bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design and Optimization of the Methanol‐to‐Olefin Process. Part I: Steady‐State Design and Optimization
Authors: Yu Bor‐Yih , Chien I‐Lung 
Published: April 2016

AbstractThe steady‐state design and optimization for a methanol‐to‐olefin (MTO) process is studied. The MTO process is a novel route for light olefin production, especially ethylene and propylene. Comparing with the traditional way to produce olefins by steam cracking, this process offers benefits such as a more flexible range of ethylene‐to‐propylene ratio, higher selectivity toward light olefin, and mild reaction conditions. The design of the overall MTO process is divided into four sections, namely, reaction section, conditioning section, first separation section, and second separation section. After the design of each sub‐part, optimization is performed, in which the design and operating variables are thoroughly investigated. By rigorous simulation, a more economically competitive design flowsheet of the overall MTO process is proposed.
Enzyme Mimics: Advances and Applications
Authors: Kuah Evelyn , Toh Seraphina , Yee Jessica , Ma Qian , Gao Zhiqiang 
Published: April 2016

AbstractEnzyme mimics or artificial enzymes are a class of catalysts that have been actively pursued for decades and have heralded much interest as potentially viable alternatives to natural enzymes. Aside from having catalytic activities similar to their natural counterparts, enzyme mimics have the desired advantages of tunable structures and catalytic efficiencies, excellent tolerance to experimental conditions, lower cost, and purely synthetic routes to their preparation. Although still in the midst of development, impressive advances have already been made. Enzyme mimics have shown immense potential in the catalysis of a wide range of chemical and biological reactions, the development of chemical and biological sensing and anti‐biofouling systems, and the production of pharmaceuticals and clean fuels. This Review concerns the development of various types of enzyme mimics, namely polymeric and dendrimeric, supramolecular, nanoparticulate and proteinic enzyme mimics, with an emphasis on their synthesis, catalytic properties and technical applications. It provides an introduction to enzyme mimics and a comprehensive summary of the advances and current standings of their applications, and seeks to inspire researchers to perfect the design and synthesis of enzyme mimics and to tailor their functionality for a much wider range of applications.
Construction of Giant‐Spin Hamiltonians from Many‐Spin Hamiltonians by Third‐Order Perturbation Theory and Application to an Fe3Cr Single‐Molecule Magnet
Authors: Tabrizi Shadan Ghassemi , Arbuznikov Alexei V. , Kaupp Martin 
Published: April 2016

AbstractA general giant‐spin Hamiltonian (GSH) describing an effective spin multiplet of an exchange‐coupled metal cluster with dominant Heisenberg interactions was derived from a many‐spin Hamiltonian (MSH) by treating anisotropic interactions at the third order of perturbation theory. Going beyond the existing second‐order perturbation treatment allows irreducible tensor operators of rank six (or corresponding Stevens operator equivalents) in the GSH to be obtained. Such terms were found to be of crucial importance for the fitting of high‐field EPR spectra of a number of single‐molecule magnets (SMMs). Also, recent magnetization measurements on trigonal and tetragonal SMMs have found the inclusion of such high‐rank axial and transverse terms to be necessary to account for experimental data in terms of giant‐spin models. While mixing of spin multiplets by local zero‐field splitting interactions was identified as the major origin of these contributions to the GSH, a direct and efficient microscopic explanation had been lacking. The third‐order approach developed in this work is used to illustrate the mapping of an MSH onto a GSH for an
trigonal Fe3Cr complex that was recently investigated by high‐field EPR spectroscopy. Comparisons between MSH and GSH consider the simulation of EPR data with both Hamiltonians, as well as locations of diabolical points (conical intersections) in magnetic‐field space. The results question the ability of present high‐field EPR techniques to determine high‐rank zero‐field splitting terms uniquely, and lead to a revision of the experimental GSH parameters of the Fe3Cr SMM. Indeed, a bidirectional mapping between MSH and GSH effectively constrains the number of free parameters in the GSH. This notion may in the future facilitate spectral fitting for highly symmetric SMMs.
Two‐Photon Excitation of a Plasmonic Nanoswitch Monitored by Single‐Molecule Fluorescence Microscopy
Authors: Impellizzeri Stefania , Simoncelli Sabrina , Hodgson Gregory K. , Lanterna Anabel E. , McTiernan Christopher D. , Raymo Françisco M. , Aramendia Pedro F. , Scaiano Juan. C. 
Published: April 2016

AbstractVisible‐light excitation of the surface plasmon band of silver nanoplates can effectively localize and concentrate the incident electromagnetic field enhancing the photochemical performance of organic molecules. Herein, the first single‐molecule study of the plasmon‐assisted isomerization of a photochrome‐fluorophore dyad, designed to switch between a nonfluorescent and a fluorescent state in response to the photochromic transformation, is reported. The photochemistry of the switchable assembly, consisting of a photochromic benzooxazine chemically conjugated to a coumarin moiety, is examined in real time with total internal reflection fluorescence microscopy in the presence of silver nanoplates excited with a 633 nm laser. The metallic nanostructures significantly enhance the visible light‐induced performance of the photoconversion, which normally requires ultraviolet excitation. The resulting ring‐open isomer is strongly fluorescent and can also be excited at 633 nm. These stochastic emission events are used to monitor photochromic activation and show quadratic dependence on incident power. The utilization of a single laser wavelength for both photochromic activation and excitation effectively mimics a pseudo two‐colours system.
Highly Enantioselective Fluorescent Recognition of Both Unfunctionalized and Functionalized Chiral Amines by a Facile Amide Formation from a Perfluoroalkyl Ketone
Authors: Wang Chao , Anbaei Parastoo , Pu Lin 
Published: April 2016

AbstractThe H8BINOL‐based perfluoroalkyl ketone (S)‐2 is found to exhibit highly enantioselective fluorescent enhancements toward both unfunctionalized and functionalized chiral amines. It greatly expands the substrate scope of the corresponding BINOL‐based sensor. A dramatic solvent effect was observed for the reaction of the amines with compound (S)‐2. In DMF, cleavage of the perfluoroalkyl group of compound (S)‐2 to form amides was observed but not in other solvents, such as methylene chloride, chloroform, THF, hexane, and perfluorohexane. Thus, the addition of another solvent, such as THF, can effectively quench the reaction of compound (S)‐2 with amines in DMF to allow stable fluorescent measurement. This is the first example that the formation of strong amide bonds under very mild conditions is used for the enantioselective recognition of chiral amines. The mechanism of the reaction of compound (S)‐2 with chiral amines is investigated by using various analytical methods including mass spectrometry as well as NMR and UV/Vis absorption spectroscopy.
A Solvent Switch for the Stabilization of Multiple Hemiacetals on an Inorganic Platform: Role of Supramolecular Interactions
Authors: Kalita Alok Ch. , Gupta Sandeep K. , Murugavel Ramaswamy 
Published: April 2016

AbstractReaction of Zn(OAc)2⋅2 H2O with 2,6‐diisopropylphenyl phosphate (dippH2) in the presence of pyridine‐4‐carboxaldehyde (Py‐4‐CHO) in methanol resulted in the isolation of a tetrameric zinc phosphate cluster [Zn(dipp)(Py‐4‐CH(OH)(OMe))]4⋅4 MeOH (1) with four hemiacetal moieties stabilized on the double‐4‐ring inorganic cubane cluster. The change of solvent from methanol to acetonitrile leads to the formation of [Zn(dipp)(Py‐4‐CHO)]4 (2), in which the coordinated Py‐4‐CHO retains its aldehydic form. Dissolution of 1 in CD3CN readily converts it to the aldehydic form and yields 2. Similarly 2, which exists in the aldehyde form in CD3CN, readily converts to the hemiacetal form in CD3OD/CH3OH. Compound 1 is an unprecedented example in which four hemiacetals have been stabilized on a single molecule in the solid state retaining its stability in solution as revealed by its 1H NMR spectrum in CD3OD. The solution stability of 1 and 2 has further been confirmed by ESI‐MS studies. To generalize the stabilization of multiple hemiacetals on a single double‐four‐ring platform, pyridine‐2‐carboxaldehyde (Py‐2‐CHO) was used as the auxiliary ligand in the reaction between zinc acetate and dippH2, leading to isolation of [Zn(dipp)(Py‐2‐CH(OH)(OMe))]4 (3). Understandably, recrystallization of 3 from acetonitrile yields the parent aldehydic form, [Zn(dipp)(Py‐2‐CHO)]4 (4). Single‐crystal X‐ray diffraction studies reveal that supramolecular bonding, aided by hydrogen‐bonding interactions involving the hemiacetal functionalities (C−OH, C−OMe, and C−H), are responsible for the observed stabilization. The hemiacetal/aldehyde groups in 1 and 2 readily react with p‐toluidine, 2,6‐dimethylaniline, and 4‐bromoaniline to yield the corresponding tetra‐Schiff base ligands, [Zn(dipp)(L)]4 (L=4‐methyl‐N‐(pyridin‐4‐ylmethylidene)aniline (5), 2,6‐dimethyl‐N‐(pyridin‐4‐ylmethylene)‐aniline (6), and 4‐bromo‐N‐(pyridin‐4‐ylmethylene)aniline (7)). Isolation of 5–7 opens up further possibilities of using 1 and 2 as new supramolecular synthons and ligands.
Differences and Commonalities in the Gas‐Phase Reactions of Closed‐Shell Metal Dioxide Clusters [MO2]+ (M=V, Nb, and Ta) with Methane
Authors: Zhou Shaodong , Li Jilai , Schlangen Maria , Schwarz Helmut 
Published: April 2016

AbstractHigh‐level electronic structure calculations, in combination with Fourier transform ion cyclotron resonance (FT‐ICR) mass spectrometric studies, permit the mechanism by which closed‐shell, “naked” [TaO2]+ brings about C−H bond activation of methane to be revealed. These studies also help to understand why the lighter congeners of [MO2]+ (M=V, Nb) are unreactive under ambient conditions.
High Nuclearity Antimonato‐Polyoxovanadate Cluster {V15Sb6O42} as a Synthon for the Solvothermal in situ Generation of α‐ and β‐{V14Sb8O42} Isomers
Authors: Wendt Michael , Näther Christian , Bensch Wolfgang 
Published: April 2016

AbstractNew heteroatom polyoxovanadates (POVs) were synthesized by applying a water‐soluble high‐nuclearity cluster as new synthon. The [V15Sb6O42]6− cluster shell exhibiting D3 symmetry was in situ transformed into completely different cluster shells, namely, the α‐[V14Sb8O42]4− isomer with D2d and the β‐[V14Sb8O42]4− isomer with D2h symmetry. The solvothermal reaction of {Ni(en)3}3[V15Sb6O42(H2O)x]⋅15 H2O (x=0 or 1; en=ethylenediamine) in water led to the crystallization of [{Ni(en)2}2V14Sb8O42]⋅5.5 H2O containing the β‐isomer. The addition of [Ni(phen)3](ClO4)2⋅0.5 H2O (phen=1,10‐phenanthroline) to the reaction slurry gave the new compound {Ni(phen)3}2[V14Sb8O42]⋅phen⋅12 H2O with the α‐isomer. Both transformation reactions are complex due the change of symmetry, the chemical composition, and rearrangement of the VO5 square pyramids and Sb2O5 handle‐like moieties.
ChemInform Abstract: DARSTELLUNG UND KRISTALLSTRUKTUR VONN MGNI2,5B2 UND LI1,2NI2,5B2
Authors: JUNG W. 
Published: April 2016

AbstractVon den Titelverbindungen werden Kristallpulver sowie Einkristalle aus den Elementen hergestellt . (genaue Reaktionsbedingungen im Original) und durch Röntgenbeugungsmethoden untersucht.
ChemInform Abstract: DARSTELLUNG UND KRISTALLSTRUKTUR VON MG5AL2SE8
Authors: DOTZEL K.‐P. , SCHAEFER H. 
Published: April 2016

AbstractZur Darstellung des ternären Titelselenids werden stöchiometrische Mengen der Elemente bei 0.1 Torr in Quarzglasampullen 12 h lang auf 1000°C erhitzt und über weitere 12 h abgekühlt.
ChemInform Abstract: ELECTRICAL AND CATALYTIC PROPERTIES OF LITHIUM‐DOPED MOLYBDENUM TRIOXIDE
Authors: CHAKRABARTY D. K. , RANE K. S. , BISWAS A. B. 
Published: April 2016

AbstractMoO3 ist bei niedriger Dotierung mit Li ein Halbleiter vom n‐Typ, wird aber bei 0.7 mo1‐% Li p‐leitend.
ChemInform Abstract: EFFECT OF TRITON X‐100 ON THE KINETICS OF IRREVERSIBLE ELECTRODE PROCESSES‐ POLAROGRAPHIC BEHAVIOR OF NICKEL(II), COBALT(II), ZINC(II) AND MANGANESE(II)
Authors: SHARMA S. S. , JHA S. K. , SINGH M. 
Published: April 2016

AbstractDer Einfluß zunehmender Konzentration an Triton X‐100 (bis zu 0.01%) auf das polarographische Verhalten von Ni(II), Co(II), Zn(II) und Mn(II) in 0.1 M KNOa‐Lösung wird untersucht, und die kinetischen Parameter k h und ana der Elektrodenreaktionen werden berechnet.
ChemInform Abstract: THALLIUM HALIDE EMISSION IN LAMINAR HYDROGEN‐NITROGEN DIFFUSION FLAMES
Authors: HENRION G. , MARQUARDT D. 
Published: April 2016

AbstractBei der flammenspektrophotometrischen Untersuchung von halogenidhaltigen wäßrigen T13+‐Lösungen werden die Molekülemissionsbanden von TlCl und TlBr beobachtet.
ChemInform Abstract: DARSTELLUNG EINIGER ALKALI‐ UND ERDALKALIPEROXOBORATE DURCH PERHYDROLYSE VON TRIS(METHOXY)BORAN
Authors: HELLER G. , ZAMBELLI J. 
Published: April 2016

AbstractPerhydrolyse von Tris(methoxy)boran mit H2O2/H,O‐Gemischen (85: 15 Gew.‐%) in butanolischen Lösungsmitteln in Gegenwart von Li‐ oder Cs‐tert.‐ butylat in bestimmten molaren Verhältnissen liefert die Alkaliperoxoborate (I).
ChemInform Abstract: PREPARATION AND SPECTROSCOPIC PROPERTIES OF AMINES CONTAINING GERMYL AND DIFLUOROPHOSPHINO‐GROUPS
Authors: EBSWORTH E. A. V. , RANKIN D. W. H. , WRIGHT J. G. 
Published: April 2016

AbstractEntsprechend der Reaktionsgleichung A bzw. durch analoge Umsetzungen wurden die Verbindungen (I)‐(IV) dargestellt.
ChemInform Abstract: HIGH RESOLUTION CARBON‐13 NMR SPECTROSCOPY. III. STRUCTURE DEPENDENCE ON THE VICINAL METHYL‐13C,H COUPLINGS IN METHYLAZULENES, METHYLACEHEPTYLENES, AND OTHER METHYL SUBSTITUTED POLYCYCLES WITH FIVE‐ AND SEVEN‐MEMBERED RINGS
Authors: BRAUN S. , KINKELDEI J. 
Published: April 2016

AbstractAus den unentkoppelten 13C‐NMR‐Spektren von 22 methylsubstituierten nichtbenzoiden polycyclisch konjugierten Kohlenwasserstoffen wurden die vicinalen Kopplungen von Ring‐H‐Atomen mit Methyl‐C‐Atomen (3JCH3,H) ermittelt und mit Bindungslängen sowie den entsprechenden (z.T.
ChemInform Abstract: TRANSITION METAL CLUSTER COMPLEXES‐ PART IV. FERROMAGNETIC SPIN COUPLING IN TRINUCLEAR ACETYLACETONEDIOXIMATONICKEL(II) COMPLEXES
Authors: SINGH C. B. , RAI H. C. , SAHOO B. 
Published: April 2016

AbstractDie 2:2:1‐molare Umsetzung von Acetylacetondioxim, Ni‐diacetat und den entsprechenden Ni‐Salzen in Ethanol führt zu den dreikernigen Ni‐Komplexen (I), deren Strukturen durch IR‐ und Elektronen‐ Spektren sowie magnetische Daten ermittelt werden.
ChemInform Abstract: THERMOLABILE HYDROCARBONS. 5. EVIDENCE OF A LINEAR RELATION BETWEEN THERMAL STABILITY AND STRAIN ENERGY OF ALKANES
Authors: RUECHARDT C. , BECKHAUS H.‐D. , HELLMANN G. , WEINER S. , WINIKER R. 
Published: April 2016

AbstractZwischen der freien Aktivierungsenthalpie ΔG‡ (300°C) der Thermolyse der Kohlenwasserstoffe (I) bzw. (III) und ihren durch Kraftfeldberechnungen (nach Engler‐Schleyer) ermittelten Spannungsenergien E besteht die lineare Beziehung ΔG‡ = ‐O.60 (±0.03)E + 65.6 (±1.0) kcal/mol.
ChemInform Abstract: LEAVING‐GROUP EFFECTS AND ION‐PAIR INTERMEDIATES IN BASE‐PROMOTED ELIMINATION COMPETING WITH BASE‐CATALYZED 1,3‐PROTON TRANSFER
Authors: THIBBLIN A. , AHLBERG P. 
Published: April 2016

AbstractIn Gegenwart der tertiären Amine Pyridin, Triethylamin oder N‐Ethyl‐piperidin oder von Na‐methanolat erfahren die Indene (I) in Methanol eine Eliminierung zu dem thermodynamisch stabilen Produkt (II) bzw. eine Umlagerung zu den Tautomeren (III).
ChemInform Abstract: ISOMERIZATION OF 2‐ALKYL‐1,4‐NAPHTHOQUINONES WITH SUBSTITUENTS OF ALLYL AND BENZYL TYPE
Authors: DETSINA A. M. , RUSSKIKH V. V. , FOKIN E. P. 
Published: April 2016

AbstractDas Tautomere (II) (Ausb. 18%; 1H‐NMR‐Spektrum) bildet sich aus dem Naphthochinon (I) auch bei der Bestrahlung mit Hg‐Licht (in Ethanol); nach dem Lösen der Verbindung (II) in DMSO läßt sich mit wäßrigem NaCl eine der Methoxyverbindung (III) entsprechende Hydroxyverbindung (Ausb. 45%; 1H‐NMR‐Spektren) fällen.
ChemInform Abstract: THE MECHANISM OF THE MEYER‐SCHUSTER REARRANGEMENT
Authors: EDENS M. , BOERNER D. , CHASE C. R. , NASS D. , SCHIAVELLI M. D. 
Published: April 2016

AbstractDie Umlagerung der tert.‐Arylpropargy1‐alkohole (I) zu den ungesättigten Ketonen (II) in Gegenwart von Säuren wird systematisch untersucht.
ChemInform Abstract: PHOTOREARRANGEMENT OF 10‐METHYLOCTALONE IN CONCENTRATED ACID SOLUTION
Authors: CORNELL D. G. , FILIPESCU N. 
Published: April 2016

Abstract10‐Methyl‐octalon (I) liefert in konz. Säure das Carbonium‐Ion (II), das reversibel wieder in (I) übergeht, bei einer Photolyse jedoch zum Cyclopentenyl‐cyclopentan (III) umlagert, das in das Keton (IV) übergeht.
ChemInform Abstract: TROPYLIUM IONS AND TROPILIDENES, IV. AMBIDENT REACTIVITY OF 5‐ AND 7‐METHOXYBENZOCYCLOHEPTENYLIUM IONS. A CONTRIBUTION TO THE QUESTION OF THERMAL METHOXYL SHIFTS IN CYCLOHEPTATRIENES
Authors: FOEHLISCH B. , FISCHER C. , ROGLER W. 
Published: April 2016

AbstractDas Salz (Ia) reagiert mit Li‐alanat bzw. mit den Verbindungen(II) bzw. (III) unter Addition des Nucleophils an C‐5 zu den Verbindungen (IV); das (Ia)‐Isomere (Ib) liefert mit (III) ein Gemisch der Produkte (V) und (VI) (keine präparative Trennung möglich).
ChemInform Abstract: KINETIC STUDIES OF SPIN‐TRAPPING REACTIONS. I. THE TRAPPING OF THE TERT‐BUTYL L RADICAL GENERATED BY THE PHOTODISSOCIATION OF 2‐METHYL‐2‐NITROSOPROPANE BY SEVERAL SPIN‐TRAPPING AGENTS
Authors: DOBA T. , ICHIKAWA T. , YOSHIDA H. 
Published: April 2016

AbstractDie Photolyse der Titelverbindung (I) in Benzol ergibt tert.‐Butylradikale, die mit unzersetztem (I) das Addukt (II) ergeben.
ChemInform Abstract: KINETICS AND MECHANISM OF OXIDATION OF BENZYL ALCOHOL AND 1‐PHENYLETHANOL BY LEAD TETRAACETATE
Authors: BANERJI K. K. , BANERJEE S. K. , SHANKER R. 
Published: April 2016

AbstractDie Titelreaktion, die zum entsprechenden Aldehyd bzw. Keton führt, ist 1. bzw. 2. Ordnung bezüglich des Oxidationsmittels bzw. des Substrats.
ChemInform Abstract: THE REACTION OF PHOSPHORUS YLIDES WITH SINGLET OXYGEN
Authors: JEFFORD C. W. , BARCHIETTO G. 
Published: April 2016

AbstractBei der Behandlung mit Singlett‐Sauerstoff erhält man aus den P‐Yliden (I) neben verschiedenen weiteren Reaktionsprodukten unter Oxidation die Oxo‐ester (II) sowie Triphenylphosphinoxid (III).
ChemInform Abstract: NEW REAGENTS. 8. CARBONYL OLEFINATION WITH (TRIPHENYLSTANNYL)METHYLLITHIUM
Authors: KAUFFMANN T. , KRIEGESMANN R. , WOLTERMANN A. 
Published: April 2016

AbstractDas aus dem bekannten Methyliodid (I) leicht erhältliche Methyl‐Li (II) reagiert mit den Carbonylverbindungen (III) (nicht dagegen mit Benzophenon) zu den Alkoholaten (IV), die thermisch direkt, besser jedoch nach Hydrolyse zu den Stannylethanolen (V) die Olefine (VI) liefern.
ChemInform Abstract: DIRECT FLUORINATION OF 2,2,4,4‐TETRAMETHYLPENTANE. STERICALLY PROTECTED RESIDUAL PROTONS.
Authors: SHIMP L. A. , LAGOW R. J. 
Published: April 2016

AbstractBei der Fluorierung bei niederer Temperatur erhält man aus 2,2,4,4‐ Tetramethyl‐pentan (I) die Fluorierungsprodukte (II)‐(IV), wobei die Fluorierung der mittelständigen Methylengruppe erschwert ist.
ChemInform Abstract: STEREOSELECTIVE SYNTHESIS OF THREO‐3‐HYDROXYCARBOXYLIC ACIDS. STEREOCHEMISTRY OF AN ALDOL TYPE ADDITION UNDER KINETIC AND THERMODYNAMIC CONTROL
Authors: MULZER J. , SEGNER J. , BRUENTRUP G. 
Published: April 2016

AbstractAus den Dianionen (I) von Carbonsäuren erhält man mit den Aldehyden (II) die isomeren Addukte (III) und (IV), aus denen die Hydroxy‐carbonsäuren (V) und (VI) erhalten werden.
ChemInform Abstract: ELECTROPHILIC SULFIDES(II) AS A NOVEL CATALYST. V. STRUCTURE, NUCLEOPHILICITY, AND STERIC COMPRESSION OF STABILIZED SULFUR YLIDES AS OBSERVED BY CARBON‐13‐NMR SPECTROSCOPY
Authors: MATSUYAMA H. , MINATO H. , KOBAYASHI M. 
Published: April 2016

AbstractAnhand der chemischen Verschiebungen der Sulfoniumylide (I) in [D6]‐DMSO wird auf einen erheblichen Betainanteil an der kanonischen Struktur geschlossen.
ChemInform Abstract: 1,3‐ AND 1,4‐DIENYLIC SULFOXIDES BY REACTION OF SULFOLENES AND BICYCLIC SULFONES WITH GRIGNARD REAGENTS
Authors: GAONI Y. 
Published: April 2016

AbstractBei der Behandlung mit Grignardverbindungen (II) erhält man aus den Dihydrothiophenen (I) Mischungen der isomeren Spaltprodukte (III) und (IV) in guten Ausbeuten.
ChemInform Abstract: THE MICHAEL INDUCED RAMBERG‐BACKLUND OLEFIN SYNTHESIS
Authors: CHEN T. B. R. A. , BURGER J. J. , DE WAARD E. R. 
Published: April 2016

AbstractChlormethylsulfonyl‐ Chlorid (I) reagiert mit Butadien (II) zu einem Gemisch der stereoisomeren Addukte (III), dessen Dehydrochlorierung zu den Dienen (IV) führt.
ChemInform Abstract: ADDITION REACTION OF β‐IMINO‐ AND β‐OXODITHIOCARBOXYLIC ACIDS WITH METHYL PROPIOLATE AND WITH STRONGLY ELECTROPHILIC OLEFINS
Authors: TAKESHIMA T. , MURAOKA M. , FUKADA N. , TAKAYAMA A. , YAMAMOTO T. 
Published: April 2016

AbstractAus den 2‐Imino‐ und 2‐Oxo‐ cyclopentan‐dithiocarbonsäuren (Ia)‐(Ic) bzw. dem Diaza‐Analogon (IV) erhält man mit Propiolsäureester (II) die Vinylester (III) bzw. (V).
ChemInform Abstract: HYDROGEN MIGRATION IN 2‐CARBENA‐6,6‐DIMETHYLNORBORNANE
Authors: FREEMAN P. K. , HARDY T. A. , BALYEAT J. R. , WESCOTT L. D. JUN. 
Published: April 2016

AbstractUmlagerungsreaktionen an Carbenen in der Norbornan‐Reihe werden unter Verwendung von deuterierten Ausgangsverbindungen untersucht.
ChemInform Abstract: INSTABILITY OF α‐PHENYL‐β,β‐DIMETHYLVINYLLITHIUM, KINETICS OF AN APPARENT VINYL ANION‐TO‐ALLYL ANION REARRANGEMENT
Authors: KNORR R. , LATTKE E. 
Published: April 2016

AbstractAus der Vinyllithiurn‐Verbindung (II) erhält man mit Wasser bzw. Deuteriumoxid die Dimethylstyrole (I).
ChemInform Abstract: REACTIONS OF 4‐NITROPHTHALIC ANHYDRIDE WITH POTASSIUM FLUORIDE AND POTASSIUM NITRITE
Authors: MARKEZICH R. L. , ZAMEK O. S. , DONAHUE P. E. , WILLAMS F. J. 
Published: April 2016

Abstract4‐Nitro‐phthalsäureanhydrid (II) wird mit Kaliumfluorid bzw. Fnitrit behandelt, und hierbei werden einerseits die Fluorverbindung (I), andererseits das Dikaliumphthalat (III) erhalten.
ChemInform Abstract: REACTIONS OF PHENOXIDES WITH NITRO‐ AND HALO‐SUBSTITUTED PHTHALIMIDES
Authors: WILLIAMS F. J. , DONAHUE P. E. 
Published: April 2016

AbstractAus den Phthalsäureanhydriden (I) werden mit (II) die Imide (III) hergestellt, die mit Natriumphenolat (IV) zu den Substitutionsprodukten (V) reagieren.
ChemInform Abstract: NONCLASSICAL ARBUZOV REARRANGEMENT. REACTION OF ALKYLPHENYLSULFONIUM YLIDES OF DIMEDONE WITH TRIALKYLPHOSPHITES
Authors: BELKIN YU. V. , POLEZHAEVA N. A. , ARBUZOV B. A. 
Published: April 2016

AbstractNonclassical Arbuzov Rearrangement.
ChemInform Abstract: MULTI‐BRIDGED AROMATIC COMPOUNDS, IX. SYNTHESIS AND STEREOCHEMISTRY OF TRIPLY CLAMPED BIPHENYL SYSTEMS
Authors: VOEGTLE F. , STEINHAGEN G. 
Published: April 2016

AbstractDie Titel‐Kohlenwasserstoffe (IV) und (VII) mit paralleler"face‐to‐face"‐Anordnung der Biphenyleinheiten werden synthetisiert: Die sukzessiv aus dem Biphenyl (Ia) erhältlichen Derivate (Ib) und (Ic) liefern bei der Kondensation hauptsächlich das Trisulfid (IIa), dessen Sulfon (IIb) bei der Pyrolyse (IV) gibt.
ChemInform Abstract: STEREOSELECTIVE MONOALKYLATION OF α‐HALOCYCLOPROPYLLITHIUMS. A VERSATILE METHOD FOR THE SYNTHESIS OF α‐ALKYLCYCLOPROPYL ACETATES AN ALKYLIDENECYCLOPROPANES
Authors: KITATANI K. , HIYAMA T. , NOZAKI H. 
Published: April 2016

AbstractDie aus den Dibrompropanen (II) gebildeten Carbenoide werden durch Methyliodid unter Bildung der Verbindungen (I) bzw. (I)+(III) methyliert (das Produktverhältnis hängt stark von der Einwirkungsdauer der Carbenoide ab); aus dem Dichlorcyclopropan (IV) entstehen analog die Produkte (V) + (VI), jedoch in dem angegebenen Verhältnis (keine Ausb.‐Angaben).