PAULIS T. , JOHANSSON L. , STROEM P. + , HALL H. , OEGREN S. O. +
Published: May 2016

The trimethoxybenzene (I) is converted into the substituted benzoic acids (II).
ChemInform Abstract: The Reaction of 1‐Methylindole with Diethyl Azodicarboxylate.
Authors: DIDA F. B. W. , GARCIA‐GRANDA S. , GOMEZ‐BELTRAN F. , JONES R. A. , PEREZ‐CARRENO E. , SEPULVEDA‐ARQUES J.
Published: May 2016

In order to complete the study of the reactivity of 5‐membered heterocycles, compound (I) is treated with (II).
ChemInform Abstract: Preparation of Alkyl‐Substituted Indoles in the Benzene Portion. Part 3.
Authors: MURATAKE H. , NATSUME M.
Published: May 2016

Acylation of 1‐tosylpyrrole (I) with acetic anhydride (IIa) or the acid chlorides (IIb) in the presence of Lewis acids yields the acyltosylpyrroles (III) and/or (IV) which are coupled with the Grignard reagent (V) in tetrahydrofuran to produce the alcohols (VI) or (VIII).
ChemInform Abstract: Synthesis and α2‐Adrenoceptor Effects of Substituted Catecholimidazoline and Catecholimidazole Analogues in Human Platelets.
Authors: MILLER D. D. , HAMADA A. , CLARK M. T. , ADEJARE A. , PATIL P. N. , SHAMS G. , ROMSTEDT K. J. , KIM S. U. , INTRASUKSRI U. , MCKENZIE J. L. , FELLER D. R.
Published: May 2016

The bisbenzyloxybenzaldehyde (I) reacts with diethoxymethylimidazole (II) to give the carbinol (III) which is transformed into the benzylimidazole (IV).
ChemInform Abstract: New Heterocyclic Derivatives of Benzimidazole with Germicidal Activity. Part 7. 2‐(5′‐Nitro‐2′‐furyl or ‐2′‐thienyl)benzimidazoles with Different Substituents in the 5‐Position.
Authors: PEDINI M. , DE MEO G. , RICCI A. , BASTIANINI L. , JACQUIGNON P.
Published: May 2016

The title compounds (III) are prepared by cyclocondensation of the o‐phenylenediamines (I) with the heterocyclic aldehydes (II) in the presence of potassium hexacyanoferrate(III).
ChemInform Abstract: Synthesis of 5‐Substituted Benzothiazolylimino‐3‐arylimino‐1,2,4‐dithiazolidines.
Authors: SINGH A. P. , BHATTACHARYA A. , VERMA V. K.
Published: May 2016

The 2‐aminobenzothiazole (I) is converted in three steps to the S‐allylisothiourea (VII) which is further coupled with the isothiocyanates (VIII) to yield the adducts (IX).
ChemInform Abstract: Furan o‐Aminonitriles as Precursors to Flavone Analogues.
Authors: CUTLER S. J. , EL‐KABBANI F. M. , KEANE C. , FISHER‐SHORE S. L. , BLANTON C. D.
Published: May 2016

The oxanorbornenes, obtained by Diels‐Alder reaction of the aminofurancarbonitriles (I) with methyl vinyl ketone (II), are directly dehydrated upon acidic work‐up to produce the 3‐cyano‐2‐hydroxyacetophenone (III).
ChemInform Abstract: A Novel Formation of Phenyl‐Substituted Pyridines by the Reaction of N‐(Diphenylphosphinyl)‐1‐azaallyl Anions with α,β‐Unsaturated Carbonyl Compounds. A New Synthetic Equivalent of Primary Vinylamines.
Authors: KOBAYASHI T. , KAWATE H. , KAKIUCHI H. , KATO H.
Published: May 2016

The azaallyl anions (II) and (VIII), derived from the corresponding imine (I) and enamine (VII), react with carbonyl compounds such as (III) and (IX) to give mainly pyridine derivatives such as (IV) and (X) via Michael addition, followed by intramolecular aza‐Horner‐Wittig reaction.
ChemInform Abstract: Synthesis and α‐Adrenolytic Activities of 2‐(1,4‐Benzodioxan‐2‐ylmethyl)‐6,7‐dimethoxy‐1,2,3,4‐tetrahydroisoquinoline Derivatives.
Authors: GLUSA E. , GRUENER H. + , HAGEN A. , LOHMANN D. , FOKEN H.
Published: May 2016

Cyclocondensation of β‐(3,4‐dimethoxyphenyl)ethylamine (I) with formaldehyde (II), followed by treatment with hydrochloric acid gives the tetrahydroisoquinoline derivative (III) which is coupled with 2‐chloromethyldihydrobenzodioxin (IV) to form the tetrahydroisoquinoline derivative (V).
ChemInform Abstract: Synthesis and Properties of a New Dihydroflavin: Reduction of a Flavinium Salt by Borocyanohydride.
Authors: SZCZESNA V. , MUELLER F. + , VERVOORT J.
Published: May 2016

The title compound (III) is prepared via the intermediate (II), which can only be observed in solution by 1H‐NMR.
ChemInform Abstract: 5,21‐Dimethyl‐8,24‐pentamethylenedioxy‐1,10,17,26‐tetra‐aza(2,2)(mo)2‐cyclophane.
Authors: FREDERICKSON M. , BAILEY N. A. , ADAMS H. , HASLAM E.
Published: May 2016

The title compound (III) (space group P212121 with Z=4) is acetylated yielding (V), a secondary amine in which inversion at the amino‐nitrogen atoms is inhibited at ambient temperature.
ChemInform Abstract: Chemistry of Organosilicon Compounds. Part 268. Synthesis, Properties, and Molecular Structure of Tetrakis(pentamethyldisilanyl)ethylene.
Authors: SEKIGUCHI A. , EBATA K. , KABUTO C. , SAKURAI H.
Published: May 2016

The tetrasilylethene (I) reacts with trimethylsilyllithium (II) to give the title compound (III), together with the tris(disilyl) derivative (IV).
ChemInform Abstract: Reaction of 2‐Hydroperfluoropropyl Azide with Some Phosphorous Acid Derivatives.
Authors: LERMONTOV S. A. , POPOV A. V. , SUKHOZHENKO I. I. , ZAVEL'SKII V. O. , MARTYNOV I. V.
Published: May 2016

The hexafluoropropyl azide (I) is coupled with trimethyl phosphite (II) to give dimethyl fluorophosphate (III) and the tetrafluoropropionitrile (IV).
ChemInform Abstract: Anodic Synthesis and Molecular Structure of Dodecaethylhexaamidobiphosphonium Diperchlorate.
Authors: ROMAKHIN A. S. , PALYUTIN F. M. , IGNAT'EV YU. A. , NIKITIN E. V. , KARGIN YU. M. , LITVINOV I. A. , NAUMOV V. A.
Published: May 2016

Anodic oxidation of hexaethylphosphorous triamide (I) in the presence of sodium perchlorate gives the biphosphonium salt (II).
ChemInform Abstract: The C‐O Bond Cleavage of Cyclic Ethers with Tris(phenylseleno)borane‐Lewis Acid.
Authors: KATAOKA T. , YOSHIMATSU M. , SHIMIZU H. , KAWASE Y. , HORI M.
Published: May 2016

Tris(phenylseleno)borane (II) reacts with the cyclic ethers (I), (IV), and (VII) under ring‐cleavage to produce the hydroxyalkyl selenoethers (III), (V) or (VIII), and (IX).
ChemInform Abstract: Stereoselective Synthesis and Characterization of 2‐Alkyl and 2‐(Hetero)aryl Substituted (Z)‐ and (E)‐1‐Trimethylsilyl‐1‐trimethylstannylethenes.
Authors: ROSSI R. , CARPITA A. , BELLINA F. , DE SANTIS M. , VERACINI C. A.
Published: May 2016

The title compounds (III), (IV), (VI), and (IX) are prepared with 99% stereoisomeric purity by the methods shown in the scheme.
ChemInform Abstract: Synthesis and Structure of Tetradentate Amido‐phenolate Manganese(III) Complexes; Procursors for High‐Valent Manganese Chelate Complexes.
Authors: BERTONCELLO K. , FALLON G. D. , MURRAY K. S.
Published: May 2016

A tetraanionic amido‐phenolate ligand reacts in alcoholic solution with Mn(II) acetate in air in the presence of bases such as KOH or Py to yield complexes such as (I), which can be transformed into (II) by dissolution in MeOH/Py.
ChemInform Abstract: Perchlorinated and Highly Chlorinated meso‐Tetraphenylporphyrins.
Authors: WIJESEKERA T. , MATSUMOTO A. , DOLPHIN D. , LEXA D.
Published: May 2016

The electron‐withdrawing chloro substituents in the porphyrinatoiron(III) complexes (Ib)‐(Id) cause anodic shifts in the half‐wave potentials relative to that of the unsubstituted compound (Ia).
ChemInform Abstract: Ring‐Opening of a Bicyclo(3.2.0)hepta‐1,3‐dienylcobalt(I) Complex Followed by Cycloaddition.
Authors: BUTENSCHOEN H. +
Published: May 2016

The four‐membered ring in (I) is opened at only 200 °C leading to an allyl‐diene system which can be trapped by (2 + 4) cycloaddition with dienophiles such as (III) to give the cycloadduct (IV).
ChemInform Abstract: Complexing Ability of a New Type of Bis‐Amidato Ligand. Crystal Structure of N,N′‐Bis(1‐methyl‐3‐oxo‐1‐butenyl)oxamidato Copper(II) (CuL); Spectroscopic and Magnetic Properties and Redox Behaviour of CuL and the Related Nickel(II), Cobalt(II) and Cobalt(III) Complexes.
Authors: CROS G. , GLEIZES A. , LAURENT J.‐P. , DARBIEU M.‐H.
Published: May 2016

The ligand (IIIb), prepared similarly to (IIIa) in 65% yield using isophthaloyl dichloride, undergoes breaking of the imine bonds on reaction with metallic ions.
ChemInform Abstract: Reaction of Carbon Dioxide with (Porphyrinato)aluminum Thiolates.
Authors: ARAI T. , SATO Y. , INOUE S.
Published: May 2016

The porphyrinato aluminum thiolate (I) reacts with CO2 (II) to form the alkyl thiocarbonates (III).
ChemInform Abstract: Chemistry of α‐Aminonitriles. Part 2. Aziridine‐2‐carbonitrile: Photochemical Formation from 2‐Aminopropenenitrile.
Authors: DRENKARD S. , FERRIS J. , ESCHENMOSER A.
Published: May 2016

Photoisomerization of 2‐aminopropenenitrile (I) leads to the aziridine (II); the larger part of the starting material, however, fragments to HCN and MeCN.
ChemInform Abstract: Intramolecular Cyanohydrin Elaboration. Construction of Corticosteroids from 17‐Ketosteroids.
Authors: LIVINGSTON D. A. , PETRE J. E. , BERGH C. L.
Published: May 2016

Cortexolone acetate (VII) (no yield given) and 17α‐hydroxyprogesterone (VIII) are synthesized via the cyanohydrin intermediate (III).
ChemInform Abstract: Peptide Synthesis Under High Pressure.
Authors: GANTE J. , KALTHOF U. , KLAERNER F.‐G. + , WEBER T.
Published: May 2016

The novel methodology described in the title permits the coupling of N‐protected, non‐activated amino acid alkyl esters such as (I) with sodium or other derivatives of simple amino acids (cf.
ChemInform Abstract: Phosphonic‐Acid Analogues of the N‐Acetyl‐2‐deoxyneuraminic Acids: Synthesis and Inhibition of Vibrio cholerae Sialidase.
Authors: WALLIMANN K. , VASELLA A.
Published: May 2016

The title compounds (‐)‐(IX) and (‐)‐(X) (formed from (‐)‐(VIII)) are prepared to compare their inhibitory activity with the one of the corresponding acids (‐)‐(XI) and (‐)‐(XII).
ChemInform Abstract: Reactivity Parameters of the Metal‐Assisted 1,2‐Cleavage of Penicillins.
Authors: ALPEGIANI M. , BEDESCHI A. , BISSOLINO P. , VISENTIN G. , ZARINI F. , PERRONE E. , FRANCESCHI G.
Published: May 2016

Treatment of the methyl dibromopenicillanate (I) with silver(I) acetate and subsequent acetylation with acetyl chloride (II) produce the 1,2‐secopenicillanate (III).
ChemInform Abstract: Nanometer‐Sized ZrO2 Particles Prepared by a Sol‐Emulsion‐Gel Method.
Authors: RAMAMURTHI S. D. , XU Z. , PAYNE D. A.
Published: May 2016

In the sol‐emulsion‐gel process, water droplets containing zirconium ions (ZrO(NO3)2) are suspended and stabilized in an organic nonpolar solvent (xylene) by addition of an appropriate surfactant (polyoxy‐ethylene sorbitan mono‐oleate).
ChemInform Abstract: Ceramics from Organometallic Polymers
Authors: PEUCKERT M. , VAAHS T. , BRUECK M. +
Published: May 2016

Review: (synthesis and applications of non‐oxide advanced ceramics like SiC, Si3N4, AlN, BN, or TiN.
ChemInform Abstract: Structure of the Heavy‐Fermion Superconductor UBe13.
Authors: MCELFRESH M. W. , HALL J. H. , RYAN R. R. , SMITH J. L. , FISK Z.
Published: May 2016

This first single crystal study of the heavy‐fermion superconductor UBe13 shows the compound to crystallize in the cubic system (Fm3c, Z = 8).
ChemInform Abstract: Structure of the Sodium Ion Conductor Na7Fe3(As2O7)4.
Authors: MASQUELIER C. , D'YVOIRE F. , RODIER N.
Published: May 2016

Crystals of the recently synthesized title compound are obtained by melting a mixture of composition Fe2O3 + 3.7 As2O5 + 5.1 Na4As2O7 at 1073 K and cooling at a rate of 100 K/h. The compound crystallizes in the monoclinic system (C2/c, Z=4).
ChemInform Abstract: Ordering of Copper Single‐Crystal Surfaces in Solution. Confirmation by Low Energy Electron Diffraction.
Authors: VILLEGAS I. , EHLERS C. B. , STICKNEY J. L.
Published: May 2016

It is demonstrated that crystallographic ordering of Cu single crystal electrode surfaces which have been disordered by oxidation or ion bombardment can be restored in situ by a chemical or electrochemical etch in mild acid solution (e.g.