bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modification of Extended Open Frameworks with Fluorescent Tags for Sensing Explosives: Competition between Size Selectivity and Electron Deficiency
Authors: Gole Bappaditya , Bar Arun Kumar , Mukherjee Partha Sarathi 
Published: January 2014

AbstractThree new electron‐rich metal–organic frameworks (MOF‐1–MOF‐3) have been synthesized by employing ligands bearing aromatic tags. The key role of the chosen aromatic tags is to enhance the π‐electron density of the luminescent MOFs. Single‐crystal X‐ray structures have revealed that these MOFs form three‐dimensional porous networks with the aromatic tags projecting inwardly into the pores. These highly luminescent electron‐rich MOFs have been successfully utilized for the detection of explosive nitroaromatic compounds (NACs) on the basis of fluorescence quenching. Although all of the prepared MOFs can serve as sensors for NACs, MOF‐1 and MOF‐2 exhibit superior sensitivity towards 4‐nitrotoluene (4‐NT) and 2,4‐dinitrotoluene (DNT) compared to 2,4,6‐trinitrotoluene (TNT) and 1,3,5‐trinitrobenzene (TNB). MOF‐3, on the other hand, shows an order of sensitivity in accordance with the electron deficiencies of the substrates. To understand such anomalous behavior, we have thoroughly analyzed both the steady‐state and time‐resolved fluorescence quenching associated with these interactions. Determination of static Stern–Volmer constants (KS) as well as collisional constants (KC) has revealed that MOF‐1 and MOF‐2 have higher KS values with 4‐NT than with TNT, whereas for MOF‐3 the reverse order is observed. This apparently anomalous phenomenon was well corroborated by theoretical calculations. Moreover, recyclability and sensitivity studies have revealed that these MOFs can be reused several times and that their sensitivities towards TNT solution are at the parts per billion (ppb) level.
Hydrosilylation Induced by N→Si Intramolecular Coordination: Spontaneous Transformation of Organosilanes into 1‐Aza‐Silole‐Type Molecules in the Absence of a Catalyst
Authors: Novák Miroslav , Dostál Libor , Alonso Mercedes , De Proft Frank , Růžička Aleš , Lyčka Antonín , Jambor Roman 
Published: January 2014

AbstractOur attempts to synthesize the N→Si intramolecularly coordinated organosilanes Ph2L1SiH (1 a), PhL1SiH2 (2 a), Ph2L2SiH (3 a), and PhL2SiH2 (4 a) containing a CHN imine group (in which L1 is the C,N‐chelating ligand {2‐[CHN(C6H3‐2,6‐iPr2)]C6H4}− and L2 is {2‐[CHN(tBu)]C6H4}−) yielded 1‐[2,6‐bis(diisopropyl)phenyl]‐2,2‐diphenyl‐1‐aza‐silole (1), 1‐[2,6‐bis(diisopropyl)phenyl]‐2‐phenyl‐2‐hydrido‐1‐aza‐silole (2), 1‐tert‐butyl‐2,2‐diphenyl‐1‐aza‐silole (3), and 1‐tert‐butyl‐2‐phenyl‐2‐hydrido‐1‐aza‐silole (4), respectively. Isolated organosilicon amides 1–4 are an outcome of the spontaneous hydrosilylation of the CHN imine moiety induced by N→Si intramolecular coordination. Compounds 1–4 were characterized by NMR spectroscopy and X‐ray diffraction analysis. The geometries of organosilanes 1 a–4 a and their corresponding hydrosilylated products 1–4 were optimized and fully characterized at the B3LYP/6‐31++G(d,p) level of theory. The molecular structure determination of 1–3 suggested the presence of a SiN double bond. Natural bond orbital (NBO) analysis, however, shows a very strong donor–acceptor interaction between the lone pair of the nitrogen atom and the formal empty p orbital on the silicon and therefore, the calculations show that the SiN bond is highly polarized pointing to a predominantly zwitterionic Si+N− bond in 1–4. Since compounds 1–4 are hydrosilylated products of 1 a–4 a, the free energies (ΔG298), enthalpies (ΔH298), and entropies (ΔH298) were computed for the hydrosilylation reaction of 1 a–4 a with both B3LYP and B3LYP‐D methods. On the basis of the very negative ΔG298 values, the hydrosilylation reaction is highly exergonic and compounds 1 a–4 a are spontaneously transformed into 1–4 in the absence of a catalyst.
Perkin’s and Caro’s Mauveine in Queen Victoria’s Lilac Postage Stamps: A Chemical Analysis
Authors: Conceição Oliveira Maria da , Dias Ana , Douglas Peter , Seixas de Melo J. Sérgio 
Published: January 2014

AbstractMauveine, a chemical icon, is no longer commercially available. If nowadays one wanted to have a sample of the original Perkin, or Caro, mauveine, and see its colour, where would one find it? The answer is on UK Victorian 6d postage stamps from 1867–1880. This was found from a comparison with historical samples of mauveine, from both William Perkin and a Heinrich Caro sample (here analysed for the first time). These have distinctly different compositions and this was used to identify the origin of mauveine in the postage stamps, with evidence found for mauveine made by both Perkin’s and Caro’s synthesis.
Coordination Chemistry of Cyclopropenylidene‐Stabilized Phosphenium Cations: Synthesis and Reactivity of Pd and Pt Complexes
Authors: Kozma Ágnes , Deden Tobias , Carreras Javier , Wille Christian , Petuškova Jekaterina , Rust Jörg , Alcarazo Manuel 
Published: January 2014

AbstractA straightforward synthesis of cyclopropenylidene‐stabilized phosphenium cations 1 a–g through the reaction of [(iPr2N)2C3+Cl]BF4 with secondary phosphines is described. Their donor ability was evaluated by analysis of the CO stretching frequency in Rh complexes [RhCl(CO)L2](BF4)2 and electrochemical methods. The cyclopropenium ring induces a phosphite‐type behavior that can be tuned by the other two substituents attached to the phosphorus atom. Despite of the positive charge that they bear, phosphenium cations 1 a–g still act as two‐electron donor ligands, forming adducts with PdII and PtII precursors. Conversely, in the presence of Pd0 species, an oxidative insertion of the Pd atom into the Ccarbene–phosphorus bond takes place, providing dimeric structures in which each Pd atom is bonded to a cyclopropenyl carbene while two dialkyl/diaryl phosphide ligands serve as bridges between the two Pd centers. The catalytic performance of the resulting library of PtII complexes was tested; all of the cationic phosphines accelerated the prototype 6‐endo‐dig cyclization of 2‐ethynyl‐1,1′‐biphenyl to afford pentahelicene. The best ligand 1 g was used in the synthesis of two natural products, chrysotoxene and epimedoicarisoside A.
Hybridization of a Flexible Cyclooctatetraene Core and Rigid Aceneimide Wings for Multiluminescent Flapping π Systems
Authors: Yuan Chunxue , Saito Shohei , Camacho Cristopher , Kowalczyk Tim , Irle Stephan , Yamaguchi Shigehiro 
Published: January 2014

AbstractThe hybridization of flexible and rigid π‐conjugated frameworks is a potent concept for producing new functional materials. In this article, a series of multifluorescent flapping π systems that combine a flexible cyclooctatetraene (COT) core and rigid aceneimide wings with various π‐conjugation lengths has been designed and synthesized, and their structure/properties relationships have been investigated. Whereas these molecules have a V‐shaped bent conformation in the ground state, the bent structure changes to a planar conformation in the lowest excited singlet (S1) state irrespective of the lengths of the aceneimide wings. However, the fluorescence behavior in solution is distinct between the naphthaleneimide system and the anthraceneimide system. The former has a nonemissive S1 state owing to the significant contribution of the antiaromatic character of the planar COT frontier molecular orbitals, thereby resulting in complete fluorescence quenching in solution. In contrast, the latter anthraceneimide system shows an intense emission, which is ascribed to the planar but distorted S1 state that shows the allowed transition between the π‐molecular orbitals delocalized over the COT core and the acene wings. The other characteristic of these π systems is the significantly redshifted fluorescence in the crystalline state relative to their monomer fluorescence. The relationship between the packing structures and the fluorescence properties was investigated by preparing a series of hybrid π systems with different sizes of substituents on the imide moieties, which revealed the effect of the twofold π‐stacked structure of the V‐shaped molecules on the large bathochromic shift in emission.
Total Synthesis of Chiriquitoxin, an Analogue of Tetrodotoxin Isolated from the Skin of a Dart Frog
Authors: Adachi Masaatsu , Imazu Takuya , Sakakibara Ryo , Satake Yoshiki , Isobe Minoru , Nishikawa Toshio 
Published: January 2014

AbstractThe first total synthesis of chiriquitoxin, the most structurally complex analogue of tetrodotoxin isolated from a Costa Rican dart frog, has been accomplished from a newly designed intermediate for a variety of tetrodotoxin derivatives. The synthesis includes the third total synthesis of tetrodotoxin in this laboratory, and its intermediate was transformed into chiriquitoxin by a stereocontrolled aldol reaction with a D‐camphor‐derived lactone for installation of the unique side chain, and a new deprotection of methylthiomethyl (MTM) ether by using a Pummerer rearrangement.
Plasmonic Nanobiosensor with Chain Reaction Amplification Mechanism
Authors: Recco Lucas C. , Tokarev Ihor , Minko Sergiy , Pedrosa Valber A. 
Published: January 2014

AbstractHerein we demonstrate a plasmonic nanobiosensor that explores chain reaction amplification mechanisms to transduce chemical signals released in biocatalytic reactions, turning optical signals into a visual spectral range. The sensor has a very simple design: gold nanoparticles resting in the surface of a grafted P2VP film. Changes in the gold nanoparticles’ position causes changes in the plasmon coupling mode. This is detected by means of a maximum absorbance shift.
ChemInform Abstract: Gold Network Structures in Rhombohedral and Monoclinic Sr2Au6(Au,T)3 (T: Zn, Ga). A Transition via Relaxation.
Authors: Mishra Trinath , Lin Qisheng , Corbett John D. 
Published: January 2014

AbstractSr2Au6(Au3‐xMx) (M: Zn, Ga) samples with 1 ≤ x ≤ 3 are prepared by reaction of the elements (sealed Ta tubes, 800 °C, 10 h).
ChemInform Abstract: Color‐Tunable and White Luminescence Properties via Energy Transfer in Single‐Phase KNaCa2(PO4)2:A (A: Ce3+, Eu2+, Tb3+, Mn2+, Sm3+) Phosphors.
Authors: Geng Dongling , Shang Mengmeng , Zhang Yang , Lian Hongzhou , Lin Jun 
Published: January 2014

AbstractThe title phosphors are synthesized by a Pechini‐type sol—gel method followed by calcination in air at 950 °C for 4 h.
ChemInform Abstract: From REZnSn to REZnSnH1.5 (RE: Pr, Nd) — Inducing Ferromagnetism Through Hydrogenation.
Authors: Reker Bastian , Chevalier Bernard , Niehaus Oliver , Rodewald Ute Ch. , Poettgen Rainer 
Published: January 2014

AbstractPolycrystalline PrZnSn (I) and NdZnSn (II) are prepared by induction melting of the elements in sealed tantalum tubes (1.
ChemInform Abstract: Magnetic Structure and Electromagnetic Properties of LnCrAsO with a ZrCuSiAs‐Type Structure (Ln: La, Ce, Pr, and Nd).
Authors: Park Sang‐Won , Mizoguchi Hiroshi , Kodama Katsuaki , Shamoto Shin‐ichi , Otomo Toshiya , Matsuishi Satoru , Kamiya Toshio , Hosono Hideo 
Published: January 2014

AbstractLnCrAsO (Ln: La, Ce, Pr, Nd) is prepared by solid state reaction of stoichiometric mixtures of LnAs, Cr, and Cr2O3 (evacuated silica tube, 1273 K, 20 h).
ChemInform Abstract: Slow Spin Dynamics Between Ferromagnetic Chains in a Pure‐Inorganic Framework.
Authors: David Renald , Kabbour Houria , Colis Silviu , Mentre Olivier 
Published: January 2014

AbstractThe new compound BaCo2 (As3O6)2·2H2O is prepared from a mixture of BaCO3, CoCl2, As2O3, H2O, and N2H4 (autoclave, 493 K, 72 h) and characterized by single crystal XRD, magnetic measurements, and DFT calculations.
ChemInform Abstract: The System Ba—Zn—Sn at 500 °C: Phase Equilibria, Crystal and Electronic Structure of Ternary Phases.
Authors: Romaka V. V. , Falmbigl M. , Grytsiv A. , Rogl P. 
Published: January 2014

AbstractPhase relations in the Ba‐poor part of the ternary Ba—Zn—Sn system at 500 °C are established by arc melting of the elements with an excess of Ba of 3 wt% (1.
ChemInform Abstract: Mechanistic Study of the Rhodium‐Catalyzed [3 + 2 + 2] Carbocyclization of Alkenylidenecyclopropanes with Alkynes.
Authors: Yu Haizhu , Lu Qianqian , Dang Zhimin , Fu Yao 
Published: January 2014

AbstractTwo different mechanisms of the reaction are investigated by theoretical calculations using density functional theory.
ChemInform Abstract: Discovery of Neuritogenic Compound Classes Inspired by Natural Products.
Authors: Dakas Pierre‐Yves , Parga Juan A. , Hoeing Susanne , Schoeler Hans R. , Sterneckert Jared , Kumar Kamal , Waldmann Herbert 
Published: January 2014

AbstractTwo novel neuritogenic compound classes are accessible based on an enantioselective [3+2]‐annulation of cyclopentenones with allene‐derived zwitterions.
ChemInform Abstract: Silver‐Catalyzed Intramolecular Hydroamination of Alkynes with Trichloroacetimidates.
Authors: Wong Valerie H. L. , Hor T. S. Andy , Hii King Kuok 
Published: January 2014

AbstractThe title reaction is achieved for the first time, whereby the nature of the counterion, solvent, and ligand are found to have profound effects on catalytic turnover and selectivity.
ChemInform Abstract: Highly Diastereoselective Radical Cyclizations of Chiral Sulfinimines.
Authors: Rochette Elise M. , Lewis William , Dossetter Al G. , Stockman Robert A. 
Published: January 2014

AbstractA tin hydride and AIBN mediated intramolecular cyclization of alkyl and aryl radicals derived from halides and chiral sulfinimines is presented.
ChemInform Abstract: C—H Modification of 2‐Azaadamantane: Synthesis of C5‐Functionalized Azados for Advanced Use.
Authors: Sasano Yusuke , Nishiyama Tomohiro , Tomizawa Masaki , Shibuya Masatoshi , Iwabuchi Yoshiharu 
Published: January 2014

AbstractTwo substituted 2‐aza‐adamantane N‐oxyls of type ADAB are prepared and tested as catalysts for the oxidation of alcohols.
ChemInform Abstract: A Highly Active Cyclometallated Iridium Catalyst for the Hydrogenation of Imines.
Authors: Villa‐Marcos Barbara , Tang Weijun , Wu Xiaofeng , Xiao Jianliang 
Published: January 2014

AbstractThe novel catalyst is highly active and selective for imino bonds, with a wide variety of imines being hydrogenated in less than 1 hour.
ChemInform Abstract: An Efficient Oxidative Cross‐Coupling Reaction Between C—H and N—H Bonds. A Transition‐Metal‐Free Protocol at Room Temperature.
Authors: Wu Yinuo , Kwong Fuk Yee , Li Pengfei , Chan Albert S. C. 
Published: January 2014

AbstractThe DDQ promoted oxidative coupling of 1,3‐diarylpropenes with N‐heterocycles and amines provides allylic amines under mild reaction conditions.
ChemInform Abstract: Reactions of Epoxides with 3,3,4,4‐Tetraethoxybut‐1‐yne Acetylide: Selective Formation of Propargylic and Homopropargylic Alcohols.
Authors: Holmelid Bjarte , Sydnes Leiv K. 
Published: January 2014

AbstractPropargylic alcohols (III) are obtained via an oxirane to aldehyde rearrangement before the addition of the acetylide takes place.
ChemInform Abstract: Free‐Radical Variant for the Synthesis of Functionalized 1,5‐Diketones.
Authors: Goh Kelvin Kau Kiat , Kim Sunggak , Zard Samir Z. 
Published: January 2014

AbstractThis effective method allows the facile and direct preparation of various functionalized diketones, which can be used for the synthesis of fused pyridine derivatives.
ChemInform Abstract: Metal‐Free Direct C—H Perfluoroalkylation of Arenes and Heteroarenes Using a Photoredox Organocatalyst.
Authors: Cui Lei , Matusaki Yoko , Tada Norihiro , Miura Tsuyoshi , Uno Bunji , Itoh Akichika 
Published: January 2014

AbstractThe best results are obtained when the irradiation is carried out with only one lamp instead of four lamps.
ChemInform Abstract: Asymmetric Aminocatalytic Michael Addition of Cyclopropane‐Containing Aldehydes to Nitroalkenes.
Authors: Reitel Kaert , Lippur Kristin , Jaerving Ivar , Kudrjasova Marina , Lopp Margus , Kanger Tonis 
Published: January 2014

AbstractOptimized conditions allow the synthesis of Michael adducts (III) with high enantioselectivity.
ChemInform Abstract: Synthesis of Z‐Alkenes from Rh(I)‐Catalyzed Olefin Isomerization of β,γ‐Unsaturated Ketones.
Authors: Zhuo Lian‐Gang , Yao Zhong‐Ke , Yu Zhi‐Xiang 
Published: January 2014

AbstractThe title synthesis is applicable for a broad range of aromatic and aliphatic substituted ketones.
ChemInform Abstract: Preparation of α‐Imino Aldehydes by [1,3]‐Rearrangements of O‐Alkenyl Oximes.
Authors: Kontokosta Dimitra , Mueller Daniel S. , Wang Heng‐Yen , Anderson Laura L. 
Published: January 2014

AbstractThe α‐imino aldehydes obtained after the rearrangement reaction can also be directly converted to imino esters (VI) and (VII) by a subsequent Horner‐Wadsworth‐Emmons olefination.
ChemInform Abstract: Simple and Stereocontrolled Preparation of Benzoylated Phenylalanine Using Friedel—Crafts Reaction in Trifluoromethanesulfonic Acid for Photoaffinity Labeling.
Authors: Murai Yuta , Wang Lei , Muto Yasuyuki , Sakihama Yasuko , Hashidoko Yasuyuki , Hatanaka Yasumaru , Hashimoto Makoto 
Published: January 2014

AbstractThe stereocontrolled Friedel‐Crafts benzoylation of chiral phenylalanine derivatives is described.
ChemInform Abstract: γ‐Substituted Butanolides from Cyclopropane Hemimalonates: An Expedient Synthesis of Natural (R)‐Dodecan‐4‐olide (IX).
Authors: Grover Huck K. , Emmett Michael R. , Kerr Michael A. 
Published: January 2014

AbstractThis efficient approach affords a wide range of different substituted lactone derivatives via a tandem cyclopropane hemimalonate reorganization/dealkoxycarbonylation reaction sequence.
ChemInform Abstract: Highly Active Catalysts of Bisphosphine Oxides for Asymmetric Heck Reaction.
Authors: Hu Jian , Lu Yunpeng , Li Yongxin , Zhou Jianrong 
Published: January 2014

AbstractThe utilization of chiral biphosphine oxides as ligand in asymmetric heck reactions of cycloalkenes, furanes, pyranes, and pyrrol systems is presented.
ChemInform Abstract: Synthesis and Photophysical Properties of Push—Pull Structures Incorporating Diazines as Attracting Part with a Fluorene Core.
Authors: Denneval Charline , Moldovan Oana , Baudequin Christine , Achelle Sylvain , Baldeck Patrice , Ple Nelly , Darabantu Mircea , Ramondenc Yvan , Darabantu Mircea , Ramondenc Yvan 
Published: January 2014

AbstractSeveral new push—pull fluorene derivatives such as (IV), (VI), and (VII) are prepared in order to test their photophysical properties.
ChemInform Abstract: The Di‐t‐butylsilylene Protecting Group as a Bridging Unit in Linear and Macrocyclic Bis‐Malonates for the Regioselective Multifunctionalization of C60.
Authors: Guerra Sebastiano , Trinh Thi Minh Nguyet , Schillinger Franck , Muhlberger Lucie , Sigwalt David , Holler Michel , Nierengarten Jean‐Francois 
Published: January 2014

AbstractThis describes the functionalization of fullerenes by double Bingel cyclopropanation reaction with tethered bis‐malonates.
ChemInform Abstract: Enantioselective Construction of Spirooxindole Derivatives: Asymmetric [3 + 2] Cyclization of Isothiocyanatooxindoles with Allenic Esters or 2‐Butynedioic Acid Diesters.
Authors: Du Dan , Jiang Yu , Xu Qin , Shi Min 
Published: January 2014

AbstractThe reactions are catalyzed by a novel Cinchona alkaloid‐derived organocatalyst and different spirocyclic products are obtained depending on the reaction conditions and the ratios of reagents.
ChemInform Abstract: Application of Sulfuryl Chloride for the Quick Construction of β‐Chlorotetrahydrofuran Derivatives from Homoallylic Alcohols under Mild Conditions.
Authors: Zeng Xianghua , Miao Chengxia , Wang Shoufeng , Xia Chungu , Sun Wei 
Published: January 2014

AbstractThe 5‐endo chlorocycloetherification proceeds rapidly under catalyst‐free‐conditions to give β‐chlorotetrahydrofurans in high yields.
ChemInform Abstract: Imidazolium‐Salt‐Functionalized Ionic‐CNT‐Supported Ru—Carbene/Palladium Nanoparticles for Recyclable Tandem Metathesis/Hydrogenation Reactions in Ionic Liquids.
Authors: Lee Sujin , Shin Ju Yeon , Lee Sang‐gi 
Published: January 2014

AbstractRuthenium carbene and palladium nanoparticles are immobilized onto the same imidazolium‐functionalized ionic carbon nanotubes and the catalyst is showing high effectivity in tandem metathesis/hydrogenation reaction in an ionic liquid.
ChemInform Abstract: The Preparation of Various New Heterocyclic Compounds via Cyclization of Substituted Derivatives of Phenacyl Esters of Hydrazonoacetic Acid.
Authors: Melnicky Radek , Grepl Martin , Lycka Antonin , Bertolasi Valerio , Kvapil Lubomir , Dvorakova Barbora , Hradil Pavel 
Published: January 2014

AbstractThe acid‐mediated Fischer‐indole synthesis type cyclization of hydrazones (I) and (V) is studied resulting in the formation of indoles (II) and (VI).
ChemInform Abstract: An Organocatalytic Asymmetric Sequential Allylic Alkylation—Cyclization of Morita—Baylis—Hillman Carbonates and 3‐Hydroxyoxindoles.
Authors: Wang Qi‐Lin , Peng Lin , Wang Fei‐Ying , Zhang Ming‐Liang , Jia Li‐Na , Tian Fang , Xu Xiao‐Ying , Wang Li‐Xin 
Published: January 2014

AbstractThe first organocatalytic asymmetric cyclization of the title compounds is presented.
ChemInform Abstract: Reactions of Some Pyrazole‐3‐carboxylic Acids and Carboxylic Acid Chlorides with Various O‐ and N‐Nucleophiles.
Authors: Ilhan Ilhan Oezer , Caglayan Ayse , Oenal Zuelbiye , Akkoc Senem , Cadir Mehmet 
Published: January 2014

AbstractConvenient methods for the efficient synthesis of previously unknown pyrazole‐3‐hydrazides, pyrazolo‐[3,4‐d]pyradizin‐ones, pyrazole‐3‐carboxylates, pyrazole‐3‐carboxamide, and pyrazole‐3‐urea derivatives are developed.
ChemInform Abstract: Synthesis, Characterization and Antiinflammatory Activity of Novel Pyrazolyl Ketoamides.
Authors: Mahaveer P. , Kulkarni R. G. , Radakrishna P. , Chandrashekar V. M. , Achaiah G. 
Published: January 2014

AbstractThe title compounds (IV) are obtained by coupling of 5‐aminopyrazole with substituted α‐keto acids and screened for their antiinflammatory activities.
ChemInform Abstract: Intramolecular Arylation of Amino Acid Enolates.
Authors: Atkinson Rachel C. , Leonard Daniel J. , Maury Julien , Castagnolo Daniele , Volz Nicole , Clayden Jonathan 
Published: January 2014

AbstractThe treatment of 1‐cyanoethyl ureas (I) with sBuLi leads to iminohydantoins (II) as a result of an aryl migration and a cyclization.
ChemInform Abstract: Ionic Liquid Mediated Synthesis of Some Novel Fluoro Isoxazolidine and Isoxazoline Derivatives Using N‐Benzyl Fluoro Nitrone via Cycloaddition Reaction and Their Antimicrobial Activities.
Authors: Chakraborty Bhaskar , Samanta Amalesh , Luitel Govinda Prasad , Khatun Nasima 
Published: January 2014

AbstractThe compounds (IVb), (Vb), and (VIIb) show good inhibition against some bacterial cell‐lines (Shigella dysentery 1 and Pseudomonas AMRI 100) compared to the standard Amoxicillin.
ChemInform Abstract: Regioselective Conjugate Addition of Nitriles to α,β‐Unsaturated Imines: Synthesis of Fluorinated Primary Enamines and 2‐Aminopyridine Derivatives.
Authors: Fernandez de Troconiz Guillermo , Ochoa de Retana Ana M. , Pascual Sergio , Ezpeleta Jose M. , Palacios Francisco 
Published: January 2014

AbstractBase‐mediated treatment of the imines (I) with the nitriles (I) and (V) is found to allow convenient and regioselective formation of stable primary enamines.
ChemInform Abstract: Tungstophosphoric Acid Catalyzed Synthesis of N‐Sulfonyl‐1,2,3,4‐tetrahydroisoquinoline Analogues
Authors: Pingaew Ratchanok , Prachayasittikul Supaluk , Ruchirawat Somsak , Prachayasittikul Virapong 
Published: January 2014

Abstractvia a modified Pictet—Spengler reaction
ChemInform Abstract: 7,9,12b‐Triazabenzo[a]aceanthrylen‐8‐one, the First Representative of a Novel Pentacyclic Ring System and Its Biological Activities.
Authors: Puzik Andreas , Bracher Franz 
Published: January 2014

AbstractThe novel canthin‐4‐one derivative (VI) bearing an annulated pyridine ring is synthetically accessible by a four‐step approach and shows selective cytotoxic activity against Gram‐positive bacteria.