bluuebunny/crossref_metadata_2025 huggingface dataset:
Freestanding Ag2S/CuS PVA films with improved dielectric properties for organic electronics
Authors: Aippunny Ann Mary K. , Shamsudeen Sajna M. , Valparambil Prakashan , Mathew Siby , Vishwambharan Unnikrishnan N.
Published: March 2016

The prime goal of this work is to synthesize free‐standing polyvinyl alcohol (PVA) films doped with Ag2S, CuS, Ag2S/CuS alloy, and Ag2S/CuS nanocomposites through the sol–gel route. The dependence of Ag2S content in the PVA nanocomposite films on both the real and imaginary parts of the complex permittivity and loss tangent values was examined. An enhanced dielectric constant was achieved with minimum dielectric loss due to the insulating silica layer. By changing the Ag2S content in Ag2S/CuS PVA films, the AC conductivity is improved with pure Ag2S nanoparticles exhibiting highest values of the order of 10−6−10−9 S/cm. The Cole–Cole parameters were calculated and the semicircles observed in the plots indicate a single relaxation process. The results suggest that these composite films are potential materials for embedded capacitor applications. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43568.
Evaluation of an online three‐dimensional interactive resource for undergraduate neuroanatomy education
Authors: Allen Lauren K. , Eagleson Roy , de Ribaupierre Sandrine
Published: March 2016

Neuroanatomy is one of the most challenging subjects in anatomy, and novice students often experience difficulty grasping the complex three‐dimensional (3D) spatial relationships. This study evaluated a 3D neuroanatomy e‐learning module, as well as the relationship between spatial abilities and students' knowledge in neuroanatomy. The study's cross‐over design divided the participants into two groups, each starting with tests for anatomy knowledge and spatial ability, followed by access to either the 3D online learning module or the gross anatomy laboratory. Participants completed a second knowledge test prior to accessing the other learning modality. Participants in both groups scored significantly higher on Quiz 1 than on the Pretest knowledge assessment (W = 47, P < 0.01; W = 30, P < 0.01). Students who initially accessed the 3D online resources scored significantly better on the Quiz 1 than students who accessed the gross anatomy resources (W = 397.5, P < 0.01). Scores significantly improved on Quiz 2 for participants who accessed the 3D learning module following exposure to the cadaveric resources (W = 94, P < 0.01). After exposure to both learning modalities, there were no significant differences between groups. Significant positive correlations were found between participants' spatial ability score and their performance on the Pretest, Quiz 1, and Quiz 2 assessments (r = 0.22, P = 0.04; r = 0.25, P = 0.02; r = 0.26, P = 0.02). These preliminary results found students appreciated working with the 3D e‐learning module, and their learning outcomes significantly improved after accessing the resource. Anat Sci Educ 9: 431–439. © 2016 American Association of Anatomists.
Improving Accuracy on Bayesian Inference Problems Using a Brief Tutorial
Authors: Talboy Alaina N. , Schneider Sandra L.
Published: March 2016

Research suggests that most people struggle when asked to interpret the outcomes of diagnostic tests such as those presented as Bayesian inference problems. To help people interpret these difficult problems, we created a brief tutorial, requiring less than 10 minutes, that guided participants through the creation of an aid (either graph or table) based on an example inference problem and then showed the correct way to calculate the positive predictive value of the problem (i.e., likelihood that positive tests correctly indicate presence of condition). Approximately 70% of those in each training condition found the correct response on at least one problem in the format for which they were trained. Just under 55% of those in the control condition (i.e., no training) were able to find the correct response on at least one table or graph problem. We demonstrated a relationship between numeracy and performance on both problem formats, although we did not find evidence for a relationship between graph literacy and performance for either problem format. Potential improvements to and applications of the tutorial are discussed. Copyright © 2016 John Wiley & Sons, Ltd.
Membrane‐mediated regulation of vascular identity
Authors: Hashimoto Takuya , Tsuneki Masayuki , Foster Trenton R. , Santana Jeans M. , Bai Hualong , Wang Mo , Hu Haidi , Hanisch Jesse J. , Dardik Alan
Published: March 2016

Vascular diseases span diverse pathology, but frequently arise from aberrant signaling attributed to specific membrane‐associated molecules, particularly the Eph‐ephrin family. Originally recognized as markers of embryonic vessel identity, Eph receptors and their membrane‐associated ligands, ephrins, are now known to have a range of vital functions in vascular physiology. Interactions of Ephs with ephrins at cell‐to‐cell interfaces promote a variety of cellular responses such as repulsion, adhesion, attraction, and migration, and frequently occur during organ development, including vessel formation. Elaborate coordination of Eph‐ and ephrin‐related signaling among different cell populations is required for proper formation of the embryonic vessel network. There is growing evidence supporting the idea that Eph and ephrin proteins also have postnatal interactions with a number of other membrane‐associated signal transduction pathways, coordinating translation of environmental signals into cells. This article provides an overview of membrane‐bound signaling mechanisms that define vascular identity in both the embryo and the adult, focusing on Eph‐ and ephrin‐related signaling. We also discuss the role and clinical significance of this signaling system in normal organ development, neoplasms, and vascular pathologies. Birth Defects Research (Part C) 108:65–84, 2016. © 2016 Wiley Periodicals, Inc.
Schwann‐like cells differentiated from human dental pulp stem cells combined with a pulsed electromagnetic field can improve peripheral nerve regeneration
Authors: Hei Wei‐Hong , Kim Soochan , Park Joo‐Cheol , Seo Young‐Kwon , Kim Soung‐Min , Jahng Jeong Won , Lee Jong‐Ho
Published: March 2016

The purpose of this study was to investigate the effect of Schwann‐like cells combined with pulsed electromagnetic field (PEMF) on peripheral nerve regeneration. Schwann‐like cells were derived from human dental pulp stem cells (hDPSCs) and verified with CD104, S100, glial fibrillary acidic protein (GFAP), laminin, and P75NTR immunocytochemistry. Gene expression of P75NTR and S100 were analyzed. Male Sprague‐Dawley rats (200‐250g, 6‐week‐old) were divided into seven groups (n = 10 each): control, sham, PEMF, hDPSCs, hDPSCs + PEMF, Schwann‐like cells, Schwann‐like cells + PEMF. Cells were transplanted (1 × 106/10µl/rat) at crush‐injury site or combined with PEMF (50 Hz, 1 h/day, 1 mT). Nerve regeneration was evaluated with functional test, histomorphometry and retrograde labelled neurons. Schwann‐like cells expressed CD104, S100, GFAP, laminin, and p75 neurotrophin receptor (P75NTR). P75NTR and S100 mRNA expression was highest in Schwann‐like cells + PEMF group, which also showed increased Difference and Gap scores. Axons and retrograde labeled neurons increased in all treatment groups. Schwann‐like cells, hDPSCs with or without PEMF, and PEMF only improved peripheral nerve regeneration. Schwann‐like cells + PEMF showed highest regeneration ability; PEMF has additive effect on hDPSCs, Schwann‐like cell in vitro and nerve regeneration ability after transplantation in vivo. Bioelectromagnetics. 37:163–174, 2016. © 2016 Wiley Periodicals, Inc.
Effects of exposure to gradient magnetic fields emitted by nuclear magnetic resonance devices on clonogenic potential and proliferation of human hematopoietic stem cells
Authors: Iachininoto Maria Grazia , Camisa Vincenzo , Leone Lucia , Pinto Rosanna , Lopresto Vanni , Merla Caterina , Giorda Ezio , Carsetti Rita , Zaffina Salvatore , Podda Maria Vittoria , Teofili Luciana , Grassi Claudio
Published: March 2016

This study investigates effects of gradient magnetic fields (GMFs) emitted by magnetic resonance imaging (MRI) devices on hematopoietic stem cells. Field measurements were performed to assess exposure to GMFs of staff working at 1.5 T and 3 T MRI units. Then an exposure system reproducing measured signals was realized to expose in vitro CD34+ cells to GMFs (1.5 T‐protocol and 3 T‐protocol). CD34+ cells were obtained by Fluorescence Activated Cell Sorting from six blood donors and three MRI‐exposed workers. Blood donor CD34+ cells were exposed in vitro for 72 h to 1.5 T or 3 T‐protocol and to sham procedure. Cells were then cultured and evaluated in colony forming unit (CFU)‐assay up to 4 weeks after exposure. Results showed that in vitro GMF exposure did not affect cell proliferation but instead induced expansion of erythroid and monocytes progenitors soon after exposure and for the subsequent 3 weeks. No decrease of other clonogenic cell output (i.e., CFU‐granulocyte/erythroid/macrophage/megakaryocyte and CFU‐granulocyte/macrophage) was noticed, nor exposed CD34+ cells underwent the premature exhaustion of their clonogenic potential compared to sham‐exposed controls. On the other hand, pilot experiments showed that CD34+ cells exposed in vivo to GMFs (i.e., samples from MRI workers) behaved in culture similarly to sham‐exposed CD34+ cells, suggesting that other cells and/or microenvironment factors might prevent GMF effects on hematopoietic stem cells in vivo. Accordingly, GMFs did not affect the clonogenic potential of umbilical cord blood CD34+ cells exposed in vitro together with the whole mononuclear cell fraction. Bioelectromagnetics. 37:201–211, 2016. © 2016 Wiley Periodicals, Inc.
RNA versatility governs tRNA function
Authors: Kuhn Claus‐D.
Published: March 2016

tRNAs undergo multiple conformational changes during the translation cycle that are required for tRNA translocation and proper communication between the ribosome and translation factors. Recent structural data on how destabilized tRNAs utilize the CCA‐adding enzyme to proofread themselves put a spotlight on tRNA flexibility beyond the translation cycle. In analogy to tRNA surveillance, this review finds that other processes also exploit versatile tRNA folding to achieve, amongst others, specific aminoacylation, translational regulation by riboswitches or a block of bacterial translation. tRNA flexibility is thereby not restricted to the hinges utilized during translation. In contrast, the flexibility of tRNA is distributed all over its L‐shape and is actively exploited by the tRNA‐interacting partners to discriminate one tRNA from another. Since the majority of tRNA modifications also modulate tRNA flexibility it seems that cells devote enormous resources to tightly sense and regulate tRNA structure. This is likely required for error‐free protein synthesis.
Comparison of batch and continuous multi‐column protein A capture processes by optimal design
Authors: Baur Daniel , Angarita Monica , Müller‐Späth Thomas , Steinebach Fabian , Morbidelli Massimo
Published: March 2016

Multi‐column capture processes show several advantages compared to batch capture. It is however not evident how many columns one should use exactly. To investigate this issue, twin‐column CaptureSMB, 3‐ and 4‐column periodic counter‐current chromatography (PCC) and single column batch capture are numerically optimized and compared in terms of process performance for capturing a monoclonal antibody using protein A chromatography. Optimization is carried out with respect to productivity and capacity utilization (amount of product loaded per cycle compared to the maximum amount possible), while keeping yield and purity constant. For a wide range of process parameters, all three multi‐column processes show similar maximum capacity utilization and performed significantly better than batch. When maximizing productivity, the CaptureSMB process shows optimal performance, except at high feed titers, where batch chromatography can reach higher productivity values than the multi‐column processes due to the complete decoupling of the loading and elution steps, albeit at a large cost in terms of capacity utilization. In terms of trade‐off, i.e. how much the capacity utilization decreases with increasing productivity, CaptureSMB is optimal for low and high feed titers, whereas the 3‐column process is optimal in an intermediate region. Using these findings, the most suitable process can be chosen for different production scenarios.
Preparation and Characterization of MCM‐41@PEI·Mn as a New Organic–Inorganic Hybrid Nanomaterial and Study of its Catalytic Role in the Oxidation of Cyclohexene, Ethyl Benzene, and Toluene in the Presence of H2O2 as an Oxidant
Authors: Tarasi Roghayeh , Ramazani Ali , Ghorbanloo Massomeh , Khoobi Mehdi , Aghahosseini Hamideh , Joo Sang Woo , Shafiee Abbas
Published: March 2016

The manganese‐containing mesoporous nanomaterial (MCM‐41@PEIMn) was synthesized and used as a catalyst for the oxidation of cyclohexene, ethyl benzene, and toluene. The mesoporous MCM‐41 was prepared via hydrothermal method and then polyethylenimine as a reactive surface modifier was grafted on its surface in the presence of ([3‐(2,3‐epoxypropoxy)propyl] trimethoxysilane) as a grafting agent. Manganese(ii) acetate was loaded onto the prepared MCM‐41@PEI. The MCM‐41, MCM‐41@PEI, and MCM‐41@PEI.Mn were characterized and elucidated by Fourier transform infrared, powder X‐ray diffraction, thermogravimetric, N2
adsorption–desorption, energy‐dispersive X‐ray spectroscopy, scanning electron microscopy, and transmission electron microscopy techniques. The catalytic activity and selectivity of the MCM‐41@PEI.Mn in the oxidation of cyclohexene, ethyl benzene, and toluene with 30% aqueous H2O2
as an oxidant were studied. Furthermore, the influences of various parameters such as temperature, oxidant amount, catalyst reusability, and kinds of solvents have been studied. The results showed that the manganese‐containing mesoporous nanomaterial was easily separated from the reaction mixture and reused at least five times without noticeable loss of activity.
Stability‐indicating chromatographic methods for determination of flecainide acetate in the presence of its degradation products; isolation and identification of two of its impurities
Authors: El‐Ragehy Nariman A. , Hassan Nagiba Y. , Tantawy Mahmoud A. , Abdelkawy Mohamed
Published: March 2016

In this work, two stability‐indicating chromatographic methods have been developed and validated for determination of flecainide acetate (an antiarrhythmic drug) in the presence of its degradation products (flecainide impurities; B and D). Flecainide acetate was subjected to a stress stability study including acid, alkali, oxidative, photolytic and thermal degradation. The suggested chromatographic methods included the use of thin layer chromatography (TLC‐densitometry) and high‐performance liquid chromatography (HPLC). The TLC method employed aluminum TLC plates precoated with silica gel G.F254 as the stationary phase and methanol–ethyl acetate–33% ammonia (3:7:0.3, by volume) as the mobile phase. The chromatograms were scanned at 290 nm and visualized in daylight by the aid of iodine vapor. The developed HPLC method used a RP‐C18 column with isocratic elution. Separation was achieved using a mobile phase composed of phosphate buffer pH 3.3–acetonitrile–triethylamine (53:47:0.03, by volume) at a flow rate of 1.0 mL/min and UV detection at 292 nm. Factors affecting the efficiency of HPLC method have been studied carefully to reach the optimum conditions for separation. The developed methods were validated according to the International Conference on Harmonization guidelines and were applied for bulk powder and dosage form. Copyright © 2016 John Wiley & Sons, Ltd.
Recombinant horseradish peroxidase variants for targeted cancer treatment
Authors: Bonifert Günther , Folkes Lisa , Gmeiner Christoph , Dachs Gabi , Spadiut Oliver
Published: March 2016

Cancer is a major cause of death. Common chemo‐ and radiation‐therapies damage healthy tissue and cause painful side effects. The enzyme horseradish peroxidase (HRP) has been shown to activate the plant hormone indole‐3‐acetic acid (IAA) to a powerful anticancer agent in in vitro studies, but gene directed enzyme prodrug therapy (GDEPT) studies showed ambivalent results. Thus, HRP/IAA in antibody directed enzyme prodrug therapy (ADEPT) was investigated as an alternative. However, this approach has not been intensively studied, since the enzyme preparation from plant describes an undefined mixture of isoenzymes with a heterogenic glycosylation pattern incompatible with the human system. Here, we describe the recombinant production of the two HRP isoenzymes C1A and A2A in a Pichia pastoris benchmark strain and a glyco‐engineered strain with a knockout of the α‐1,6‐mannosyltransferase (OCH1) responsible for hypermannosylation. We biochemically characterized the enzyme variants, tested them with IAA and applied them on cancer cells. In the absence of H2O2, HRP C1A turned out to be highly active with IAA, independent of its surface glycosylation. Subsequent in vitro cytotoxicity studies with human T24 bladder carcinoma and MDA‐MB‐231 breast carcinoma cells underlined the applicability of recombinant HRP C1A with reduced surface glycoslyation for targeted cancer treatment. Summarizing, this is the first study describing the successful use of recombinantly produced HRP for targeted cancer treatment. Our findings might pave the way for an increased use of the powerful isoenzyme HRP C1A in cancer research in the future.
Comparison of prognoses according to non‐positive and positive spectrin αII expression detected immunohistochemically in epithelial ovarian carcinoma: a retrospective study.
Authors: Maeda Osamu , Miyata‐Takata Tomoko , Shibata Kiyosumi , Kajiyama Hiroaki , Mizuno Mika , Tamakoshi Koji , Shimoyama Yoshie , Nakamura Shigeo , Kikkawa Fumitaka
Published: March 2016

Anticancer drug sensitivity affects prognosis in ovarian carcinoma. Previously, we purified spectrin αII and βII tetramers from cisplatin‐resistant ovarian serous adenocarcinoma cells and demonstrated that they contribute to platinum anticancer drug resistance. In this clinical study, we focused on the role of spectrin αII expression. It is our objective to demonstrate the potential of spectrin αII expression as a useful predictor of anticancer drug resistance and postoperative prognosis in epithelial ovarian carcinoma. Spectrin αII expression in the ovarian adenocarcinoma surgical specimens of 193 patients was examined by immunohistochemical staining. Staining strength was scored 3+, regarded as positive expression, and 2+, 1+, and 0, regarded as non‐positive expression. Prognoses obtained from clinical records were evaluated by statistical analysis. In the 193 cases studied, positive spectrin αII expression was associated with worse overall survival when compared with non‐positive expression (P < 0.001 by log‐rank test), and spectrin αII expression was identified as an independent predictive factor of overall survival (hazard ratio[HR]: 3.77, 95% confidence interval[CI]: 1.77–8.00; P < 0.001 by multivariate Cox's proportional hazards model). In the study about progression‐free survival, spectrin αII expression was not associated with prognoses. However, similar results as overall survival were obtained for survival after recurrence of the 92 recurrent cases (P = 0.0051 by log‐rank test, HR: 4.49, 95% CI: 2.06–9.79; P < 0.001 by multivariate Cox's proportional hazards model). In a detailed overall survival study of 66 serous adenocarcinoma patients and 127 nonserous adenocarcinoma patients, similar results were also obtained. Spectrin αII expression is a useful predictor of anticancer drug resistance and postoperative prognosis in epithelial ovarian carcinoma..
Synergistic effect of bioactive lipid and condition medium on cardiac differentiation of human mesenchymal stem cells from different tissues
Authors: Jiang Lili , Wang Yanwen , Pan Fang , Zhao Xiubo , Zhang Henggui , Lei Ming , Liu Tianqing , Lu Jian R.
Published: March 2016

Human umbilical cord mesenchymal stem cells (hUCMSCs) and human adipose tissue mesenchymal stem cells (hATMSCs) have the potential to differentiate into cardiomyocytes, making them promising therapeutic candidates for treating damaged cardiac tissues. Currently, however, the differentiated cells induced from hUCMSCs or hATMSCs can hardly display functional characteristics similar to cardiomyocytes. In this study, we have investigated the effects of bioactive lipid sphingosine‐1‐phosphate (S1P) on cardiac differentiations of hUCMSCs and hATMSCs in condition medium composed of cardiac myocytes culture medium or 5‐azacytidine. Cardiac differentiations were identified through immunofluorescence staining, and the results were observed with fluorescence microscopy and confocal microscopy. Synergistic effects of S1P and condition medium on cell viability were evaluated by MTT assays. Functional characteristics similar to cardiomyocytes were evaluated through detecting calcium transient. The differentiated hUCMSCs or hATMSCs in each group into cardiomyocytes showed positive expressions of cardiac specific proteins, including α‐actin, connexin‐43 and myosin heavy chain‐6 (MYH‐6). MTT assays showed that suitable differentiation time was 14 days and that the optimal concentration of S1P was 0.5 μM. Moreover, incorporation of S1P and cardiac myocytes culture medium gave rise to calcium transients, an important marker for displaying in vivo electrophysiological properties. This feature was not observed in the S1P‐5‐azacytidine group, indicating the possible lack of cellular stimuli such as transforming growth factor‐beta, TGF‐β. © 2016 The Authors. Cell Biochemistry and Function published by John Wiley & Sons, Ltd.
Rare case of live born with confirmed mosaic trisomy 17 and review of the literature
Authors: Baltensperger Austin , Haischer Gayle , Rohena Luis
Published: March 2016

Key Clinical Message

This article describes both previously reported as well as new phenotypic features in a trisomy 17 mosaic patient. The gold standard for postnatal diagnosis remains fibroblast analysis, though the level of mosaicism does not correlate with prognosis. A normal ultrasound in the setting of positive amniocentesis appears a reassuring indicator.
Nonlinear Wave‐Based Measurement Location Design and Online Estimation of a High‐Purity Heat‐Integrated Distillation Column
Authors: Cong Lin
Published: March 2016

A heat‐integrated distillation column (HIDiC) provides a great opportunity for energy conservation in distillation. The nonlinear wave theory offers an accurate and simplified description of the HIDiC. To utilize the wave model online, an estimator design is necessary since the wave model parameters cannot be measured directly. A method for selecting the location of the stage concentration measurements is proposed here to estimate the wave model parameters online. The first several measurement locations are selected based on a weighted principal component analysis (PCA) method, and the remaining measurements are decided on by a relative distribution index. Separation of a benzene‐toluene mixture is used to illustrate the performance of the selection and estimation. The simulation results show that the proposed method has a stronger adaptability than the method based on PCA.
Bioproduction of Floxuridine Using Nanostabilized Biocatalysts
Authors: Cappa Valeria A. , Rivero Cintia W. , Sambeth Jorge E. , Trelles Jorge A.
Published: March 2016

Bionanocomposites employing natural polysaccharides such as alginate and nanoclays, e.g., bentonite, are a promising alternative to developing stabilized biocatalysts used in the pharmaceutical industry due to their physicochemical properties, biocompatibility, and nontoxicity. Mechanical parameters such as swelling ratio, compressive strength, and fracture frequency were optimized, favoring scale‐up. Moreover, storage stability and reusability of the biocatalysts were improved by more than 90 % compared with control conditions. In addition, immobilized lactic acid bacteria were used in the bioprocess scale‐up to obtain floxuridine, showing a high productivity per gram of biocatalyst.
Reaction Mechanism and Regioselectivity of the Bingel–Hirsch Addition of Dimethyl Bromomalonate to La@C2v‐C82
Authors: Martínez Juan Pablo , Garcia‐Borràs Marc , Osuna Sílvia , Poater Jordi , Bickelhaupt F. Matthias , Solà Miquel
Published: March 2016

We quantum chemically explore the thermodynamics and kinetics of all 65 possible mechanistic pathways of the Bingel–Hirsch addition of dimethyl bromomalonate to the endohedral metallofullerene La@C2v‐C82 that result from the combination of 24 nonequivalent carbon atoms and 35 different bonds present in La@C2v‐C82 by using dispersion‐corrected DFT calculations. Experimentally, this reaction leads to four singly bonded derivatives and one fulleroid adduct. Of these five products, only the singly bonded derivative on C23 could be experimentally identified unambiguously. Our calculations show that La@C2v‐C82 is not particularly regioselective under Bingel–Hirsch conditions. From the obtained results, however, it is possible to make a tentative assignment of the products observed experimentally. We propose that the observed fulleroid adduct results from the attack at bond 19 and that the singly bonded derivatives correspond to the C2, C19, C21, and C23 initial attacks. However, other possibilities cannot be ruled out completely.
Conducting π Columns of Highly Symmetric Coronene, The Smallest Fragment of Graphene
Authors: Yoshida Yukihiro , Isomura Kazuhide , Kishida Hideo , Kumagai Yoshihide , Mizuno Motohiro , Sakata Masafumi , Koretsune Takashi , Nakano Yoshiaki , Yamochi Hideki , Maesato Mitsuhiko , Saito Gunzi
Published: March 2016

Coronene, which is the smallest D6h‐symmetric polycyclic aromatic hydrocarbon, attracts particular attention as a basic component of electronic materials because it is the smallest fragment of graphene. However, carrier generation by physical methods, such as photo‐ or electric field‐effect, has barely been studied, primarily because of the poor π‐conduction pathway in pristine coronene solid. In this work we have developed unprecedented π‐stacking columns of cationic coronene molecules by electrochemical hole‐doping with polyoxometallate dianions. The face‐to‐face π–π interactions as well as the partially charged state lead to electrical conductivity at room temperature of up to 3 S cm−1, which is more than 10 orders of magnitude higher than that of pristine coronene solid. Additionally, the robust π–π interactions strongly suppress the in‐plane rotation of the coronene molecules, which has allowed the first direct observation of the static Jahn–Teller distortion of cationic coronene molecules.
Ligand‐Promoted C(sp3)−H Olefination en Route to Multi‐functionalized Pyrazoles
Authors: Yang Weibo , Ye Shengqing , Schmidt Yvonne , Stamos Dean , Yu Jin‐Quan
Published: March 2016

A Pd‐catalyzed/N‐heterocycle‐directed C(sp3)−H olefination has been developed. The monoprotected amino acid ligand (MPAA) is found to significantly promote Pd‐catalyzed C(sp3)−H olefination for the first time. Cu(OAc)2 instead of Ag+ salts are used as the terminal oxidant. This reaction provides a useful method for the synthesis of alkylated pyrazoles.
ChemInform Abstract: ATTEMPT AT APPLICATION OF WEAK COUPLINGS APPROXIMATION IN DYNAMIC NUCLEAR MAGNETIC RESONANCE
Authors: GRYFF‐KELLER ADAM , SZYMANSKI SLAWOMIR
Published: March 2016

Die Anwendungsergebnisse der Näherung schwacher Kopplung in der dynamischen kernmagnetischen Resonanz werden theoretisch diskutiert.
ChemInform Abstract: ZUR THERMODYNAMIK IRREVERSIBLER PROZESSE IN GRENZFLAECHENSYSTEMEN
Authors: KEHLEN H. , BARANOWSKI B. , POPLIELAWSKI J.
Published: March 2016

Der Formalismus der Thermodynamik irreversibler Prozesse wird auf Grenzschichten angewendet, die sich auf inerter Unterlage befinden.
ChemInform Abstract: ZUR GLASBILDUNG IN DEN SYSTEMEN PHOSPHOR‐SELEN UND PHOSPHOR‐SCHWEFEL
Authors: HEYDER FRIEDRICH , LINKE DIETMAR
Published: March 2016

Durch Verschmelzen der Elemente in geschlossenen Quarzglasampullen bei 600°C wurden im System P‐Se Gläser im Bereich 0‐52 Atom‐% P erhalten.
ChemInform Abstract: DER EINFLUSS VON ZUSATZSTOFFEN AUF DIE KINETIK DER HYDRAZIN‐SYNTHESE
Authors: PASPALEEV E. , HOLLECK L.
Published: March 2016

Voltammetrisch wird die Kinetik der Hydrazinbildung bei der Synthese nach Raschig in verdünnten wäßrigen Lösungen bei Gegenwart von schwermetallbindenden Zusatzstoffen untersucht.
ChemInform Abstract: DURCH METALLOXIDE KATALYSIERTER WASSERSTOFF/DEUTERIUM‐AUSTAUSCH 1. MITT. AUSTAUSCHMECHANISMUS IM KONTAKT MIT ZINKOXID
Authors: RICHARD S. , GRAVELLE P. C. , TEICHNER S. J.
Published: March 2016

Eine Beziehung zwischen der Geschwindigkeitskonstante des H2/D2‐Austauschs an ZnO und dem Druck der Reaktionsmischung wird abgeleitet.
ChemInform Abstract: FERROELECTRIC EFFECT IN THE CATALYTIC REACTIONS OVER A BATIO3 SURFACE AT ITS CURIE POINT (120 DEGREES)
Authors: KAWAI TOMOJI , KUNIMOKI KIMIO , KONDOW TAMOTSU , ONISHI TAKAHARU , TAMARU KENZI
Published: March 2016

Die Aktivierungsenergien der katalytischen CO‐Oxidation und der N2O‐Reduktion durch CO an ferroelektrischem BaTiO3 ändern sich bei dessen Curie‐Temperatur, nicht jedoch die Aktivierungsenergie des H2/D2‐Austauschs.
ChemInform Abstract: POLAR ADDITIONS OF CHLORINE MONOFLUORIDE AND CHLORINE FLUOROSULFATE TO FLUORINATED ISOCYANATES
Authors: SPRENGER GEORGE H. , WRIGHT KENNETH J. , SHREEVE JEAN'NE M.
Published: March 2016

Durch Addition von Cl‐Fbzw.
ChemInform Abstract: STEREOPOPULATION CONTROL PART 5, FACILITATION OF INTRAMOLECULAR CONJUGATE ADDITION OF AN ALDEHYDE HYDRATE AND HEMIACETAL
Authors: BORCHARDT RONALD T. , COHEN LOUIS A.
Published: March 2016

Während die Oxidation des Chromanderivats (II) mit N‐Bromsuccinimid (NBS) in Wasser‐ bzw. Methanol‐Acetonitril das Chromanol (Ia) bzw. (Ib) liefert, entsteht bei der Oxidation mit Fe(III)‐chlorid in wäßriger Lösung der Chinonpropionaldehyd (III), der in wäßriger oder alkoholischer Lösung solvatisiert ist.
ChemInform Abstract: MICHAEL‐ADDITION VON 3‐OXOGLUTARSAEUREESTERN AN 7‐OXO‐7H‐BENZOCYCLOHEPTEN‐6,8‐DICARBONSAEUREESTER, SYNTHESE VON BENZANELLIERTEN OXA‐HOMOADAMANTANEN
Authors: FOEHLISCH BALDUR , DUKEK URSULA , GRAESSLE IRMELA , NOVOTNY BERND , SCHUPP EBERHARD , SCHWAIGER GUENTHER , WIDMANN ERIKA
Published: March 2016

Die Benzotropondicarbonsäureester (I) reagieren mit den Oxoglutarsäureestern (II) in Gegenwart katalytischer Mengen Diäthylamin unter doppelter Michael‐Addition zu den vollständig enolisierten 9,5‐Propeno‐benzo‐cycloheptentetracarbonsäureestern (III), die′ auch aus Phthaldialdehyd.
ChemInform Abstract: MICHAEL‐ADDITION CH‐ACIDER NITRILE AN 7‐OXO‐7H‐BENZOCYCLOHEPTEN‐6,8‐DICARBONSAEUREESTER, SYNTHESE VON 5,9‐METHANO‐ UND 5,9‐AETHANO‐8,9‐DIHYDRO‐5H‐BENZOCYCLOHEPTENEN
Authors: FOEHLISCH BALDUR , SCHUPP EBERHARD , DUKEK URSULA , GRAESSLE IRMELA
Published: March 2016

Bei der Umsetzung der Benzocycloheptendicarbonsäureester (I) mit den CH‐aciden Nitrilen (II) in Gegenwart katalytischer Mengen Diäthylamin bilden sich die 1:1‐Michael‐Addukte (III).
ChemInform Abstract: MICHAEL‐ADDITION CH‐ACIDER CARBONYL‐ UND NITROVERBINDUNGEN AN 7‐OXO‐7H‐BENZOCYCLOHEPTEN‐6,8‐DICARBONSAEUREESTER
Authors: FOEHLISCH BALDUR , SCHUPP EBERHARD , DUKEK URSULA , SCHWAIGER GUENTHER
Published: March 2016

Die Reaktion des Diesters (I) mit mindestens äquimolaren Mengen der Salze (II) in Na‐methylat bei 0°C verläuft unter Michael‐Addition zu den Na‐Enolaten (III), die beim Ansäuem zu den Enolen (IV) protoniert werden; (IV) sind gegenüber den Ausgangsprodukten metastabil und zerfallen, wie z.B. (IVb) oder (IVf), beim Erhitzen in Methanol unter Bildung von (I) [Retro‐Michael‐Addition].
ChemInform Abstract: ALTERNATIVE MODES OF ADDITION OF DIENOPHILES TO VINYLCYCLOPROPANE SYSTEMS
Authors: SAREL S. , FELZENSTEIN A. , YOVELL J.
Published: March 2016

Das Cyclopropan (I) reagiert mit Tetracyanäthylen (II), dem Phenyltriazolindion (IV), Acetylendicarbonsäuredimethylester (VI) und Maleinsäureanhydrid zu den Addukten (III), (V) und (VII) sowie dem Isomerisierungsprodukt (IX).
ChemInform Abstract: NUCLEOPHILIC CLEAVAGE OF QUADRICYCLENE‐2,3‐DICARBOXYLATE DERIVATIVES BY IODIDE
Authors: NELSEN S. F. , CALABRESE J. C.
Published: March 2016

Die Behandlung des Quadricyclens (I) mit NaJ in Acetonitril bei Raumtemperatur liefert die epimeren Jodnortricyclene (II) und (III), deren Struktur mittels NMR und chemisch ermittelt wird.
ChemInform Abstract: EPOXYNITRILE, REAKTION MIT KUPFER(I)‐DERIVATEN, OEFFNUNG DES EPOXIDRINGES
Authors: NORMANT JEAN‐MICHEL
Published: March 2016

Das Epoxynitril (I) reagiert mit Dimethyl‐CuLi in Diäthyläther bei ‐10 bis +25°C zu einem Gemisch der Hydroxynitrile (II)‐(IV); ein 2:1:12‐Gemisch dieser Verbindungen erhält man auch bei der Reaktion des Oxirans (I) mit Methyl‐Cu.
ChemInform Abstract: REAKTIONEN IN HYPERACIDEM MEDIUM 8. MITT. ALLGEMEINGUELTIGKEIT DER PHENOL‐DIENON‐ISOMERISIERUNG IN DER TRICYCLISCHEN REIHE
Authors: GESSON J. P. , JACQUESY J. C.
Published: March 2016

Mit NMR‐spektroskopischen Methoden wird die Desaromatisierung des Methyläthers (I) zum Dienon (II) in HF/SbFs untersucht.
ChemInform Abstract: PHOTOCHEMICAL ADDITION OF BENZENE TO CYCLOPENTENE
Authors: MERRITT V. Y. , CORNELISSE J. , SRINIVASAN R.
Published: March 2016

Die Bestrahlung einer Lösung von Benzol (I) in Cyclopenten (II) führt zur Bildung des (II)‐Dimeren (III) und der beiden Photoaddukte (IV) und (V).
ChemInform Abstract: HYDROGEN ABSTRACTION REACTIONS OF PEROXYDISULFURYL DIFLUORIDE
Authors: KIRCHMEIER ROBERT L. , SHREEVE JEAN'NE M.
Published: March 2016

Die Titelverbindung (II) reagiert mit geeigneten Molekülen unter Radikalbildung und H‐Abstraktion, so z.B. mit (I) zu den Fluorsulfonsäurederivaten (III) und Fluorsulfonsäure (IV), mit Ammoniak entsprechend zu dem Salz (XII).
ChemInform Abstract: FRIEDEL‐CRAFTS‐REACTIONS PART 24, DIACYLATIONS OF 2,7‐DIMETHYL‐NAPHTHALENE DEUTERIUM‐LABELLING AS AN AID TO STRUCTURAL DETERMINATIONS
Authors: GORE PETER H. , MIRI ADHID Y. , SIDDIQUEI ASIF S.
Published: March 2016

Die Diacetylierung führt zu 1,3‐ und 1,5‐Diacetyl‐2,7‐dimethyl‐naphthalin, die Dibenzoylierung dagegen zu 1,5‐ und 1,8‐Dibenzoyl‐2,7‐dimethylnaphthalin.
ChemInform Abstract: CARBOXYLATION REACTIONS USING THE REAGENT LITHIUM 4‐METHYL‐2,6‐DI‐TERT.‐BUTYLPHENOXIDE
Authors: COREY E. J. , CHEN R. H. K.
Published: March 2016

Verbindungen mit aktivierten Wasserstoffatomen werden bei Behandlung mit dem Lithiumphenolat (I) und Kohlendioxid in die entsprechenden Carbonsäuren übergeführt.
ChemInform Abstract: PHOSPHORUS PENTOXIDE‐METHANESULFONIC ACID, A CONVENIENT ALTERNATIVE TO POLYPHOSPHORIC ACID
Authors: EATON P. E. , CARLSON G. R. , LEE J. T.
Published: March 2016

Anstelle von Polyphosphorsäure kann als Kondensations‐ und Dehydratisierungsmittel ein Gemisch aus Phosphorpentoxid und Methansulfonsäure eingesetzt werden.
ChemInform Abstract: NEW CATALYTIC ROUTE TO ACRYLAMIDE
Authors: ‐ ‐
Published: March 2016

Bei den herkömmlichen technischen Verfahren wird Acrylnitril (I) in Gegenwart äquivalenter Mengen Schwefelsäure zu Acrylamid hydrolysiert.
ChemInform Abstract: NEW ASPARAGINE ANALOGS
Authors: CHANG P. K. , SCIARINI L. J. , HANDSCHUMACHER R. E.
Published: March 2016

Diaminobernsteinsäuren (I) werden zu (II) geschützt und dann über Anhydride (III) und Halbamide (IV) in die Asparaginsäurederivate (V) übergeführt.
ChemInform Abstract: AN IMPROVED SYNTHESIS OF DL‐CANAVANINE
Authors: YAMADA Y. , NODA H. , OKADA H.
Published: March 2016

Benzhydroxamsäure (I) wird mit Acrolein (II) in Methanol in Gegenwart von Benzyltrimethylammoniumhydroxid kondensiert.
ChemInform Abstract: SYNTHESIS AND REACTIVITY OF AN EXO,ENDO‐4,6‐DISUBSTITUTED BICYCLO(3,1,0)HEX‐2‐ENE
Authors: PADWA A. , KOEHN W.
Published: March 2016

7‐Phenyl‐norbornadien (I) reagiert mit Persäure über das Epoxid (II) zum Aldehyd (III) und weiter zum Oxidationsprodukt (IV), das auch unabhängig aus (III) erhalten werden kann.
ChemInform Abstract: A NEW HYDROGEN SELENIDE‐TRIETHYLAMINE CATALYSED SYNTHESIS OF FORMANILIDES FROM AROMATIC AMINES AND CARBON MONOXIDE
Authors: KONDO K. , SONODA N. , SAKURAI H.
Published: March 2016

Die Umsetzung der aromatischen Amine (I) mit Kohlenmonoxid (50 at) bei Temperaturen zwischen 100°C und 180°C in Gegenwart des Selenids (II) und anschließende Katalysator (II) kann in situ aus (I), Kohlenmonoxid, Triäthylamin und Selen dargestellt werden.
ChemInform Abstract: CYCLOPROPYLNITRENIUM IONS AND SUBSTITUENT EFFECTS
Authors: DEYRUP J. A. , GREENWALD R. B.
Published: March 2016

N‐T0syl‐2‐phenylcyclopropylamin (Ia) liefert mit Hypochlorit die N‐Chlorverbindung (Ib), die direkt weiter zu (IIa) gespalten wird.
ChemInform Abstract: ZINC‐INDUCED FREE‐RADICAL REACTIONS OF AROMATIC ALPHA‐HALOGENOKETONES WITH TERMINAL OLEFINS
Authors: GHERA E. , PERRY D. H. , SHOUA S.
Published: March 2016

Die Umsetzung der Bromketone (I) mit aktiviertem Zinkstaub oder einem Zink‐Kupfer‐Paar in siedendem Dimethylsulfoxid in Gegenwart von Natriumjodid und Kollidin ergibt die 1,4‐Diketone (II) und die Ketone (III).
ChemInform Abstract: SOLVENT DEPENDENT REACTIONS OF SINGLET OXYGEN WITH PHENYLCYCLOPROPENES
Authors: POLITZER I. R. , GRIFFIN G. W.
Published: March 2016

1,2,3‐Triphenylcyclopropen (I) reagiert mit Singlet‐Sauerstoff in Methylenchlorid über das Addukt (II) zum 1,2,3‐Tri.phenyl‐l ,3‐propandion (III), während in Aceton nur undefinierte Produkte und in Benzol/Methanol zwei noch nicht zugeordnete Verbindungen erhalten werden.
ChemInform Abstract: REACTIONS OF THIOKETONES PART 2, THIO‐OZONIDE FORMATION IN SOME NUCLEOPHILIC REACTIONS OF THIOKETONES WITH AMINES AND WITH BENZENETHIOL
Authors: CAMPBELL MALCOLM M. , EVGENIOS D. M.
Published: March 2016

Bei der Reaktion von Thiobenzophenon (I) mit den Aminen (II) wird jeweils das Thioozonid (III) gebildet; aus dem Adamantanthion (IV) wird mit Anilin (IIb) das Thioozonid (V) erhalten.
ChemInform Abstract: THE FORMATION OF DIMERS VIA THE REARRANGEMENT OF A TERTIARY ALICYCLIC HYDROPEROXIDE
Authors: BUSHICK R. D. , WARREN R. W.
Published: March 2016

1‐Methyl‐cyclopenten (I) reagiert mit Caroscher Säure oder einer Mischung aus Schwefelsäure und Wasserstoffperoxid zum Pyranyl‐Kation (II), das in 6‐Hydroxy‐ 2‐hexanon (III) übergehen kann.
ChemInform Abstract: ISOTHIOCYANATE 31. MITT. UMSETZUNG VON IMIDSAEUREESTERN UND AMIDINEN MIT IMIDOYLISOTHIOCYANATEN
Authors: BARNIKOW GUENTER , EBELING HORST
Published: March 2016

Aus entsprechenden Imidchloriden und Ammoniumthiocyanat in siedendem Aceton werden die Imidoyl‐isothiocyanate (I) dargestellt, von denen (Ia) bei Raumtemperatur den Imidester (II) zu den Verbindungen (III) addiert.
ChemInform Abstract: CENTRAL NERVOUS SYSTEM DEPRESSANTS PART 11, BENZODIAZEPINES WITH UREAS IN THE 2 POSITION
Authors: MOFFETT R. B. , RUDZICK A. D.
Published: March 2016

Aus den Amino‐benzodiazepinen (I) erhält man mit Isocyanaten (II) die Verbindungen (III).
ChemInform Abstract: STUDIES ON CYCLIC ORGANOTETRABORANE DERIVATIVES
Authors: ONAK THOMAS , GROSS KENNETH , TSE JAMES , HOWARD JAMES
Published: March 2016

Tetraboran (I) setzt sich mit Äthylen bzw. cis‐ oder trans‐Buten‐(2) im Heiß/kalt‐ Reaktor zu Dimethylen‐ bzw. Dimethyldimethylen‐tetraboran [(IIa) bzw. (IIb)] und mit Propen oder Cumulen zu Methylmethylen‐tetraboran (III) um.
ChemInform Abstract: DIE ADDITION VON TRIAETHYLSILAN AN BENZOYLTRIMETHYLSILAN UND DESSEN KOHLENSTOFF‐HOMOLOGES, DES PIVALOPHENON
Authors: CALAS R. , PICARD J. P. , BERNADOU F.
Published: March 2016

In Gegenwart von Indiumtrichlorid addiert sich Triäthylsilan (II) an die Ketogruppe von (I), wobei (Ia) dreimal so schnell reagiert wie (Ib).
ChemInform Abstract: ORGANIC PHOSPHORUS COMPOUNDS PART 63, THE SYNTHESIS AND PROPERTIES OF ALPHA‐CHLORO‐BETA‐STYRENEPHOSPHONIC‐, PHENYLACYLPHOSPHONIC‐, AND ALPHA‐CHLORO‐BETA‐METHYL‐BETA‐STYRENEPHOSPHONIC ACID
Authors: MAIER L.
Published: March 2016

PCl5 (II) liefert mit Phenylacetylen (I) den Komplex (III), der bei der Hydratisierung in ein Gemisch aus den beiden Phosphonsäuren (IV) und (V) übergeht.
ChemInform Abstract: NACHWEIS VON ALKYLIDENOXOPHOSPHORANEN DURCH CYCLOADDITION MIT CARBONYLVERBINDUNGEN
Authors: REGITZ MANFRED , SCHERER HANS , ILLGER WALTER , ECKES HELMUT
Published: March 2016

Das aus der Diazoverbindung (I) photochemisch in Methanol über das Carben (II) gebildete Oxophosphoran (III) lagert sofort Methanol zu dem Phosphinsäureester (IV) an.
ChemInform Abstract: PREPARATION AND PROPERTIES OF 1‐BROMO‐2,2,3,4,4‐PENTAMETHYLPHOSPHETAN 1‐OXIDE, C8H16P(0)BR, AND A COMPARISON WITH THE CHLOROCOMPOUND, HYDROLYSIS OF THESE TO THE ANHYDRIDE AND ACID. VIBRATIONAL SPECTRA
Authors: EMSLEY JOHN , MIDDLETON TREVOR B. , WILLIAMS JOHN K.
Published: March 2016

Die aus dem Trimethylpenten (I) erhältliche Titelverbindung (II) reagiert mit Diäthylamin nur träge, mit Methanol aber in guter Ausbeute unter nucleophiler Substitution des Br‐Atoms.
ChemInform Abstract: METAL HALIDE COMPLEXES OF 1,3‐DIOXAN
Authors: BARNES J. C. , DUNCAN C. S.
Published: March 2016

1,3‐Dioxan bildet mit Mn‐, Co‐, Ni‐ und Cu(II)‐halogeniden die 1:1‐Komplexe (I), denen aufgrund von Elektronen‐ und IR‐Spektren polymere pseudooktaedrische Strukturen mit Dioxan als Brückenligand (bei M = Mn, Co oder Ni) oder als terminalem Ligand (bei M = Cu) zugeordnet werden.
ChemInform Abstract: OXYMETALLATION PART 5, THE METHOXYMERCURATION AND TERT.‐BUTYL PEROXYMERCURATION OF REPRESENTATIVE ALPHA, BETA‐UNSATURATED ALDEHYDES AND THE TERT.‐BUTYL PEROXYMERCURATION OF ALPHA,BETA‐UNSATURATED PERACETALS
Authors: BLOODWORTH A. J. , BUNCE R. J.
Published: March 2016

Die Methoxymercurierung von Methacrylaldehyd (Ia), Crotonaldehyd (Ib) und Cinnamylaldehyd (Ic) liefert die Produkte (IV)‐(VII), wobei die Mercurierung an der aus Analog‐Reaktionen mit Ketonen und Estern erwarteten Stelle erfolgt.
ChemInform Abstract: STABILISIERUNG VON MONOMEREM DICHLORGERMYLEN
Authors: JUTZI PETER , HOFFMANN HANS JOACHIM , BRAUER DAVID JOHN , KRUEGER CARL
Published: March 2016

Das Silan (I) addiert Trichlorgerman unter Bildung des Benzothiazols (II), dessen thermische Zersetzung zur Spaltung in Trimethylchlorsilan und das Dichlorgermylen‐ Addukt (III) (thermisch stabile, hydrolyseempfindliche Kristalle) führt.
ChemInform Abstract: KOMPLEXE VON BLEI(II)‐ UND CADMIUMPERCHLORAT MIT THIOHARNSTOFF UND PHENYLTHIOHARNSTOFFEN
Authors: FEDOROV V. A. , FEDOROVA A. V. , NIFANT'EVA G. G. , SOBOLEVA L. G. , GRUBER L. I.
Published: March 2016

Durch Reaktion von Pb(ClO4), bzw. Cd(ClO4)2 mit stöchiometrischen Mengen entsprechender Thioharnstoffe in Äthanol oder Aceton werden die Komplexe (I) dargestellt.
ChemInform Abstract: REACTIONS OF VANADIUM(V) OXIDE TRIBROMIDE, PREPARATION AND PROPERTIES OF VANADIUM(IV) OXIDE DIBROMIDE COMPLEXES
Authors: NICHOLLS DAVID , SEDDON KENNETH R.
Published: March 2016

Durch Zusatz von VOBr3 zu Lösungen der.
ChemInform Abstract: REAKTIONEN AN KOMPLEXGEBUNDENEN LIGANDEN 13. MITT. DIPHOSPHAN‐UEBERGANGSMETALL‐KOMPLEXE, P2H4(CR(CO)5)2 UND P2H4(C5H5MN(CO)2)2
Authors: SELLMANN DIETER
Published: March 2016

Herstellung der Verbindungen aus den entsprechenden Carbonylen und P2H4in Tetrahydrofuran.
ChemInform Abstract: CHEMISTRY OF ((TRIMETHYLSILYL)METHYL)CARBENE COMPLEXES OF CHROMIUM, THERMOLYSIS OF OXIDO‐CARBENE SALTS
Authors: CONNOR J. A. , JONES E. M.
Published: March 2016

Die Einführung einer Trimethylsilylgruppe in metallstabilisierte Carbonium‐Systeme als Substituent am Carben‐Kohlenstoff führt zu erhöhter Reaktivität der Si‐CH2‐Bindung gegenüber Nucleophilen, wie am Beispiel der Reaktionen von (IV) zu (V), von (IIIa) zu (VIII), (IX) und (X) gezeigt wird.
ChemInform Abstract: PENTAMETHYLCYCLOPENTADIENYL DERIVATIVES OF TRANSITION METALS PART 4, SOME NEW (PENTAMETHYLCYCLOPENTADIENYL)METAL CARBONYL DERIVATIVES OF CHROMIUM, MOLYBDENUM AND TUNGSTEN, REACTIVITY OF BIMETALLIC COMPOUNDS WITH METAL‐METAL TRIPLE BONDS
Authors: KING R. B. , EFRATY A. , DOUGLAS W. M.
Published: March 2016

Die zweikernigen Komplexe (II) reagieren nonnalerweise unter Spaltung der Metall‐ Metall‐Dreifachbindung und Carbonyl‐Wanderung.
ChemInform Abstract: DARSTELLUNG METALLORGANISCHER VERBINDUNGEN MIT CHIRALEM MANGAN
Authors: LE MOIGNE F. , DABARD R.
Published: March 2016

Die Darstellung der diastereomeren Mangan‐Komplexe (III) und (IV) aus dem Mangantricarbonyl (I) über (II) wird beschrieben.
ChemInform Abstract: LIGAND EXCHANGE AND CHELATE RING CLOSURE KINETICS FOR SOME TRANS‐BIS(AMINO ACID)(TETRAMINE)COBALT(III) COMPLEXES
Authors: FITZGERALD JOHN J. , BRUBAKER GEORGE R.
Published: March 2016

Die mit Hilfe der Spektrophotometrie durchgeführten detaillierten kinetischen Untersuchungen zeigen, daß die basische Irlydrolyse der Titelkomplexe (I) bei pH 9, 12 und 48,5°C in zwei aufeinanderfolgenden Prozessen 1. Ordnung erfolgt.
ChemInform Abstract: REACTIONS OF POLY(TERTIARY PHOSPHINES) WITH DICOBALT OCTACARBONYL, FORMATION OF MONOCARBONYL DERIVATIVES OF COBALT(I)
Authors: PETERSEN RICHARD L. , WATTERS KENNETH L.
Published: March 2016

Komplexe der Typen (II) und (III) konnten sowohl durch thermische als auch durch Photo‐Reaktion des Carbonyls (I) mit den entsprechenden Liganden L" dargestellt werden, und zwar entsteht bei der ′thermischen Reaktion bevorzugt der Typ (II), bei der Photo‐Reaktion bevorzugt der Typ (III).
ChemInform Abstract: THE INTERACTION OF HETEROCYCLIC BASES WITH SQUARE‐PLANAR NICKEL(II) COMPLEXES OF SUBSTITUTED SALICYLALDIMINES
Authors: DAKTERNIEKS D. R. , GRADDON D. P. , LINDOY L. F. , MOCKLER G. M.
Published: March 2016

Die durch Umsetzung von Bis‐[salicylaldehydato]‐Ni(II)‐Komplexen mit n‐Butylamin oder Ni(II)‐acetat mit der Schiffschen Base des Amins und 2‐Hydroxy‐5‐chlorbenzophenon dargestellten, quadratisch‐planaren Basen‐Komplexe bilden in siedendem Pyridin oder 4‐Methylpyridin die sechsfach‐koordinierten Additionsverbindungen (I).
ChemInform Abstract: A NEW TYPE OF STABLE ORGANOMETALLIC COPPER COMPLEX, PROPERTIES AND STRUCTURE OF THE PRODUCT OF THE REACTION OF ARYLCOPPER COMPOUNDS WITH BIS(DIPHENYLPHOSPHINO)METHANE
Authors: CAMUS A. , MARSICH N. , NARDIN G. , RANDACCIO L.
Published: March 2016

Der bei Versuchen zur Stabilisierung von kupferorganischen Verbindungen aufgefundene gelbe diamagnetische Komplex (I) ist in Inertgas‐Atmosphäre bei Raumtemperatur stabil.
ChemInform Abstract: NEW ROUTE TO ARYL‐GOLD SIGMA‐BONDED COMPLEXES
Authors: BRAUNSTEIN P.
Published: March 2016

Die Tetraalkylammonium‐tetrahalogenoaurate (I) bilden mit den Phenylhydrazinhydrochloriden (II) die Arylgold‐Verbindungen (III) und die Salze (IV).
ChemInform Abstract: COMPLEXES OF THE ORGANOMETALLIC LIGANDS (PH3P)AU‐C(OR)=NAR AND ((RO)(AR‐N=)C)2HG
Authors: BONATI F. , MINGHETTI G.
Published: March 2016

Die organische Goldverbindung (I) kann gegenüber einigen Metallen als einzähniger Ligand wirken, wie an der Darstellung von (III), (V) und (X) gezeigt wird.
ChemInform Abstract: PREPARATION OF SOME NITRILE‐RUTHENIUM(II) COMPLEXES AND THEIR REACTIONS WITH CARBON MONOXIDE
Authors: NEWTON W. E. , SEARLES J. E.
Published: March 2016

Die katalytische Reduktion von RuCl3 ‐ 3 H2O mit Wasserstoffgas über Adams Katalysator in Lösungen der entsprechenden Nitrile liefert die Tetranitrilkomplexe (I).
ChemInform Abstract: HEXAKISAMINE‐ AND BENZONITRILEPENTAKISAMINE‐COMPLEXES OF RUTHENIUM(II), THE RUTHENIUM INDUCED ACTIVATION OF AMINES TO OXIDATION
Authors: MCWHINNIE W. R. , MILLER J. D. , WATTS J. B. , WADDAN D. Y.
Published: March 2016

Die Titelkomplexe (I) und (II) werden durch unter Ar durchgeführte Umsetzung von Ru(III)‐chlorid mit den entsprechenden Aminen in wäßriger Lösung bei Reduktion mit Zn‐Staub ohne oder mit darauffolgender Zugabe von in Aminen gelöstem Benzonitril und unter Zugabe von entsprechenden Anionen enthaltenen Salzen dargestellt.
ChemInform Abstract: ISOBORNYLOXYCARBONYL‐REST ALS SCHUTZGRUPPE FUER DIE GUANIDINOFUNKTION DES ARGININS
Authors: JAEGER GEORG , GEIGER ROLF
Published: March 2016

Bei der Umsetzung des α‐geschützten Arginins (I) mit Chlorkohlensäure‐isobornylester (II) entsteht das N5, Nw‐ Bis‐(isobornyloxycarbonyl)‐arginin (III).