bluuebunny/crossref_metadata_2025 huggingface dataset:
Expansão da cultura de soja, infraestrutura viária e desenvolvimento regional: a BR 158 e o Vale do Araguaia Mato-Grossense entre 1990 e 2010
Authors: Silva Margot Riemann Costa e , Leão Carlos , Silva Rosenilda Maria de Morais , Sousa Aline Dos Santos
Published: April 2016

O presente artigo relata pesquisa de indicadores de desenvolvimento regional no Vale do Araguaia Mato-grossense, a mesorregião Nordeste Mato-grossense, considerando o período de 1990 e 2010. A região é cortada pela BR 158, atualmente, um dos principais vetores da acelerada expansão do cultivo de soja para o interior do bioma amazônico. O forte avanço da produção de soja repercutiu em crescimento econômico acima das médias do estado do Mato Grosso e, também, do país. Entretanto, chama-se atenção para o fato de que os indicadores produtivos e sociais não acompanharam este movimento: as taxas de pobreza seguiram elevadas, aumentou o descompasso entre os diferentes setores produtivos (com forte retração da indústria) e se manteve significativa a defasagem da em relação às médias estaduais e nacionais em todos os estratos.Código JEL | O13; O18; Q13.
Emergência de novas cidades como negação da cidade: condomínios horizontais fechados na metrópole de Goiânia-GO
Authors: Moysés Aristides , Boaventura Deusa Maria Rodrigues , Borges Elcileni De Melo
Published: April 2016

Como parte integrante da “nova paisagem do poder e do dinheiro” que vem se desenhando na grande Goiânia a partir da década de 1990 e, sobretudo, dos anos 2000, chama a atenção o fenômeno urbano dos condomínios horizontais fechados (CHFs). Estes cada vez mais se tornam uma opção dos segmentos mais abastados (ricos e “classe média”), que passam a buscar residências e ambientes de negócio em bairros elitizados e socialmente isolados. Muito embora Goiânia possua características de uma cidade de médio porte, já é considerada hoje como “a terceira capital do país em número de condomínios fechados, proporcionalmente, ao número de habitantes”. Ao lado desse luxuoso fenômeno, que vem transformando profundamente a paisagem urbana de Goiânia, paira, sem soluções, a questão das moradias populares: veem-se perpetuar por anos a fio bairros extremamente carentes, em condições habitacionais de alta insalubridade, marcados por processos de ocupações irregulares e invasões ocasionais, para os quais o poder público tem agido com respostas apenas pontuais.Código JEL | O18; R14; R52.
O Estatuto da Cidade e o controle social do solo criado em Goiânia-GO
Authors: Silva Ranniel Martins , Moraes Lucia Maria
Published: April 2016

O solo criado é convencionado pelo Estatuto da Cidade. Seus parâmetros compõem os novos instrumentos de um Plano Diretor. O solo criado, também conhecido como Outorga Onerosa do Direito de Construir (OODC), tem como atributo ser um importante recurso na arrecadação no âmbito do município. A destinação de seus recursos demonstra intenções em prol do desenvolvimento urbanístico da cidade de forma sustentável. As normas regulamentadoras estabelecem as diretrizes desta política pública de ocupação e expansão urbana. Sua origem está nas cláusulas pétreas da Constituição Federal de 1988 e nas regulamentações complementares pelo Estatuto da Cidade em 2011. Ademais, há outras normas específicas e ferramentas apropriadas em prol do controle do crescimento territorial urbano e da função social da propriedade. O solo criado é tratado como uma das normativas legais do solo urbano da cidade de Goiânia desde 1994, antes do Estatuto da Cidade, baseado na implantação do Plano Diretor de 1991. Cidade planejada e construída na década de 1930, ao longo de seus 83 anos, desde o Plano Urbanístico inicial, o planejamento se destaca como um dos eixos de seu crescimento e desenvolvimento.Código JEL | O18; R14; R52.
Modeling nonlinear responses of DOC transport in boreal catchments in Sweden
Authors: Kasurinen Ville , Alfredsen Knut , Ojala Anne , Pumpanen Jukka , Weyhenmeyer Gesa A. , Futter Martyn N. , Laudon Hjalmar , Berninger Frank
Published: April 2016

Stream water dissolved organic carbon (DOC) concentrations display high spatial and temporal variation in boreal catchments. Understanding and predicting these patterns is a challenge with great implications for water quality projections and carbon balance estimates. Although several biogeochemical models have been used to estimate stream water DOC dynamics, model biases common during both rain and snow melt‐driven events. The parsimonious DOC‐model, K‐DOC, with 10 calibrated parameters, uses a nonlinear discharge and catchment water storage relationship including soil temperature dependencies of DOC release and consumption. K‐DOC was used to estimate the stream water DOC concentrations over 5 years for eighteen nested boreal catchments having total area of 68 km2 (varying from 0.04 to 67.9 km2). The model successfully simulated DOC concentrations during base flow conditions, as well as, hydrological events in catchments dominated by organic and mineral soils reaching NSEs from 0.46 to 0.76. Our semimechanistic model was parsimonious enough to have all parameters estimated using statistical methods. We did not find any clear differences between forest and mire‐dominated catchments that could be explained by soil type or tree species composition. However, parameters controlling slow release and consumption of DOC from soil water behaved differently for small headwater catchments (less than 2 km2) than for those that integrate larger areas of different ecosystem types (10–68 km2). Our results emphasize that it is important to account for nonlinear dependencies of both, soil temperature, and catchment water storage, when simulating DOC dynamics of boreal catchments.
Stratigraphy and evolution of the buried CO2 deposit in the Martian south polar cap
Authors: Bierson C. J. , Phillips R. J. , Smith I. B. , Wood S. E. , Putzig N. E. , Nunes D. , Byrne S.
Published: April 2016

Observations by the Shallow Radar instrument on Mars Reconnaissance Orbiter reveal several deposits of buried CO2 ice within the south polar layered deposits. Here we present mapping that demonstrates this unit is 18% larger than previously estimated, containing enough mass to double the atmospheric pressure on Mars if sublimated. We find three distinct subunits of CO2 ice, each capped by a thin (10–60 m) bounding layer (BL). Multiple lines of evidence suggest that each BL is dominated by water ice. We model the history of CO2 accumulation at the poles based on obliquity and insolation variability during the last 1 Myr assuming a total mass budget consisting of the current atmosphere and the sequestered ice. Our model predicts that CO2 ice has accumulated over large areas several times during that period, in agreement with the radar findings of multiple periods of accumulation.
Comparative study of two tsunamigenic earthquakes in the Solomon Islands: 2015 Mw 7.0 normal‐fault and 2013 Santa Cruz Mw 8.0 megathrust earthquakes
Authors: Heidarzadeh Mohammad , Harada Tomoya , Satake Kenji , Ishibe Takeo , Gusman Aditya Riadi
Published: April 2016

The July 2015 Mw 7.0 Solomon Islands tsunamigenic earthquake occurred ~40 km north of the February 2013 Mw 8.0 Santa Cruz earthquake. The proximity of the two epicenters provided unique opportunities for a comparative study of their source mechanisms and tsunami generation. The 2013 earthquake was an interplate event having a thrust focal mechanism at a depth of 30 km while the 2015 event was a normal‐fault earthquake occurring at a shallow depth of 10 km in the overriding Pacific Plate. A combined use of tsunami and teleseismic data from the 2015 event revealed the north dipping fault plane and a rupture velocity of 3.6 km/s. Stress transfer analysis revealed that the 2015 earthquake occurred in a region with increased Coulomb stress following the 2013 earthquake. Spectral deconvolution, assuming the 2015 tsunami as empirical Green's function, indicated the source periods of the 2013 Santa Cruz tsunami as 10 and 22 min.
Atlantic near‐term climate variability and the role of a resolved Gulf Stream
Authors: Siqueira Leo , Kirtman Ben P.
Published: April 2016

There is a continually increasing demand for near‐term (i.e., lead times up to a couple of decades) climate information. This demand is partly driven by the need to have robust forecasts and is partly driven by the need to assess how much of the ongoing climate change is due to natural variability and how much is due to anthropogenic increases in greenhouse gases or other external factors. Here we discuss results from a set of state‐of‐the‐art climate model experiments in comparison with observational estimates that show that an assessment of predictability requires models that capture the variability of major oceanic fronts, which are, at best, poorly resolved and may even be absent in the near‐term prediction of Intergovernmental Panel on Climate Change class models. This is the first time that air‐sea interactions associated with resolved Gulf Stream sea surface temperature have been identified in the context of a state‐of‐the‐art global coupled climate model with inferred near‐term predictability.
Risk of Infection Associated With Subsequent Biologic Agent Use After Rituximab: Results From a National Rheumatoid Arthritis Patient Registry
Authors: Harrold Leslie R. , Reed George W. , Karki Chitra , Magner Robert , Shewade Ashwini , John Ani , Kremer Joel M. , Greenberg Jeffrey D.
Published: April 2016

Objective

To assess whether the time between the last rituximab infusion and initiation of a different biologic agent influenced infection risk in patients with rheumatoid arthritis (RA).

Methods

Patients with RA who newly initiated rituximab within the Consortium of Rheumatology Researchers of North America registry were included if they switched to a nonrituximab biologic agent and had ≥1 followup visit within 12 months of switching. Patients were categorized by duration of time between their last rituximab infusion and initiation of a subsequent biologic agent (≤5 months, 6–11 months, and ≥12 months). The primary outcome was time to first infectious event. Adjusted Cox regression models estimated the association between time to starting a subsequent biologic agent and infection.

Results

A total of 44 overall infections (7 serious, 37 nonserious) were reported during the 12‐month followup in the 215 patients included in this analysis (104 switched at ≤5 months, 67 at 6–11 months, and 44 at ≥12 months). Median (interquartile range) time to infection was 4 (2–5) months. Infection rates per patient‐year in the ≤5‐month, 6–11‐month, and ≥12‐month groups were 0.34 (95% confidence interval [95% CI] 0.22–0.52), 0.30 (95% CI 0.17–0.52), and 0.41 (95% CI 0.22–0.77), respectively. After adjustment, time to switch to a subsequent biologic agent was not associated with infection, which remained unchanged when number and rate of rituximab retreatments were included in the models.

Conclusion

In this real‐world cohort of patients with RA, infection rates ranged from 0.30 to 0.41 per patient‐year, with no significant difference in the rate between patients who initiated a subsequent biologic agent earlier versus later after rituximab treatment.
Size‐Induced Switching of Nanowire Growth Direction: a New Approach Toward Kinked Nanostructures
Authors: Shen Youde , Lebedev Oleg I. , Turner Stuart , Van Tendeloo Gustaaf , Song Xiaohui , Yu Xuechao , Wang Qijie , Chen Hongyu , Dayeh Shadi A. , Wu Tom
Published: April 2016

Exploring self‐assembled nanostructures with controllable architectures has been a central theme in nanoscience and nanotechnology because of the tantalizing perspective of directly integrating such bottom‐up nanostructures into functional devices. Here, the growth of kinked single‐crystal In2O3 nanostructures consisting of a nanocone base and a nanowire tip with an epitaxial and defect‐free transition is demonstrated for the first time. By tailoring the growth conditions, a reliable switching of the growth direction from [111] to [110] or [112] is observed when the Au catalyst nanoparticles at the apexes of the nanocones shrink below ≈100 nm. The natural formation of kinked nanoarchitectures at constant growth pressures is related to the size‐dependent free energy that changes for different orientations of the nanowires. The results suggest that the mechanism of forming such kinked nanocone–nanowire nanostructures in well‐controlled growth environment may be universal for a wide range of functional materials.
A Novel Photocathode Material for Sunlight‐Driven Overall Water Splitting: Solid Solution of ZnSe and Cu(In,Ga)Se2
Authors: Kaneko Hiroyuki , Minegishi Tsutomu , Nakabayashi Mamiko , Shibata Naoya , Kuang Yongbo , Yamada Taro , Domen Kazunari
Published: April 2016

Thin films of a solid solution of ZnSe and CuIn0.7Ga0.3Se2 ((ZnSe)
x
(CIGS)
1–x
) are prepared by co‐evaporation. Structural characterization reveals that the ZnSe and CIGS form a solid solution with no phase separation. (ZnSe)0.85(CIGS)0.15‐based photocathodes modified with Pt, Mo, Ti, and CdS exhibit a photocurrent of 7.1 mA cm−2 at 0 VRHE, and a relatively high onset potential of 0.89 VRHE under simulated sunlight. A two‐electrode cell containing a (ZnSe)0.85(CIGS)0.15 photocathode and a BiVO4‐based photoanode has an initial solar‐to‐hydrogen conversion efficiency of 0.91%, which is one of the highest values reported for a photoanode–photocathode combination. Thus, (ZnSe)0.85(CIGS)0.15 is a promising photocathode material for efficient photoelectrochemical water splitting.
A Chiral N,N′‐Dioxide–ZnII Complex Catalyzes the Enantioselective [2+2] Cycloaddition of Alkynones with Cyclic Enol Silyl Ethers
Authors: Kang Tengfei , Ge Shulin , Lin Lili , Lu Yan , Liu Xiaohua , Feng Xiaoming
Published: April 2016

A highly efficient enantioselective [2+2] cycloaddition between alkynones and cyclic enol silyl ethers was developed by using a chiral N,N′‐dioxide‐zinc(II) complex as a catalyst. This method functions well for a variety of terminal alkynes as well as cyclic enol silyl ethers, with good to excellent enantioselectivity (up to 97 % ee). This is also the first successful example for the catalytic enantioselective [2+2] cycloaddition of internal alkynes with cyclic enol silyl ethers to give fully substituted cyclobutenes. Meanwhile, the desired cyclobutene product can easily be transformed into fused cyclobutane derivatives.
From Complex Natural Products to Simple Synthetic Mimetics by Computational De Novo Design
Authors: Friedrich Lukas , Rodrigues Tiago , Neuhaus Claudia S. , Schneider Petra , Schneider Gisbert
Published: April 2016

We present the computational de novo design of synthetically accessible chemical entities that mimic the complex sesquiterpene natural product (−)‐Englerin A. We synthesized lead‐like probes from commercially available building blocks and profiled them for activity against a computationally predicted panel of macromolecular targets. Both the design template (−)‐Englerin A and its low‐molecular weight mimetics presented nanomolar binding affinities and antagonized the transient receptor potential calcium channel TRPM8 in a cell‐based assay, without showing target promiscuity or frequent‐hitter properties. This proof‐of‐concept study outlines an expeditious solution to obtaining natural‐product‐inspired chemical matter with desirable properties.
Histology of the Skin of Three Limbless Squamates Dwelling in Mesic and Arid Environments
Authors: Allam Ahmed A. , Daza Juan D. , Abo‐Eleneen Rasha E.
Published: April 2016

The skin of limbless squamates has an increased contact with the substrate compared with limbed counterparts. Comparatively, the contact with the substrate is intensified in fossorial species, where the whole circumference of the body interacts with the soil during underground locomotion. Although fossoriality in Squamata, specifically lizards and snakes, has been studied ecologically and morphologically (e.g., osteological changes), not enough detail is yet available regarding changes in organs critical for underground lifestyle such as the skin. Here we used histological and microscopical techniques (scanning electron microscopy and transmission electron microscopy) to uncover the structural detail of the epidermis and dermis in three limbless reptiles, the amphisbaenian Diplometopon zarudnyi, and two snakes, Indotyphlops braminus (Typhlopidae) and Cerastes cerastes (Viperidae). The skin of these taxa shows pronounced morphological diversity, which is likely associated to different environmental and functional demands upon these reptiles. Anat Rec, 299:979–989, 2016. © 2016 Wiley Periodicals, Inc.
MOLECULAR CLONING, EXPRESSION PATTERN OF MULTIDRUG RESISTANCE ASSOCIATED PROTEIN 1 (MRP1, ABCC1) GENE, AND THE SYNERGISTIC EFFECTS OF VERAPAMIL ON TOXICITY OF TWO INSECTICIDES IN THE BIRD CHERRY‐OAT APHID
Authors: Kang Xin‐Le , Zhang Meng , Wang Kang , Qiao Xian‐Feng , Chen Mao‐Hua
Published: April 2016

The ATP‐binding cassette (ABC) transporters are important transmembrane proteins encoded by a supergene family. The majority of ABC proteins are primary active transporters that bind and hydrolyze ATP to mediate the efflux of a diverse range of substrates across lipid membranes. In this study, we cloned and characterized a putative multidrug resistance associated protein 1 (MRP1) from Rhopalosiphum padi encoded by ABCC1. Structural analysis showed that this protein has structural features typical of the ABC transporter family. Phylogenetic analysis indicated that the amino acid sequence was highly similar that of the corresponding protein from Acyrthosiphon pisum. Real‐time quantitative polymerase chain reaction (PCR) analysis showed that ABCC1 was expressed throughout all R. padi developmental stages, with the highest level of expression in the fourth larval instar. We also examined ABCC1 expression in four different tissue types and found that it was most highly expressed in the midgut. Exposing R. padi to imidacloprid and chlorpyrifos increased ABCC1 expression. Furthermore, ABCC1 expression was higher in the imidacloprid‐resistant (IR) and chlorpyrifos‐resistant (CR) strains than in an insecticide‐susceptible strain (SS) of R. padi. Exposing R. padi to verapamil in combination with insecticides significantly increased the toxicity of the insecticides. The respective synergy factor of CR and IR R. padi strain was 1.33 and 1.26, which was lower than that (2.72 and 1.64, respectively) of the SS. Our results clarify the biological function of ABCC1 in R. padi, particularly its role in insecticide resistance, and suggest novel strategies for pest management that use ABC transporter inhibitors to increase the effectiveness of insecticides.
Brief Report: Estimating Disease Activity Using Multi‐Biomarker Disease Activity Scores in Rheumatoid Arthritis Patients Treated With Abatacept or Adalimumab
Authors: Fleischmann Roy , Connolly Sean E. , Maldonado Michael A. , Schiff Michael
Published: April 2016

Objective

To assess the ability of a multi‐biomarker disease activity (MBDA) test (Vectra DA) to reflect clinical measures of disease activity in patients enrolled in the AMPLE (Abatacept Versus Adalimumab Comparison in Biologic‐Naive RA Subjects with Background Methotrexate) trial.

Methods

In the AMPLE trial, patients with active rheumatoid arthritis (RA) who were naive to biologic agents and had an inadequate response to methotrexate were randomized (1:1) to receive subcutaneous abatacept (125 mg every week) or subcutaneous adalimumab (40 mg every 2 weeks), with background methotrexate, for 2 years. The MBDA score was determined using serum samples collected at baseline, month 3, and years 1 and 2. The adjusted mean change from baseline in the MBDA score was compared between the abatacept and adalimumab treatment groups. Cross‐tabulation was used to compare the MBDA score with the following clinical measures of disease activity: Clinical Disease Activity Index (CDAI), Simplified Disease Activity Index (SDAI), Disease Activity Score in 28 joints using the C‐reactive protein level (DAS28‐CRP), and Routine Assessment of Patient Index Data 3 (RAPID‐3).

Results

In total, 318 patients were randomized to receive abatacept, and 328 were randomized to receive adalimumab; MBDA data were available for 259 and 265 patients, respectively. No association between the MBDA score and disease activity defined by the CDAI, SDAI, DAS28‐CRP, or RAPID‐3 in the abatacept and adalimumab treatment groups was observed.

Conclusion

The MBDA score did not reflect clinical disease activity in patients enrolled in AMPLE and should not be used to guide decision‐making in the management of RA, particularly for patients who receive abatacept or adalimumab as the first biologic agent.
Association Between Serum Antibodies to Periodontal Bacteria and Rheumatoid Factor in the Third National Health and Nutrition Examination Survey
Authors: Goh Charlene E. , Kopp Jacob , Papapanou Panos N. , Molitor Jerry A. , Demmer Ryan T.
Published: April 2016

Objective

Alterations in the microbiome, including the periodontal microbiome, may be a risk factor for rheumatoid arthritis (RA). Most studies that have analyzed this association are relatively small, focus primarily on a single periodontal pathogen (Porphyromonas gingivalis), and are not population based. This study was undertaken to investigate the association between elevated serum levels of IgG antibodies to 19 periodontal species and the prevalence of rheumatoid factor (RF) in a large nationally representative sample of adults.

Methods

The Third National Health and Nutrition Examination Survey (NHANES‐III) is a cross‐sectional sample of the noninstitutionalized US population (n = 33,994). Our study population included all dentate participants who were 60 years and older, did not have RA as defined by a modified version of the American College of Rheumatology 1987 criteria, and had complete data for both serum IgG antibodies against periodontal bacteria and serum RF antibody titer (n = 2,461).

Results

Adjusted odds ratios (ORs) and 95% confidence intervals (95% CIs) summarizing the relationship between the 19 periodontal serum IgG antibodies and RF seropositivity ranged from 0.53 (95% CI 0.29–0.97) to 1.27 (95% CI 0.79–2.06), and 17 of the 19 observed ORs were <1.0. The ORs for RF seropositivity among participants with elevated Prevotella intermedia (0.53 [95% CI 0.29–0.97]) and Capnocytophaga ochracea (0.54 [0.31–0.95]) IgG levels were statistically significant.

Conclusion

Our findings indicate that elevated levels of IgG antibodies to periodontal bacteria are mostly unassociated with RF seropositivity in the nationally representative NHANES‐III. Elevated levels of antibodies to P intermedia and C ochracea are associated with lower odds of RF seropositivity.
Induction of Scleroderma Fibrosis in Skin‐Humanized Mice by Administration of Anti−Platelet‐Derived Growth Factor Receptor Agonistic Autoantibodies
Authors: Luchetti Michele M. , Moroncini Gianluca , Jose Escamez Maria , Svegliati Baroni Silvia , Spadoni Tatiana , Grieco Antonella , Paolini Chiara , Funaro Ada , Avvedimento Enrico V. , Larcher Fernando , Del Rio Marcela , Gabrielli Armando
Published: April 2016

Objective

To describe a skin–SCID mouse chimeric model of systemic sclerosis (SSc; scleroderma) fibrosis based on engraftment of ex vivo–bioengineered skin using skin cells derived either from scleroderma patients or from healthy donors.

Methods

Three‐dimensional bioengineered skin containing human keratinocytes and fibroblasts isolated from skin biopsy specimens from healthy donors or SSc patients was generated ex vivo and then grafted onto the backs of SCID mice. The features of the skin grafts were analyzed by immunohistochemistry, and the functional profile of the graft fibroblasts was defined before and after treatment with IgG from healthy controls or SSc patients. Two procedures were used to investigate the involvement of platelet‐derived growth factor receptor (PDGFR): 1) nilotinib, a tyrosine kinase inhibitor, was administered to mice before injection of IgG from SSc patient sera (SSc IgG) into the grafts, and 2) human anti‐PDGFR monoclonal antibodies were injected into the grafts.

Results

Depending on the type of bioengineered skin grafted, the regenerated human skin exhibited either the typical scleroderma phenotype or the healthy human skin architecture. Treatment of animals carrying healthy donor skin grafts with SSc IgG resulted in the appearance of a bona fide scleroderma phenotype, as confirmed by increased collagen deposition and fibroblast activation markers. Results of the experiments involving administration of nilotinib or monoclonal antibodies confirmed the involvement of PDGFR.

Conclusion

Our results provide the first in vivo demonstration of the fibrotic properties of anti‐PDGFR agonistic antibodies. This bioengineered skin–humanized mouse model can be used to test in vivo the progression of the disease and to monitor response to antifibrotic drugs.
ChemInform Abstract: GALLIUM‐69, GALLIUM‐71 AND INDIUM‐115 NMR STUDIES OF GROUP 3 TETRAHALOMETALLATE(III) ANIONS
Authors: COLTON R. , DAKTERNIEKS D. , HAUENSTEIN J.
Published: April 2016

Aus den NMR‐Spektren der Anionen MX; (M: Ga, In; X: Cl, Br, I) in CH2Cl2 ergibt sich, daß Mischungen von 2 Halogenidionen bei beiden Elementen zu gemischten Halogenospezies in statistischer Verteilung führen.
ChemInform Abstract: INFLUENCE OF THE REACTIVITY OF REDUCING AGENTS ON ANODIC PHOTOCURRENTS AT TITANIUM DIOXIDE ELECTRODES
Authors: KOBAYASHI T. , YONEYAMA H. , TAMURA H.
Published: April 2016

Der anodische Photostrom an TiO2 ‐Elektroden wird durch stark reaktive reduzierende Agenzien wie Fe(CN)64‐, I‐ oder Br‐ im Elektrolyten (0.5 M K2SO4) verstärkt und sein Einsatzpotential negativ verschoben.
ChemInform Abstract: THE BAND STRUCTURES AND MAGNETIC PROPERTIES OF SOME TRANSITION METAL MONOPHOSPHIDES. I. SCANDIUM PHOSPHIDE
Authors: PERKINS P. G. , MARWAHA A. K. , STEWART J. J. P.
Published: April 2016

Ein verbessertes Verfahren zur Berechnung der Bandstrukturen und Zustandsdichten von dreidimensionalen Festkörpern auf der Grundlage einer LCAO‐TB‐Methode wird auf ScP angewendet und führt zu dem Ergebnis, daß ScP ein.
ChemInform Abstract: MASSENSPEKTROMETRISCHE BESTIMMUNG DER IONISATIONSPOTENTIALE EINIGER OLIGOAROMATEN NACH VERSCHIEDENEN AUSWERTEMETHODEN
Authors: BECKEWITZ F. , HEUSINGER H.
Published: April 2016

Es werden massenspektrometrisch erfaßte Ionenausbeutekurven nach 3 verschiedenen bekannten Methoden und einer neuen Variante ausgewertet.
ChemInform Abstract: OPTICALLY ACTIVE SPIRANES. PART 11. SYNTHESES OF OPTICALLY ACTIVE MONO‐ TO HEPTA‐SUBSTITUTED 5‐METHYL‐ AND 5‐ETHYL‐2,2′‐SPIROBIINDANES AND RELATED NAPHTHALENE DERIVATIVES OF KNOWN CHIRALITY AND ENANTIOMERIC PURITY
Authors: NEUDECK H. , SCHLOEGL K. +
Published: April 2016

Zur Überprüfung des Näherungsansatzes für Chiralitätsfunktionen werden ausgehend von den Spirobiindanen (I) zahlreiche Derivate wie (IIa), (IIb) [durch Veresterung von (IIa)], (IIc) [durch Hydrierung von (IIb)], (IId) [durch Verseifung von (IIc)], (IIIa), (IIIb) [durch Hydrierung von (IIIa)], (IIIc) [durch Reduktion von (IIIb)], (IIId) [durch Dehydratisierung von (IIIc)], (IIIe) [durch Dehydrierung von (IIId)], ferner z.B. (IV)‐(IX) (ähnliche Reaktionen sowie entsprechende Folgereaktionen) synthetisiert, deren spezifische Drehwerte ermittelt werden (Tabellen).
ChemInform Abstract: PHOTOCHEMICAL REACTIONS. PART 121. PHOTOCHEMISTRY OF ε,ζ‐METHANO‐α,Γ‐DIENONES AND 7,8‐METHANO‐1,3,5‐TRIENES
Authors: ISHII K. , FREI B. , WOLF H. R. , JEGER O.
Published: April 2016

Photolysen der Titelverbindungen (Ia) bzw. (Ib) (Triplett‐ bzw. Singulett‐Anregung) liefern die angegebenen Produkte (II)‐(VII) (kurze Diskussion der Bildungsmechanismen).
ChemInform Abstract: THE HYDROFORMYLATION REACTION: CATALYSIS BY PLATINUM(II)‐TIN(II) SYSTEMS
Authors: CLARK H. C. , DAVIES J. A.
Published: April 2016

Die Hydroformylierung von 1‐Hexen (I) wird durch Zinnchlorid (IV) und die Platin‐Komplexe (V) katalysiert, wobei die Ausbeute an n‐Heptanal (VI) durch systematische Variation der Parameter Katalysator, Druck und Temperatur optimiert wird.
ChemInform Abstract: SYNTHESIS OF DIASTEREO‐ AND ENANTIOSELECTIVELY DEUTERATED β,ε‐,β,β‐,β,Γ‐ AND Γ,Γ‐CAROTENES
Authors: MAERKI H. P. + , EUGSTER C. H.
Published: April 2016

Die Synthese der deuterierten Carotine (XIIa), (XIIb), (XIIIa) und (XIIIb) ausgehend vom deuterierten Dehydroabietan (Ie) [erhältlich aus der (+)‐Dehydroabietinsäure (Ia) über die Stufen (Ib)‐(Id)] werden beschrieben.
ChemInform Abstract: PREPARATION OF α,β,Γ,Δ‐UNSATURATED SECONDARY ALCOHOLS
Authors: STREINZ L. , ROMANUK M.
Published: April 2016

Die ungesättigten Ketone (I) werden mit dem Anion des Acetonitrils zu den entsprechenden ungesättigten Hydroxynitrilen umgesetzt, die mit EtMgBr im Überschuß über das oz,ß,′y,ö‐ungesättigte Nitril zu den konjugiert‐ungesättigten Ketonen (II) reagieren.
ChemInform Abstract: ELECTROPHILIC ADDITION TO ALLENIC DERIVATIVES: REGIOSELECTIVE SYNTHESIS OF TERTIARY AND PRIMARY ISOMERIC ALLYLIC ETHERS WITH IODINE IN THE VINYLIC α‐POSITION
Authors: GEORGOULIS C. , SMADJA W. , VALERY J. M.
Published: April 2016

Die Allene (I) reagieren mit Quecksilber(II)‐acetat (II) und Iod (III) in Gegenwart von Wasser bzw. Alkoholen (IV) in 60 ‐ 87%iger Ausbeute zu einem Gemisch der Iodide (V) und (VI), in welchem der Anteil von (V) 40 ‐ 95% beträgt.
ChemInform Abstract: SYNTHESIS OF DIHYDRO DIOLS AS POTENTIAL PROXIMATE CARCINOGENS OF BENZOFLUORANTHENES. A STUDY OF CHEMICAL CARCINOGENESIS. PART 22.
Authors: AMIN S. , BEDENKO V. , LA VOIE E. , HECHT S. S. , HOFFMANN D.
Published: April 2016

Ausgehend von der Tatsache, daß Dihydrodiolderivate von Pyren und Benzanthracen cancerogen wirksame Metaboliten der entsprechenden anellierten Kohlenwasserstoffe sind, werden in der vorliegenden Arbeit solche Derivate (II), (III) und (IV) von entsprechenden Benzofluoranthenen hergestellt.
ChemInform Abstract: TRANSFORMATIONS OF α,α‐DIFLUOROCARBONYL COMPOUNDS. 5. REACTION OF F PERFLUORO‐2‐HEXANONE WITH PHENYLHYDRAZINE
Authors: PLETNEV S. I. , BARGAMOVA M. D. , KNUNYANTS I. L.
Published: April 2016

Perfluor‐2‐hexanon (I) reagiert mit Phenylhydrazin (II) in Trifluoressgisäure über die im Formelschema angegebenen Zwischenstufen (III)‐(V) zum Pyrazolderivat (VI).
ChemInform Abstract: SYNTHESIS OF ETHYL 3‐METHYL‐7‐OXO‐4‐OXA‐1‐AZABICYCLO(3.2.0)HEPT‐2‐ENE‐2‐CARBOXYLATE AND THE REACTION OF 4‐ACETOXYAZETIDIN‐2‐ONE WITH ETHYL α‐DIAZOACETOACETATE
Authors: BROOKS G. , HOWARTH T. T. , HUNT E.
Published: April 2016

Das Methylthio‐azetidinon (I) ergibt auf dem im Formelschema beschriebenen Weg über den Ester (II) das Enol (III), das zur im Titel genannten Verbindung (IV) cyclisiert wird.
ChemInform Abstract: THE NON‐TEMPLATE SYNTHESIS OF DINUCLEATING MACROCYCLIC SCHIFF BASES DERIVED FROM THIOPHEN, AND THEIR DI‐SILVER COMPLEXES; X‐RAY CRYSTAL STRUCTURES OF TWO OF THE PRODUCTS
Authors: BAILEY N. A. , EDDY M. M. , FENTON D. E. , JONES G. , MOSS S. , MUKHOPADHYAY A.
Published: April 2016

Thiophen‐2,5‐dialdehyd (I) und die a,w‐Diamino‐ether (II) cyclisieren zu den Makrocyclen (III), die mit Silberionen zu den Disilberkomplexen (IV) bzw. (V) reagieren.
ChemInform Abstract: A NEW SYNTHESIS OF ALLYLSILANES
Authors: FLEMING I. , MARCHI D. JUN.
Published: April 2016

Die aus den Cycloalkanonen (I) zugänglichen Allylacetate (II) lassen sich in die Allylsilane (III) umwandeln.
ChemInform Abstract: THE REACTIONS OF Δ3‐PHOSPHOLENES WITH SULFENATE ESTERS AND SULFENAMIDES
Authors: HAMMOND P. J. , LLOYD J. R. , HALL C. D.
Published: April 2016

Die Umsetzung der Phospholene (I) mit den Sulfensäurederivaten (II) und (IX) wird unter verschiedenen Reaktionsbedingungen untersucht.
ChemInform Abstract: REACTIONS OF (CO)5MNSI(CH3)3 WITH ORGANIC CARBONYL COMPOUNDS
Authors: JOHNSON D. L. , GLADYSZ J. A.
Published: April 2016

Die Reaktionen des Titelkomplexes (I) mit organischen Carbonylverbindungen werden hinsichtlich der Entwicklung neuer Metall‐Kohlenstoffbindungsbildungsreaktionen untersucht.
ChemInform Abstract: NOVEL REACTIONS OF METAL‐METAL BONDS. REACTIONS OF PD2(C6H5)2PCH2P(C6H5)2)2CL2 WITH ACETYLENES, OLEFINS, AND ISOTHIOCYANATES
Authors: LEE C.‐L. , HUNT C. T. , BALCH A. L.
Published: April 2016

Acetylene (II) reagieren mit den Pd‐ Komplexen (I) zu den Komplexen (III) mit A‐Gerüst‐Struktur, die mittels IR‐ sowie 1H‐ und 31P‐NMR‐Spektroskopie charakterisiert werden.
ChemInform Abstract: SYNTHESIS AND PHOTOCHROMIC PROPERTIES OF PERFLUOROALKYL AND TRIFLUOROMETHYLSULFONYL SUBSTITUTED INDOLINE SPIROCHROMENES
Authors: YAGUPOL'SKII L. M. , PASENOK S. V. , GAL'BERSHTAM M. A. , BOBYLEVA G. K. , POPOV V. I. , KONDRATENKO N. V.
Published: April 2016

Durch Kondensation der Salicylaldehyde (III) bzw. (V) mit der Indol‐Base (VI) werden Heptafluorpropyl‐ und Trifluormethylsulfonyl‐substituierte Indolo‐spirochromene (VII) hergestellt.
ChemInform Abstract: STRUCTURE DETERMINATION OF BROMINATED MORPHINAN‐6‐ONES BY CARBON‐13 NMR SPECTROSCOPY: A NOVEL CLOSURE OF THE OXYGEN BRIDGE USING 4‐ACETOXYMORPHINAN‐6‐ONES
Authors: BROSSI A. , HSU F.‐L. , RICE K. C. , ROZWADOWSKA M. D. , SCHMIDHAMMER H. , HUFFORD C. D. , CHIANG C. C. , KARLE I. L.
Published: April 2016

Bromie‐ rung des bekannten (aus Morphin erhältlichen) Hydroxymorphinanons (Ia) mit 1 mol Br2 /Essigsäure gibt das Bromketon (Ib) [Strukturbestimmung anhand der 13C‐NMR‐ Daten (Vergleich mit Modellverbindungen; Röntgenstrukturanalyse des Hydrobromids IE7 (P212121 ; Z=4)].
ChemInform Abstract: THE ENTHALPIES OF FORMATION OF LIQUID ANTIMONY PENTAFLUORIDE SOLID ANTIMONY SESQUISULFIDE AND THE HIGH‐TEMPERATURE THERMODYNAMIC FUNCTIONS OF SOLID AND LIQUID ANTIMONY SESQUISULFIDE
Authors: JOHNSON G. K. , PAPATHEODOROU G. N. , JOHNSON C. E.
Published: April 2016

Basierend auf kalorimetrischen Messungen der Verbrennungswärmen von Sb(C) und Sb2S3(C) in Fluor werden die Standardbildungsenthalpien von SbF5(1) und Sb2S3(c) zu AH%(298.15 K) = ‐1327 kJ mol‐1 bzw. ‐l4l.8 kJ mol" bestimmt.
ChemInform Abstract: STUDIES ON SOME ANTIMONY(III) COMPLEXES WITH TRIDENTATE SCHIFF BASE LIGANDS
Authors: DI BIANCA F. , BERTAZZI N. , ALONZO G. , RUISI G. , GIBB T. C.
Published: April 2016

Die Sb(III)‐Komplexe (I) werden durch 1:1‐molare Umsetzung von Sb‐trichlorid oder ‐trifluorid mit den Na‐Salzen der Schiffschen Basen aus Salicylaldehyd und o‐Amino(thio)phenol in Methanol unter N2 gebildet.
ChemInform Abstract: KINETIC STUDY OF THE REACTION OF OH WITH H2 AND D2 FROM 250 TO 1050 K
Authors: RAVISHANKARA A. R. , NICOVICH J. M. , THOMPSON R. L. , TULLY F. P.
Published: April 2016

Die absoluten Geschwindigkeitskonstanten für die Reaktionen A und B werden zwischen 250 und 1050 Kmit Hilfe der Blitzphotolyse‐Resonanzfluoreszenz‐Methode gemessen.
ChemInform Abstract: INVESTIGATION OF THE MIXED‐METAL SULFIDE (MN,FE)S2 BY ANALYTICAL ELECTRON MICROSCOPY AND MOESSBAUER SPECTROSCOPY
Authors: CHEETHAM A. K. , COLE A. J. , LONG G. J.
Published: April 2016

Mischkristalle des Titelsystems werden auf hydrothermalem Wege ausgehend von FeSO4 ·7 H2O, MnSO4·H2O und KSx dargestellt.
ChemInform Abstract: REACTION OF PENTAFLUOROPHENYLMAGNESIUM CHLORIDE WITH ESTERS OF DIBASIC ACIDS
Authors: SHADRINA L. P. , DORMIDONTOV YU. P.
Published: April 2016

Reaktionen des Dimethylmalonesters (I) mit Perchlorphenyl‐Mg‐halogeniden bei ‐30 bis ‐20°C liefern die Carbinolate (II); (IIa) geht schon bei Raumtemp. unter Acetaldehyd‐Eliminierung in (IV) über, sodaß eine Grignard‐Reaktion unter üblichen Bedingungen, d. h. in siedendem Diethylether, schließlich den Hydroxyester (V) liefert.
ChemInform Abstract: THE THERMAL REARRANGEMENTS OF 1,1,2,2,4,4‐HEXAFLUOROSPIROPENTANE AND PERFLUOROSPIROPENTANE
Authors: DOLBIER W. R. JUN. , SELLERS S. F. , SMART B. E.
Published: April 2016

Die Difluormethylen‐fluor‐cyclopropane (I) bzw. (IV) reagieren mit Difluorcarben (II) zu den Addukten (III) bzw. (V).
ChemInform Abstract: STRUCTURES OF CYTOCHALASIN K, L, AND M, ISOLATED FROM CHALARA MICROSPORA
Authors: FEX T.
Published: April 2016

Als toxische Metaboliten aus Chalera microspora werden die Cytochalasine K (I), L (II) und M (III) isoliert und ihre Strukturen bestimmt.
ChemInform Abstract: NEW ANTIARRHYTHMIC AGENTS. 6. QUANTITATIVE STRUCTURE‐ACTIVITY RELATIONSHIPS OF AMINOXYLIDIDES
Authors: TENTHOREY P. A. , BLOCK A. J. , RONFELD R. A. , MCMASTER P. D. , BYRNES E. W.
Published: April 2016

Ausgehend vom 2,6‐Dimethylanilin (II) werden nach bekannten Verfahren die Verbindungen (I) und (III) mit variablem Abstand zwischen Aminound Amid‐Funktion hergestellt und auf antiarrh thmische Aktivität sowie ZNS‐Toxizität untersucht.
ChemInform Abstract: N‐ARALKYL SUBSTITUTION OF 2‐AMINO‐5,6‐ AND ‐6,7‐DIHYDROXY‐1,2,3,4‐TETRAHYDRONAPHTHALENES. 1. CARDIAC AND PRESSOR/DEPRESSOR ACTIVITIES
Authors: GORCZYNSKI R. J. , ANDERSON W. G. , STOUT D. M.
Published: April 2016

Die beiden Dopaminanalogen Aminodihydroxytetrahydronaphthaline (I) und (IV) werden durch reduktive Aminierung in die entsprechenden substituierten Derivate (IIIa) bzw. (Va) übergeführt.
ChemInform Abstract: DEAMINATION OF PRIMARY AMINOALKANOL. FORMATION OF SUBSTITUTED N‐NITROSO‐1,3‐OXAZOLIDINES AND N‐NITROSO‐1,3‐TETRAHYDROOXAZINES
Authors: SAAVEDRA J. E.
Published: April 2016

Bei des Desaminierung von Ethanolamin (I) mit salpetriger Säure erfolgt neben der erwarteten Desaminierung zu Glykol eine Oxidation zum Acetaldehyd (II), der mit weiterem Ethanolamin zum carcinogenen N‐Nitroso‐oxazolidin (III) cyclisiert.
ChemInform Abstract: 2,4‐BIS(DIALKYLAMINO)‐5‐ETHYLIDENE‐4,5‐DIHYDRO‐1,3‐THIAZOLE AND 2,4‐BIS(DIMETHYLAMINO)‐5‐VINYL‐1,3‐THIAZOLE
Authors: GOMPPER R. , SCHELBLE J.
Published: April 2016

Die Thioharnstoff‐Derivate (I) werden mit Allylbromid (II) in die Azavinamidinium‐salze (III) übergeführt, die mit Basen das Vinyl‐thiazol (VI) bzw. die Ethyliden‐dihydrothiazole (IV), die zu den Thiazolen (V) umgelagert werden können, ergeben.
ChemInform Abstract: PHASE‐TRANSFER CATALYZED N‐ALKYLATION OF 3(2H)‐PYRIDAZINONES (3‐OXO‐2,3‐DIHYDROPYRIDAZINES)
Authors: YAMADA T. , OHKI M.
Published: April 2016

Die Pyridazinone (I) lassen sich unter den Bedingungen der Phasentransfer‐Katalyse (PTC) glatt zu (III) alkylieren.
ChemInform Abstract: N‐SUBSTITUTED PORPHYRIN FORMATION FROM CARBENE IRON‐PORPHYRIN COMPLEXES : A POSSIBLE PATHWAY FOR CYTOCHROME P450 HEME DESTRUCTION
Authors: LANGE M. , MANSUY D.
Published: April 2016

Der Eisen(II)‐Porphyrin‐ Komplex (I) wird mit den 2,2‐Diaryl‐l ,1 ,l‐trichlor‐ethylverbindungen (II) unter Bildung des Carben‐Anlagerungskomplexes (III) umgesetzt, aus dem der Komplex (IV) durch Einelektronen‐Oxidation erhalten wird, der zu den Eisen‐freien Verbindungen (V) bzw. (VI) reagiert.
ChemInform Abstract: ACYLOXYALKYLIDENEPHOSPHORANES. I. STUDY OF Ω‐ACYLOXY‐N‐PROPYLIDENETRIPHENYLPHOSPHORANES. SYNTHESIS OF 2,3‐DIHYDROFURANS
Authors: HERCOUET A. , LE CORRE M.
Published: April 2016

Die Ylide (IV) cyclisieren sich in tert.‐Butanol zu den Cyclopropylketonen (V), im aprotischen Lösungsmittel dagegen zu den Dihydrofuranen (VII).
ChemInform Abstract: REACTIONS OF POLYSUBSTITUTED AROMATIC COMPOUNDS. 60. REACTION OF DIBENZYL SELENIDES WITH NITRIC ACID
Authors: SUZUKI H. , OHNISHI K.
Published: April 2016

Die Reaktion von kernsubstituierten Bis‐benzylseleniden (I) mit HNO3 liefert in Abhängigkeit von den Substituenten R1 bis R5 entweder Selenoxide (II) oder Benzylnitrate (III).
ChemInform Abstract: PHOTOLYTIC REARRANGEMENT OF GERMANIUM AZIDES. EVIDENCE FOR TRANSIENT GERMAIMINES
Authors: BACEIREDO A. , BERTRAND G. , MAZEROLLES P.
Published: April 2016

Triethylgermanium‐azid (I) wird photolytische in Benzol über eine Zwischenstufe (II) zu Polymeren (III) zersetzt.
ChemInform Abstract: NEIGHBORING GROUP PARTICIPATION AND REARRANGEMENT IN HYPOBROMOUS ACID ADDITION TO 10β‐VINYLCHOLESTANES
Authors: KOCOVSKY P. , TURECEK F.
Published: April 2016

Die Addition von HOBr an die Cholestanderivate (I) und (VIII) sowie Folgereaktionen der Additionsprodukte (II)‐(IV) bgw.
ChemInform Abstract: NEW SYNTHETIC ROUTE TO 3‐ACYL‐2‐OXO‐5α‐CHOLESTANES
Authors: BERBALK H. , EICHINGER K. , SCHUSTER R.
Published: April 2016

Sa‐Cholestan‐3‐on (I) wird mit den Acetylen‐Grignard‐Verbindungen (II) in die Alkohole (III) und (IV) übergeführt, die nach Dehydratisierung zu (V), Epoxidation zu (VI) und sauer katalysierter Umlagerung die 3‐Acyl‐cholestan‐2‐one (VII) liefern.
ChemInform Abstract: SYNTHETIC STUDIES ON CELL SURFACE GLYCANS. PART 4. RECONSTRUCTION OF GLYCAN CHAINS OF GLYCOPROTEIN. BRANCHING MANNOPENTAOSIDE AND MANNOHEXAOSIDE
Authors: OGAWA T. , SASAJIMA K.
Published: April 2016

Acetylierung des (bekannten) Mannopyranosids (Ia) [→(Ib)], nachfolgende Acetolyse [→(Ic)] und Behandlung von (Ic) mit HCl liefern das Chlorid (Ib).
ChemInform Abstract: SEMISYNTHETIC AMINOGLYCOSIDE ANTIBACTERIALS. PART 8. SYNTHESIS OF NOVEL PENTOPYRANOSYL AND PENTOFURANOSYL DERIVATIVES OF GENTAMINE C1 AND C1A
Authors: DAVIES D. H. , KUGELMAN M. , LEE P. , LUCE C. E. , MALLAMS A. K. , MORTON J. B. , SALUJA S. S. , WRIGHT J. J. , DETRE G. , TANABE M. , YASUDA D. M.
Published: April 2016

Die Darstellung der Titelverbindungen, z.B. (I)‐(IV), wird anhand von Glykosylierungs‐ und entsprechenden Folgereaktionen ausgehend vom Gentamin‐Cl‐ (VIIa) bzw. ‐C,a‐Derivat (VIIb) durchgeführt.
ChemInform Abstract: 2‐AZADIHYDROERGOTAMINE
Authors: STADLER P. A. , STUERMER E. + , WEBER H. P. , LOOSLI H.‐R.
Published: April 2016

NaIO4‐Oxidation des Dihydrolysergsäureesters (I) gibt die Produkte (IIa) und (IIb); beim Halten des Oxidationsgemisches in Sproz. methanolischer H250′, 3 h bei 20°C geht (IIa) in (IIb) über, womit die Ausb. des Aminoesters (IIb) optimiert wird.
ChemInform Abstract: TRANSMISSION ELECTRON MICROSCOPY OF LEAD ZIRCONATE TITANATE (PB(ZR0.52TI0.48)O3)
Authors: GOO E. K. W. , MISHRA R. K. , THOMAS G.
Published: April 2016

In der mit 3 Gew.‐% PbO‐ Überschuß gesinterten Titelkeramik wird eine amorphe Korngrenzenphase von l0 nm Dicke nachgewiesen.
ChemInform Abstract: PHASE RELATIONS IN THE SYSTEMS A2O‐METAL OXIDE‐TUNGSTEN TRIOXIDE (A=LITHIUM, SODIUM; METAL=IRON, CHROMIUM, TIN, ZIRCONIUM, THORIUM, VANADIUM)
Authors: SPINNLER G. E. , CHANG L. L. Y.
Published: April 2016

Von 12 in den Titelsystemen nachgewiesenen ternären Phasen haben die Phasen (I)‐(V) Strukturen vom Wolframit‐Typ.
ChemInform Abstract: THE BEHAVIOR OF SODIUM‐TITANIUM SULFIDES, NA‐TIS2 AND NA‐TIS3 AS SOLID SOLUTION ELECTRODES
Authors: ZANINI M. , SHAW J. L. , TENNENHOUSE G. J.
Published: April 2016

Untersuchungen des Verhaltens von TiS2‐ und TiS3‐Elektroden in einer Na‐Zelle bei Temp. zwischen 230 und 280°C unter Verwendung von β"‐Al2O3 als Festelektrolyt zeigen, daß TiSz in einer Na‐Zelle bei hohen Temp. als reversible Mischkristallelektrode verwendet werden kann, während die elektrochemische Reaktion von TiS3 mit Na zur Zers. führt.
ChemInform Abstract: TWO‐DIMENSIONAL ELECTROCRYSTALLISATION: THE CD(OH)2/CD(HG) SYSTEM
Authors: DA SILVA PEREIRA M. I. , PETER L. M.
Published: April 2016

Die Elektrokristallisation von CdOH an Cd‐Amalgam in 1 mol dm ′3 NaOH‐Lösung wird mit Hilfe von Potential‐ und Stromstörungen untersucht.
ChemInform Abstract: A.C. AND D.C. CYCLIC VOLTAMMETRY OF MANGANESE(II) AT MERCURY WITH APPLICATIONS TO ANODIC STRIPPING ANALYSIS
Authors: O'HALLORAN R. , BLUTSTEIN H.
Published: April 2016

Die Kinetik von Mn(II) an Hg wird anhand eines Vergleichs zwischen digitaler Simulierung und experimenteller cyclischer Wechsel‐ und Gleichstromvoltammetrie aufgeklärt.
ChemInform Abstract: DECOMPOSITION OF HYDROGEN PEROXIDE ON NICKEL OXIDE‐MOLYBDENUM TRIOXIDE TWO‐COMPONENT CATALYSTS AND EFFECT OF GAMMA RADIATION AND NEUTRONS ON THEM
Authors: MUCKA V.
Published: April 2016

Die im Zusammensetzungsbereich 0‐100 mol‐% einer der beiden Komponenten auf ihre katalytischen Eigenschaften hin untersuchten 2‐Komponenten‐Katalysatoren setzen sich aus den beiden Oxiden zusammen und enthalten im Bereich 18‐92 mol‐% MoO3 geringe Anteile an Ni‐molybdat, das jedoch die katalytische Aktivität kaum beeinflußt. Diese ändert sich, wie auch die spezifische Oberfläche des Katalysators nichtmonoton mit der Zusammensetzung und hat bei 15 mol‐% MoO3 ein Maximum.
ChemInform Abstract: HYDROGEN PEROXIDE DECOMPOSITION ON A NON‐IRRADIATED AND GAMMA PRE‐IRRADIATED NICKEL OXIDE‐URANIUM OXIDE (NIO‐U3O8) CATALYST
Authors: MUCKA V.
Published: April 2016

Einige physikalisch‐chemische Eigenschaften sowie insbesondere die katalytische Aktivität (Zers.
ChemInform Abstract: RADIOLYSIS OF WATER VAPOR AND A SURFACE‐CATALYZED ISOTOPE‐EXCHANGE REACTION
Authors: RICHTER H. W. , FIRESTONE R. F.
Published: April 2016

Die stationäre Radiolyse von D2O‐Dampf wird mit Protium, Perprotiopropan oder Mischungen von beiden als Radikalfänger, tritiiertem Wasser als interner Strahlungsquelle und Bestrahlungsgefäßen aus Glas untersucht.
ChemInform Abstract: THEORETICAL STUDY OF THE OLEFIN INSERTION STEP IN THE CHLOROTRIS(TRIPHENYLPHOSPHINE)RHODIUM(I)‐CATALYZED HYDROGENATION OF OLEFINS
Authors: DEDIEU A.
Published: April 2016

Unter Verwendung von LCAO‐ MO‐SCF‐Berechnungen wird die Wasserstoffübertragungsreaktion von (I) zu (II) untersucht.
ChemInform Abstract: ISOBENZOFURANS. III. PREPARATION AND TRAPPING OF 1‐ACETOXYISOBENZOFURAN. THE HE STRUCTURE OF A NOVEL PHTHALIDE FORMED IN THE ATTEMPTED GENERATION OF 1‐ACETOXYISOBENZOFURAN IN THE PRESENCE OF QUINONES
Authors: RUSSELL R. A. , MARSDEN D. E. , STERNS M. , WARRENER R. N.
Published: April 2016

Die Cycloaddition des Epoxydihydronaphthalins (I) an das Tetrazin (II) liefert in Gegenwart von N‐Methyl‐maleimid (NMI) das erwartete Addukt (IV).
ChemInform Abstract: SYNTHESIS OF SOME NEW TETRACYCLIC HETEROAROMATIC CHROMANS VIA QUINONE METHIDE INTERMEDIATES
Authors: CHAUHAN M. S. , MCKINNON D. M.
Published: April 2016

Die Uracile (Ia) und (Ib) reagieren mit dem Spirodimeren (II) zu den Chromanen (III).
ChemInform Abstract: REGIOSELECTIVITY OF RING CLOSURE REACTIONS TO 1,2,3‐THIADIAZOLES AND 1,2,3‐SELENADIAZOLES
Authors: ZIMMER O. , MEIER H.
Published: April 2016

Die Cycloaddition von SOCl2 an die Hydrazone (Ia) und (Ic) führt zu Gemischen der Thiadiazole (II) und (III), wobei das Isomerenverhältnis unabhängig ist von der Lage des sich rasch einstellenden Z/E‐Gleichgewichtes, auch wenn die ungünstigere E‐Form weit überwiegt.
ChemInform Abstract: SELECTIVE OXIDATION OF OLEANANE TRITERPENOIDS
Authors: KOBAYASHI Y. , OGAWA M. , OGIHARA Y.
Published: April 2016

Aus den angegebenen Komponenten wird ein Reagenz A (I) erhalten (genaue Zusammensetzung nicht bekannt), das zur selektiven Oxidation von Allylalkoholen, Allylethern und axialen 16‐ bzw. 21‐ Hydroxygruppen sehr geeignet ist.
ChemInform Abstract: IMPROVED PREPARATION OF METHYL 3‐CHLORO‐2‐BUTENOATE; PRECURSOR OF THE WICHTERLE ANNULATION REAGENT, 1,3‐DICHLORO‐2‐BUTENE
Authors: CONROW R. E. , MARSHALL J. A.
Published: April 2016

Das bei der Chlorierung von Acetessigester (I) mit PCl5 erhaltene Gemisch der Chlorierungsprodukte (II) und (III) kann direkt mit Triethylamin zur ausschließlichen Gewinnung von (III) weiterbehan‐ delt werden.
ChemInform Abstract: REACTION OF CHLOROALLYLLITHIUM AND GEM‐CHLORO(METHYL)ALLYLLITHIUM WITH ESTERS: NEW METHOD FOR THE SYNTHESIS OF CHLORINATED ETHYLENIC KETONES AND ETHYLENI ACYLOINS
Authors: MAUZE B. , DOUCOURE A. , MIGINIAC L.
Published: April 2016

Die Aufarbeitung des Reaktionsproduktes aus der Umsetzung von (I) mit (II) führt nach Zugabe von 3N HCl zu den α‐chlorierten β‐Ethylenketonen (III).
ChemInform Abstract: CATALYTIC KETONIZATION OF BUTANOL AND BUTYLACETATE
Authors: AIZBALTS V. S. , ABOTS A. A.
Published: April 2016

Die Gasphasenketonisierung ° von Butanol und Butylacetat in Gegenwart von Wasser wird an einem Zink‐Chrom‐ Mangan‐Katalysator untersucht.
ChemInform Abstract: SYNTHESIS OF MONOACYLUREAS AND THEIR MIXTURES WHICH ARE POTENTIAL PROLONGED‐ACTION FERTILIZERS
Authors: KRAVCHENYA N. A. , BUROV V. I.
Published: April 2016

Prolonged Action Potential Fertilizers.
ChemInform Abstract: PROSTANOIDS. I. PREPARATION OF CYCLOPENTENE SYNTHONS FOR 11‐DEOXY PROSTAGLANDINS
Authors: TOLSTIKOV G. A. , MIFTAKHOV M. S. , VALEEV F. A.
Published: April 2016

Ausgehend vom Ketoester (I) bzw. dem daraus durch Telomerisierung mit Butadien und LiI‐Behandlung des Telomeren (II) gut zugänglichen Octadieny1cyclo‐ pentanon (III) werden die Zielverbindungen (X), (XII), (XVI) und (XIX) nach bekannten Methoden dargestellt.
ChemInform Abstract: BENZYL DERIVATIVES OF 3‐PHENOXYTOLUENE
Authors: CHAINTREAU A. , ADRIAN G. , COUTURIER D.
Published: April 2016

3‐Phenoxybenzylderivate, die in der Chemie der Pyrethroid‐Insekticide von Bedeutung sind, lassen sich jetzt in guten Ausbeuten darstellen.