bluuebunny/crossref_metadata_2025_split huggingface dataset:
Contrasts between Mild and Harsh Oxidation of Carbon Nanotubes in terms of their Properties and Electrochemical Performance
Authors: Gusmão Rui , Sofer Zdeněk , Nováček Michal , Pumera Martin 
Published: April 2016

AbstractFundamental studies and electrochemical applications of carbon nanotubes (CNTs) have impacted a wide range of disciplines. A key issue for CNT electrochemistry is to understand how the physical, chemical, and electronic properties of different CNT materials affect their electrochemical performance. We investigate the differences arising from CNTs undergoing mild (H2O2) or harsh (HNO3) oxidation processes. Morphological assessment and chemical characterization of CNT materials revealed that HNO3 treatment (CNT–HNO3) was effective in removing a large part of the metallic impurities, whereas H2O2 treatment (CNT–H2O2) was more proficient in eliminating carbonaceous imperfections in the starting CNT material (CNTprist). We investigated the electrocatalytic and electron‐transfer properties of CNTprist and oxidized CNTs on a variety of electrochemical probes, which are sensitive to carbon surfaces as well as its oxygen‐containing groups and/or metallic impurities. Electrochemical results show that, for the studied molecules, CNTprist and CNT–H2O2 exhibit mostly indistinguishable performances, whereas CNT–HNO3 yields an improved performance.
Access to Base Adducts of Low‐Valent Organotin‐Hydride Compounds by Controlled, Stepwise Hydrogen Abstraction from a Tetravalent Organotin Trihydride
Authors: Sindlinger Christian P. , Grahneis Wiebke , Aicher Frederik S. W. , Wesemann Lars 
Published: April 2016

AbstractHydrogen can be selectively removed from organotin trihydrides to generate the corresponding organohydrostannylene intermediates. Depending on the size of the substituent and the mode of generation, the intermediates undergo further reactions. Herein, we report on the formation of a variety of organotin hydrides with tin in the oxidation states SnII, SnI–SnIII and SnIII–SnIII, all accessed by the controlled removal of hydrogen from the tetravalent Ar′SnIV trihydride (Ar′=2,6‐dimesitylphenyl, mesityl=2,4,6‐trimethylphenyl).
Multiple Decay Mechanisms and 2D‐UV Spectroscopic Fingerprints of Singlet Excited Solvated Adenine‐Uracil Monophosphate
Authors: Li Quansong , Giussani Angelo , Segarra‐Martí Javier , Nenov Artur , Rivalta Ivan , Voityuk Alexander A. , Mukamel Shaul , Roca‐Sanjuán Daniel , Garavelli Marco , Blancafort Lluís 
Published: April 2016

AbstractThe decay channels of singlet excited adenine uracil monophosphate (ApU) in water are studied with CASPT2//CASSCF:MM potential energy calculations and simulation of the 2D‐UV spectroscopic fingerprints with the aim of elucidating the role of the different electronic states of the stacked conformer in the excited state dynamics. The adenine 1La state can decay without a barrier to a conical intersection with the ground state. In contrast, the adenine 1Lb and uracil S(U) states have minima that are separated from the intersections by sizeable barriers. Depending on the backbone conformation, the CT state can undergo inter‐base hydrogen transfer and decay to the ground state through a conical intersection, or it can yield a long‐lived minimum stabilized by a hydrogen bond between the two ribose rings. This suggests that the 1Lb, S(U) and CT states of the stacked conformer may all contribute to the experimental lifetimes of 18 and 240 ps. We have also simulated the time evolution of the 2D‐UV spectra and provide the specific fingerprint of each species in a recommended probe window between 25 000 and 38 000 cm−1 in which decongested, clearly distinguishable spectra can be obtained. This is expected to allow the mechanistic scenarios to be discerned in the near future with the help of the corresponding experiments. Our results reveal the complexity of the photophysics of the relatively small ApU system, and the potential of 2D‐UV spectroscopy to disentangle the photophysics of multichromophoric systems.
Host–Guest [2+2] Cycloaddition Reaction: Postsynthetic Modulation of CO2 Selectivity and Magnetic Properties in a Bimodal Metal–Organic Framework
Authors: Hazra Arpan , Bonakala Satyanarayana , Bejagam Karteek K. , Balasubramanian Sundaram , Maji Tapas Kumar 
Published: April 2016

AbstractSimultaneous tuning of permanent porosity and modulation of magnetic properties by postsynthetic modification (PSM) with light in a metal–organic framework is unprecedented. With the aim of achieving such a photoresponsive porous magnetic material, a 3D photoresponsive biporous framework, MOF1, which has 2D channels occupied by the guest 1,2‐bis(4‐pyridyl)ethylene (bpee), H2O, and EtOH molecules, has been synthesized. The guest bpee in 1 is aligned parallel to pillared bpee with a distance of 3.9 Å between the ethylenic groups; this allows photoinduced PSM of the pore surface through a [2+2] cycloaddition reaction to yield MOF2. Such photoinduced PSM of the framework structure introduces enhanced CO2 selectivity over that of N2. The higher selectivity in MOF2 than that of MOF1 is studied through theoretical calculations. Moreover, MOF2 unveils reversible changes in Tc with response to dehydration–rehydration. This result demonstrates that photoinduced PSM is a powerful tool for fabricating novel functional materials.
Highly Active Multidentate Ligand‐Based Alkyne Metathesis Catalysts
Authors: Du Ya , Yang Haishen , Zhu Chengpu , Ortiz Michael , Okochi Kenji D. , Shoemaker Richard , Jin Yinghua , Zhang Wei 
Published: April 2016

AbstractAlkyne metathesis catalysts composed of molybdenum(VI) propylidyne and multidentate tris(2‐hydroxylbenzyl)methane ligands have been developed, which exhibit excellent stability (remains active in solution for months at room temperature), high activity, and broad functional‐group tolerance. The homodimerization and cyclooligomerization of monopropynyl or dipropynyl substrates, including challenging heterocycle substrates (e.g., pyridine), proceed efficiently at 40–55 °C in a closed system. The ligand structure and catalytic activity relationship has been investigated, which shows that the ortho groups of the multidentate phenol ligands are critical to the stability and activity of such a catalyst system.
Multistate Switches: Ruthenium Alkynyl–Dihydroazulene/Vinylheptafulvene Conjugates
Authors: Vlasceanu Alexandru , Andersen Cecilie L. , Parker Christian R. , Hammerich Ole , Morsing Thorbjørn J. , Jevric Martyn , Lindbæk Broman Søren , Kadziola Anders , Nielsen Mogens Brøndsted 
Published: April 2016

AbstractMultimode molecular switches incorporating distinct and independently addressable functional components have potential applications as advanced switches and logic gates for molecular electronics and memory storage devices. Herein, we describe the synthesis and characterization of four switches based on the dihydroazulene/vinylheptafulvene (DHA/VHF) photo/thermoswitch pair functionalized with the ruthenium‐based Cp*(dppe)Ru ([Ru*]) metal complex (dppe=1,2‐bis(diphenylphosphino)ethane; Cp*=pentamethylcyclopentadienyl). The [Ru*]–DHA conjugates can potentially exist in six different states accessible by alternation between DHA/VHF, RuII/RuIII, and alkynyl/vinylidene, which can be individually stimulated by using light/heat, oxidation/reduction, and acid/base. Access to the full range of states was found to be strongly dependent on the electronic communication between the metal center and the organic photoswitch in these [Ru*]–DHA conjugates. Detailed electrochemical, spectroscopic (UV/Vis, IR, NMR), and X‐ray crystallographic studies indeed reveal significant electronic interactions between the two moieties. When in direct conjugation, the ruthenium metal center was found to quench the photochemical ring‐opening of DHA, which in one case could be restored by protonation or oxidation, allowing conversion to the VHF state.
Applying Mechanochemistry for Bottom‐Up Synthesis and Host–Guest Surface Modification of Semiconducting Nanocrystals: A Case of Water‐Soluble β‐Cyclodextrin‐Coated Zinc Oxide
Authors: Krupiński Piotr , Kornowicz Arkadiusz , Sokołowski Kamil , Cieślak Anna M. , Lewiński Janusz 
Published: April 2016

AbstractMechanochemistry has recently emerged as an environmentally friendly solventless synthesis method enabling a variety of transformations including those impracticable in solution. However, its application in the synthesis of well‐defined nanomaterials remains very limited. Here, we report a new bottom‐up mechanochemical strategy to rapid mild‐conditions synthesis of organic ligand‐coated ZnO nanocrystals (NCs) and their further host–guest modification with β‐cyclodextrin (β‐CD) leading to water‐soluble amide‐β‐CD‐coated ZnO NCs. The transformations can be achieved by either one‐pot sequential or one‐step three‐component process. The developed bottom‐up methodology is based on employing oxo‐zinc benzamidate, [Zn4(μ4‐O)(NHOCPh)6], as a predesigned molecular precursor undergoing mild solid‐state transformation to ZnO NCs in the presence of water in a rapid, clean and sustainable process.
Hückel's Rule of Aromaticity Categorizes Aromatic closo Boron Hydride Clusters
Authors: Poater Jordi , Solà Miquel , Viñas Clara , Teixidor Francesc 
Published: April 2016

AbstractA direct connection is established between three‐dimensional aromatic closo boron hydride clusters and planar aromatic [n]annulenes for medium and large boron clusters. In particular, the results prove the existence of a link between the two‐dimensional Hückel rule, as followed by aromatic [n]annulenes, and Wade–Mingos’ rule of three‐dimensional aromaticity, as applied to the aromatic [BnHn]2− closo boron hydride clusters. The closo boron hydride clusters can be categorized into different series, according to the n value of the Hückel (4 n+2) π rule. The distinct categories studied in this work correspond to n=1, 2, and 3. Each category increases in geometrical difficulty but, more importantly, it is possible to associate each category with the number of pentagonal layers in the structure perpendicular to the main axis. Category 1 has one pentagonal layer, category 2 has two, and category 3 has three.
Synthesis of Novel Imidazo[1,2‐a]pyridin‐2‐amines from Arylamines and Nitriles via Sequential Addition and I2/KI‐Mediated Oxidative Cyclization
Authors: Tian Xianhai , Song Lina , Wang Manman , Lv Zhigang , Wu Jie , Yu Wenquan , Chang Junbiao 
Published: April 2016

AbstractA novel and practical strategy for the construction of imidazo[1,2‐a]pyridin‐2‐amine frameworks has been developed. The present sequential approach involves addition of arylamines to nitriles and I2/KI‐mediated oxidative C−N bond formation without purification of the intermediate amidines. This operationally simple synthetic process provides a facile access to a variety of new 2‐amino substituted imidazo[1,2‐a]pyridines and related heterocyclic compounds in an efficient and scalable fashion.
5‐Mercuricytosine: An Organometallic Janus Nucleobase
Authors: Ukale Dattatraya , Shinde Vaishali S. , Lönnberg Tuomas 
Published: April 2016

AbstractThe base‐pairing properties of 5‐mercuricytosine have been explored at the monomer level by NMR titrations and at the oligonucleotide level by melting temperature measurements. The NMR studies revealed a relatively high affinity for guanine, hypoxanthine, and uridine, that is, bases that are deprotonated upon coordination of HgII. Within an oligonucleotide duplex, 5‐mercuricytosine formed HgII‐mediated base pairs with thymine and guanine. In the former case, the duplex formed was as stable as the respective duplex comprising solely Watson–Crick base pairs. Based on detailed thermodynamic analysis of the melting curves, the stabilization by the HgII‐mediated base pairs may be attributed to a comparatively low entropic penalty of hybridization.
ChemInform Abstract: HEXAGONAL PEROVSKITES WITH CATIONIC VACANCIES. XXIX. STRUCTURE OF BA4SCREW□O12 ‐ FUNCTION OF OCTAHEDRAL CATIONIC VACANCIES IN PEROVSKITE STACKING POLYTYPES
Authors: KEMMLER‐SACK S. , HERRMANN M. 
Published: April 2016

AbstractDer hexagonale Titelperowskit kristallisiert in einer rhomboedrischen 12L‐Struktur (R3m; Sequenz(hhcc)3).
ChemInform Abstract: THE NATURE OF THE CHARGED SILVER CLUSTERS IN DEHYDRATED ZEOLITES OF TYPE A
Authors: GELLENS L. R. , MORTIER W. J. , SCHOONHEYDT R. A. , UYTTERHOEVEN J. B. 
Published: April 2016

AbstractAn 4 unterschiedlich vorbehandelten, mit Ag beladenen Zeolithen vom Typ A mit verschiedenen Ag‐Gehalten werden vergleichende röntgenographische und reflexionsspektroskopische Untersuchungen vorgenommen.
ChemInform Abstract: REDUCTION OF NITROAMINE (NH2NO2) BY VANADIUM(II) AND CHROMIUM(II) IN ACID SOLUTION
Authors: HUGHES M. N. , OKOLOW‐ZUBKOWSKA M. , WALLIS H. L. 
Published: April 2016

AbstractNHzNOz reagiert mit V(II) unter 2‐Elektronenreduktion zu N2 und H2O. NH2′5NO2 liefert "N‐′SN.
ChemInform Abstract: MAGNETIC STUDIES AND THE CRYSTAL AND MOLECULAR STRUCTURE OF (ENH2)(V(HEDTA‐H))2.CNTDOT.2H2O: A NOVEL DI‐μ‐ALCOXY‐BRIDGED DIMER OF SEVEN‐COORDINATE VANADIUM(III)
Authors: SHEPHERD R. E. , HATFIELD W. E. , GHOSH D. , STOUT C. D. , KRISTINE F. J. , RUBLE J. R. 
Published: April 2016

AbstractDie Titelverbindung (I) kristallisiert in der Raumgruppe Pna21 mit Z=4.
ChemInform Abstract: ELECTRON DEFICIENT HETEROAROMATIC AMMONIOAMIDATES. PART 21. N‐(3‐QUINAZOLINIO)AMIDATES. PART 9. ADDITION REACTIONS OF SOME N‐(3‐QUINAZOLINIO)AMIDATES WITH ACETONE
Authors: BARTA‐SZALAI G. , CSOEREGH I. + , CZUGLER M. , FETTTER J. , LEMPERT K. , MOELLER J. 
Published: April 2016

AbstractDie Amidate (I) bilden mit Aceton in Gegenwart von n‐Butylamin die Addukte (II) und (III) [mit Ausnahme von (IId) und (IIIc); Hauptprodukt der Reaktion von (Id) ist (IV)] in einem von der Substitution abhängigen Verhältnis, in Gegenwart von SiO2 (in zwei untersuchten Fällen) dagegen ausschließlich Addukte des Typs (II).
ChemInform Abstract: HETEROCYCLIZATION WITH IMINIUM CHLORIDES. PART 3. SYNTHESIS OF 3,4‐DIHYDRO‐(1H)‐1,3,4‐BENZOTRIAZEPINE‐2,5‐DIONES
Authors: BITTER I. , SZOECS L. , TOEKE L. 
Published: April 2016

AbstractWährend die Behandlung des AmmoniobenzoxaZiIIOHS (IDmit Hydrazin bzw. Phenylhydrazin zu den Ureidobenzhydraziden (III) führt, die thermisch zu den Chinazolindionen (IV) bzw. (V) cyclisiert werden, gelingt die Darstellung des gewünschten Dihydrobenzotriazepindions (VI) aus (II) und Methylhydrazin.
ChemInform Abstract: THERMOLYTIC TRANSFORMATIONS OF POLYFLUORO ORGANIC COMPOUNDS. XXIV. HIGH‐TEMPERATURE REACTIONS OF PENTAFLUOROTOLUENE AND ITS α‐HALOGENATED ANALOGS WITH DIHALOCARBENE SOURCES
Authors: DVORNIKOVA K. V. , SAVCHENKO T. I. , KOLESNIKOVA I. V. , PETROVA T. D. , PLATONOV V. E. 
Published: April 2016

AbstractBei Copyrolysereaktionen (Quarzrohr; N2‐Strom) der Toluole (II) mit Chlordifluormethan entstehen hauptsächlich die Indane (I).
ChemInform Abstract: PERFLUOROALLYL FLUOROSULFATE, A REACTIVE NEW PERFLUOROALLYLATING AGENT
Authors: KRESPAN C. G. , ENGLAND D. C. 
Published: April 2016

AbstractDie Reaktion von SO3 mit einem 1.5‐2fachen Überschuß Perfluorpropen (I) gibt neben dem Sulton (II) das Titelreagenz (III), das beim Behandeln mit SO3 /B(O‐Me)3 in (I) übergeht; unter gleichen Bedingungen erweist sich das Sulton (II) als stabil.
ChemInform Abstract: SYNTHESIS AND TAUTOMERIC STRUCTURES OF ACYLCYCLOPENTANE‐1,2,4‐TRIONES
Authors: FRANKLIN R. W. , WARD R. S. , ROBERTS D. W. 
Published: April 2016

AbstractDie 1H‐ und 13C‐NMR‐Daten der alkoxycarbonylsubstituierten Cyclopentantrione (II) weisen darauf hin, daß diese überwiegend in einer Dienol‐Form, wahrscheinlich (III), vorliegen.
ChemInform Abstract: 6‐METHYLENECYCLOHEXANONE‐2,4‐DICARBOXYLATES FROM THE ANIONS OF SECONDARY AMIDES AND ACRYLATES
Authors: GALT R. H. B. , MATUSIAK Z. S. 
Published: April 2016

AbstractAcrylsäureester (II) reagieren in Gegenwart der Amide (I) in Form der mit NaH hergestellten Anionen über diskutierte Zwischenstufen zu den Trimerisierungsprodukten (III) neben geringen Anteilen an den Cyclohexenolen (IV) und (V).
ChemInform Abstract: SPHERANDS, THE FIRST LIGAND SYSTEMS FULLY ORGANIZED DURING SYNTHESIS RATHER THAN DURING COMPLEXATION
Authors: TRUEBLOOD K. N. , KNOBLER C. B. , MAVERICK E. , HELGESON R. C. , BROWN S. B. , CRAM D. J. 
Published: April 2016

AbstractDurch Kupplung von 6 monomeren Einheiten der Verbindung (I) wird das Titelsystem (II) gewonnen, das direkt ‐ nach bekannter Methode ‐ in den Komplex (IIIa) übergeführt wird.
ChemInform Abstract: REACTIONS OF OXAZOLES WITH ACETYLENE DERIVATIVES. PART III. REACTIONS OF TRISUBSTITUTED OXAZOLE DERIVATIVES WITH ETHYL PROPIOLATE
Authors: JAWORSKI T. , MIZERSKI T. 
Published: April 2016

AbstractDie Dienreaktion der zum Teil bisher unbekannten Oxazole (I) mit Elektronenakzeptorgruppen in Position 2 oder5 wird untersucht.
ChemInform Abstract: INVESTIGATION IN TETRONIC ACID KETOXIME DERIVATIVES. STRUCTURE AND BECKMANN REARRANGEMENT. SYNTHESIS OF 3‐ACETAMIDOTETRONIC ACIDS
Authors: GELIN S. 
Published: April 2016

AbstractAus den Tetronsäuren (I) werden die Oxime (II) hergestellt und mit Alkali und Benzolsulfonsäurechlorid zu den Amiden (III) umgelagert.
ChemInform Abstract: STUDY ON SUBSTANCES OF ANTIVIRAL ACTIVITY. PART XVIII. BISAMIDINOHYDRAZONES OF N‐HETEROCYCLIC AROMATIC DIALDEHYDES
Authors: GARUTI L. , FERRANTI A. , GIOVANNINETTI G. , BASERGA M. , MANNINI PALENZONA A. 
Published: April 2016

AbstractDurch Umsetzung entsprechender Dialdehyde mit Aminoguanidin erhält man die Amidinohydrazone (I)‐(VI), von denen lediglich die Indol‐Derivate (III) und (IV) eine geringe Wirkung gegen Herpes Simplex Virus‐1(MP) besitzen.
ChemInform Abstract: SYNTHESIS APPLICATIONS OF AZA‐COPE REARRANGEMENTS. STEREOSELECTIVE SYNTHESIS OF CIS‐3A‐ARYLOCTAHYDROINDOLES AND A NEW SHORT ENTRY TO AMARYLLIDACEAE ALKALOIDS
Authors: OVERMAN L. E. , MENDELSON L. T. 
Published: April 2016

AbstractKondensation der Aminocyclopentanone (Ia) bzw. (Ib) mit den Li‐Styrolen (IIa) bzw. (IIb) gibt die diastereomeren Aminoalkohole (IIIa)/(IVa) bzw. (IIIb)/(IVb).
ChemInform Abstract: SYNTHESIS OF THE LEFT‐HAND SEGMENT OF THE ANTITUMOR AGENT CC‐1065
Authors: WIERENGA W. 
Published: April 2016

AbstractDie Synthese des Cyclopropanopyrroloindol‐Segmentes (XI) der Antitumor‐Substanz CC‐1065 (XII) wird beschrieben.
ChemInform Abstract: 1,2‐OXATHIOLAN. GAS‐PHASE THERMOLYSES
Authors: CARLSEN L. , ESGAARD H. , WHITHAM G. H. , HARPP D. N. 
Published: April 2016

AbstractDie Vakuumpyrolyse des Hydroxypropylthio‐phthalimids (I) ergibt das Oxathiolan (II), bei dessen Vakuum‐Blitzpyrolyse der Allylalkohol (III) und Acrolein (IV) entstehen.
ChemInform Abstract: INTERACTION OF SALTS OF DITHIOCARBAMIC ACIDS WITH 4‐SUBSTITUTED 2‐THIOLENE‐ AND 3,4‐DISUBSTITUTED THIOLANE 1,1‐DIOXIDES. STRUCTURAL STUDIES OF N‐PHENYLTHIOLANO(3,4‐D)THIAZOLIDINE‐2‐THIONE 5,5‐DIOXIDE
Authors: BEZMENOVA T. E. , KHASKIN G. I. , SLUTSKII V. I. , DUL'NEV P. G. , ZAKHAROV L. N. , KULISHOV V. I. , STRUCHKOV YU. T. 
Published: April 2016

Abstract3,4‐Disubstituierte′ Thiolandioxide (I)′öder 4‐substituierte Thiolendioxide (II) reagieren mit Dithiocarbaminaten (III) über die Zwischenstufe (IV) zu Thiolano‐thiazolidin‐thion‐dioxiden (V).
ChemInform Abstract: MICHAEL‐REACTION WITH 7‐HYDROXY‐3‐CARBETHOXYCOUMARIN
Authors: HASSAN M. A. , AL‐DEEK M. , EL‐BORAI M. 
Published: April 2016

AbstractDie Umsetzung des Cumarinderivats (III) mit Ketonen unter verschiedenen Reaktionsbedingungen liefert die Michael‐Addukte (I), (V)‐(X).
ChemInform Abstract: SYNTHESES OF SOME AMINOPIPERIDINECARBOXYLIC ACIDS RELATED TO NIPECOTIC ACID
Authors: JACOBSEN P. , SCHAUMBURG K. , LARSEN J.‐J. , KROGSGAARD‐LARSEN P. 
Published: April 2016

AbstractHydrierung der Aminonicotinsäure (I) liefert je nach Reaktionsbedingungen 1. [nach Umsetzung mit dem Chlorameisensäureester (II)] die Produkte (III) (isoliert als Acetat) + (IVa) + (IVb) + (IVc) bzw. 2. als ausschließliches Produkt die Verbindung (VI).
ChemInform Abstract: SYNTHESIS OF 2‐TRIFLUOROMETHYLQUINOLINES
Authors: MONTI D. , GRAMATICA P. , MANITTO P. 
Published: April 2016

AbstractDas Brom‐chinolin (I) reagiert mit Butyl‐Lithium/Dimethylformamid zum Aldehyd (II), der mit Nitro‐ethan zum Nitropropylen‐chjnolin (III) kondensiert werden kann.
ChemInform Abstract: NEW PHARMACOLOGICALLY ACTIVE 2‐PHENYL‐PYRAZOLO(1,5‐A)PYRIMIDINES
Authors: PECORI VETTORI L. , CECCHI L. , COSTANZO A. , AUZZI G. , BRUNI F. 
Published: April 2016

AbstractPhenyl‐aminopyrazol (II) wird mit Estern bzw. Acetalen zu den Pyrazolo‐pyrimidinen (I), (III), (IV) und (VI) kondensiert.
ChemInform Abstract: THE PREPARATION OF THE BENZO(4,5)CYCLOHEPTA(1,2‐B)PYRAZINE AND BENZO(4,5)CYCLOHEPTA(1,2‐B)QUINOXALINE SYSTEMS
Authors: EBERLE M. K. , KAHLE G. G. 
Published: April 2016

Abstract4,5‐Benzotropolon (I) reagiert mit o‐Phenylen‐ diamin (II) zum Kondensationsprodukt (III); in gleicher Weise reagieren 1,2‐Diaminocyclohexan (IV) und Ethylendiamin (VI) zu Kondensationsprodukten (V) bzw. (VIIa); letzteres kann alkalisch zu (VIIb) methyliert werden.
ChemInform Abstract: THE SYNTHESIS OF “STRETCHED‐OUT” ANALOGS OF LUMAZINE, 6,7‐DIMETHYLLUMAZINE AND 2‐AMINO‐5,6,7,8‐TETRAHYDRO‐6,7‐DIMETHYL‐4‐PTERIDINONE
Authors: SCHNELLER S. W. , CHRIST W. J. 
Published: April 2016

AbstractBei der Kondensation des o‐Phenylendiamins (I) mit Glyoxal bzw. Diacetyl entstehen die Verbindungen (IIa) bzw. (IIb) die mit Harnstoff (III) zu den Pyrazinochinazolindionen (IV) kondensiert werden.
ChemInform Abstract: SYNTHESES OF SOME 2‐HYDROXYPYRAZINE 1‐OXIDES
Authors: OHTA A. , MASANO S. , TSUTSUI M. , YAMAMOTO F. , SUZUKI S. , MAKITA H. , TAMAMURA H. , AKITA Y. 
Published: April 2016

AbstractAus den Pyrazinen (I) bzw. (IV) erhält man bei der Oxidation die entsprechenden N‐Oxide (II) bzw. (V), die mit Alkali zu den N‐Hydroxy‐2‐oxo‐Verbindungen (III) bzw. (VI) führen.
ChemInform Abstract: RESEARCH ON TUMOR INHIBITING COMPOUNDS. PART LXV. SYNTHESES OF NITRO‐10,11‐DIHYDRO‐5H‐DIBENZ(B,F)AZEPINES AND THEIR DERIVATIVES
Authors: HOROWSKA B. , LEDOCHOWSKI A. 
Published: April 2016

AbstractDie Synthese der 10,11‐Dihydro‐5H‐ dibenz[b,f]azepine (II),(III) und (V)‐(XI) wird beschrieben.
ChemInform Abstract: SYNTHESIS AND X‐RAY CRYSTAL STRUCTURES OF THREE ISOMERIC MACROBICYCLIC POLYETHERS HAVING SIMILAR MELTING POINTS AND DIFFERENT COMPLEXING POWER FOR ALKALI METAL CATIONS
Authors: BANDY J. A. , PARSONS D. G. , TRUTER M. R. 
Published: April 2016

AbstractDurch Hydrierung des Dibenzo[14]krone‐4‐cis‐diols (I) in Gegenwart eines Ruthenium‐Katalysators erhält man ein Gemisch der isomeren Diole (II)‐(IV), die mit dem Ditosylat (V) in die entsprechenden überbrückten makrocyclischen Polyether übergeführt werden.
ChemInform Abstract: RING ENLARGEMENT BY (2,3)SIGMATROPIC REARRANGEMENT OF CYCLIC SULFONIUM YLIDES. 2. CONFORMATIONAL CONTROL OF PRODUCT STEREOCHEMISTRY
Authors: CERE V. , PAOLUCCI C. , POLLICINO S. , SANDRI E. , FAVA A. 
Published: April 2016

AbstractAus den cyclischen Sulfonium‐Salzen (I) bzw. (IV), deren Herstellung beschrieben ist, erhält man bei der Behandlung mit tert.‐Butylat unter Ringerweiterung die makrocyclischen Thiaalkene (II) und (III) bzw. (V) und (VI), deren Bildung in Relation zur Struktur ausführlich untersucht und diskutiert wird.
ChemInform Abstract: N21,N22 CIS‐BRIDGED TETRAARYLPORPHYRINS FROM OXIDATION OF TETRAARYLPORPHINATOIRON(II)‐CARBENE COMPLEXES
Authors: WISNIEFF T. J. , GOLD A. , EVANS S. A. JUN. 
Published: April 2016

AbstractDer nach bekannter Methode aus 1,1,1‐Trichlor‐2,2‐ bis‐(p‐chlorphenyl)‐ethan und Tetraanisylporphinatoeisen(II)‐chlorid in Gegenwart von Fe‐Pulver erhaltene Carbenkomplex (I) liefert bei Oxidation mit F eC13 im Überschuß das Titelbrückenporphyrin (III).
ChemInform Abstract: OXIDATIVE ADDITION OF ALLYL ACETATE TO PALLADIUM(0) COMPLEXES
Authors: YAMAMOTO T. , SAITO O. , YAMAMOTO A. 
Published: April 2016

AbstractDie Allyl‐O‐Bindung von Allylacetaten wird durch Pd(0)‐Verbindungen unter Bildung von n3 ‐Al1ylacetato‐Pd(II)‐ Intermediärkomplexen aktiviert.
ChemInform Abstract: SYNTHESIS OF THE ISOBACTERIOCHLORIN MACROCYCLE: A PHOTOCHEMICAL APPROACH
Authors: HARRISON P. J. , FOOKES C. J. R. , BATTERSBY A. R. 
Published: April 2016

AbstractDie Verbindungen (I) und (II) reagieren zu den seco‐Verbindungen (III), die photolytisch zu den Isobacteriochlorinen (IV) cyclisiert werden.