bluuebunny/crossref_metadata_2025_split huggingface dataset:
Glycosyl‐Templated Chiral Helix Stapling of Ethynylpyridine Oligomers by Alkene Metathesis between Inter‐Pitch Side Chains
Authors: Abe Hajime , Kayamori Fumihiro , Inouye Masahiko 
Published: May 2015

AbstractEthynylpyridine polymers and oligomers consisting of 4‐substituted pyridine rings linked by acetylene bonds at the 2‐ and 6‐positions have been investigated. Ethynylpyridine oligomers covalently linked with a glycosyl chiral template form chiral helical complexes by intramolecular hydrogen bonding, in which the chirality of the template is translated to the helix. With a view to fixation of the chiral architecture, D/L‐galactosyl‐ and D/L‐mannosyl‐linked ethynylpyridine oligomers have been developed with 4‐(3‐butenyloxy)pyridine units having alkene side chains. The helical structures are successfully stapled by alkene metathesis of the side chains. Subsequent removal of the chiral templates by acidolysis produces template‐free stapled oligomers. The chiral, template‐free, stapled oligomers show chiral helicity, which is resistant to polar solvents and heating.
Nucleophilic β‐Carbon Activation of Propionic Acid as a 3‐Carbon Synthon by Carbene Organocatalysis
Authors: Jin Zhichao , Jiang Ke , Fu Zhenqian , Torres Jaume , Zheng Pengcheng , Yang Song , Song Bao‐An , Chi Yonggui Robin 
Published: May 2015

AbstractDirect β‐carbon activation of propionic acid (C2H5CO2H) by carbene organocatalysis has been developed. This activation affords the smallest azolium homoenolate intermediate (without any substituent) as a 3‐carbon nucleophile for enantioselective reactions. Propionic acid is an excellent raw material because it is cheap, stable, and safe. This approach provides a much better solution to azolium homoenolate synthesis than the previously established use of acrolein (enal without any substituent), which is expensive, unstable, and toxic.
f‐Block Ansa Complexes in the Solid State: [3]Thoro‐ and [3]Uranocenophanes
Authors: Braunschweig Holger , Celik Mehmet Ali , Dück Klaus , Hupp Florian , Krummenacher Ivo 
Published: May 2015

AbstractThe preparation of [3]thoro‐ and [3]uranocenophanes, the first structurally authenticated ansa‐bridged complexes of actinocenes, is reported. Following a flytrap route, 1,2‐bis(cyclooctatetraenyldimethylsilyl)methane was synthesized, reduced to its tetraanion, and subsequently converted into bridged uranocene and thorocene complexes by salt metathesis with the corresponding actinide tetrachlorides. In addition, their electronic structures have been investigated by experimental (UV/Vis spectroscopy, cyclic voltammetry) and theoretical (DFT) methods.
ChemInform Abstract: An 18‐Electron System Containing a Superheavy Element: Theoretical Studies of Sg@Au12.
Authors: Cao Guo‐Jin , Schwarz W. H. Eugen , Li Jun 
Published: May 2015

AbstractWith reference to the high‐symmetric structure and significant stability of M@Au12 cage molecules (M = group 6 transition element), the geometric and electronic structures as well as bonding of various Sg@Au12 isomers are investigated by DFT (PW91, PBE, B3LYP) and wave function theory (MP2, CCSD(T)) approaches.
ChemInform Abstract: A High‐Pressure Polymorph of Phosphorus Oxonitride with the Coesite Structure.
Authors: Baumann Dominik , Niklaus Robin , Schnick Wolfgang 
Published: May 2015

AbstractThe title high‐pressure PON polymorph is obtained from cristobalite‐type PON by high‐temp, high‐pressure treatment (multianvil cell, 1300 °C, 15.5 GPa, 1 h).
ChemInform Abstract: CePd2Al2, CePd3Al3, and CePd4Al4 — A New Homologous Series Built of CaBe2Ge2‐ and CsCl‐Type Units.
Authors: Tursina Anna , Khamitcaeva Emma , Gribanov Alexander , Gnida Daniel , Kaczorowski Dariusz 
Published: May 2015

AbstractCePd2Al2 (I), CePd3Al3 (II), CePd3.04Al2.96, CePd4Al4 (III), and CePd4.06Al3.94 are prepared by arc melting of the elements followed by annealing (evacuated quartz tubes, 1070 K, ≥ 30 d).
ChemInform Abstract: A New Look at the Structural Properties of Trisodium Uranate Na3UO4.
Authors: Smith Anna L. , et al.  
Published: May 2015

AbstractNa3UO4 is prepared by solid state reaction of pre‐heated, nearly stoichiometric UO2 and a mixture of Na2O and Na2O2 corresponding to a composition of Na2O1.14 (stainless steel container, 1073 K, 12 h, 1173 K, 24 h, and 1273 K, 24 h for the m, β, and α phases, resp.).
ChemInform Abstract: Rhombohedral Polytypes of the Layered Honeycomb Delafossites with Optical Brilliance in the Visible.
Authors: Roudebush John H. Roudebush John H. , Sahasrabudhe Girija , Bergman Susanna L. , Cava R. J. 
Published: May 2015

AbstractLime‐green Cu3Ni2SbO6 (I) and terracotta‐orange Cu3Co2SbO6 (II) are prepared via a topotactic reaction of layered α‐NaFeO2‐like precursors Na3Ni2SbO6 and Na3Co2SbO6 with CuCl (Al2O3 crucible in evacuated quartz tubes, 400 °C, 1 d).
ChemInform Abstract: Structural, Luminescence, and Electronic Properties of Potassium Holmium Cyclotetraphosphate KHoP4O12: Experiment and Theory.
Authors: Zhu Jing , Qian Wei , Zhu Zhongqi , Chen Hui 
Published: May 2015

AbstractSingle crystals of the new title compound are obtained by sintering of a mixture of K2CO3, Ho2O3, and NH4H2PO4 (corundum crucible, 673 K, 1 d; cooling to 373 K with a rate of 6 K/h).
ChemInform Abstract: Photoluminescent Thermometer Based on a Phase‐Transition Lanthanide Silicate with Unusual Structural Disorder.
Authors: Ananias Duarte , Paz Filipe A. Almeida , Yufit Dmitry S. , Carlos Luis D. , Rocha Joao 
Published: May 2015

AbstractNa[(Gd1‐xEux)SiO4] (x = 0.01, 0.4, 1), Na[(Gd0.8Tb0.1Eu0.1)SiO4], and Na[(Gd0.9Tb0.1)SiO4] are typically prepared by hydrothermal synthesis from a mixture of lanthanide (Ln) nitrates and an alkaline Na2SiO3 solution (autoclave, 518 K, 5 d).
ChemInform Abstract: Two‐Dimensional Mineral [Pb2BiS3][AuTe2]: High‐Mobility Charge Carriers in Single‐Atom‐Thick Layers.
Authors: Fang Lei , Im Jino , Stoumpos Constantinos C. , Shi Fengyuan , Dravid Vinayak , Leroux Maxime , Freeman Arthur J. , Kwok Wai‐Kwong , Chung Duck Young , Kanatzidis Mercouri 
Published: May 2015

AbstractSingle crystals of [Pb2BiS3][AuTe2], known as the naturally occurring mineral buckhornite, are grown by a self‐flux method using the elements in stoichiometric amounts (evacuated quartz tubes, 850 °C, 2 h; cooling to 650 °C within 3 d).
ChemInform Abstract: Recycling Application of Li—MnO2 Batteries as Rechargeable Lithium—Air Batteries.
Authors: Hu Yuxiang , Zhang Tianran , Cheng Fangyi , Zhao Qing , Han Xiaopeng , Chen Jun 
Published: May 2015

AbstractIn view on the potential recycling of depleted Li‐MnO2 cells as rechargeable Li‐air cells with admitted O2, mesoporous MnO2 is prepared using mesoporous silica (KIT‐6) as the template dispersed in an aqueous Mn(NO3)2 solution prior to drying, calcining in air (400 °C, 3 h), and template removal by KOH (60 °C).
ChemInform Abstract: A New Heterogeneous Photocatalyst Based on Wells—Dawson Polyoxometalate and Nickel Coordination Compounds: Synthesis, Structure and Property.
Authors: Zhang Lei , Shan Bingqian , Yang Hongxun , Wu Dongshuang , Zhu Rui , Nie Jianhang , Cao Rong 
Published: May 2015

AbstractThe new compound [Ni(bipy)3]3 [P2W18O62] is prepared by hydrothermal reaction of Na2WO4, NiCl2, bipy, and H3PO4 at pH 2.5‐3.0 (autoclave, 160 °C, 5 d).
ChemInform Abstract: Quinine Catalyzed Asymmetric Michael Additions in a Sustainable Solvent.
Authors: Castro‐Osma Jose A. , Comerford James W. , Heath Samantha , Jones Oliver , Morcillo Maria , North Michael 
Published: May 2015

AbstractDiethyl carbonate is found to be a suitable, sustainable solvent for the quinine‐catalyzed asymmetric Michael addition of malononitrile/α‐substituted malononitriles to enones.
ChemInform Abstract: Bisoxazoline‐Catalyzed Asymmetric Nucleophilic Addition of Diethyl Zinc to Fluorinated Alkyl Ketones: Enantiofacial Control by Changing the Bisoxazoline Substituent.
Authors: Sasaki Shigeru , Yamauchi Takayasu , Kanai Masatomi , Ishii Akihiro , Higashiyama Kimio 
Published: May 2015

AbstractOptimum reaction conditions (structure of catalyst, solvent) are studied for the bisoxazoline‐catalyzed asymmetric nucleophilic addition of diethyl zinc to fluorinated alkyl ketones.
ChemInform Abstract: The First 4,4′‐Imidazolium‐Tagged C2‐Symmetric Bis(oxazolines): Application in the Asymmetric Henry Reaction.
Authors: Tang Li‐Wei , Dong Xiao , Zhou Zhi‐Ming , Liu Ying‐Qiang , Dai Li , Zhang Man 
Published: May 2015

AbstractThe title compounds, synthesized from dimethylmalonic acid, are successfully used as chiral ligands in the copper(II)‐catalyzed asymmetric Henry reaction of various aromatic aldehydes (I) and nitromethane (II).
ChemInform Abstract: Regiodivergent Halogenation of Vinylogous Esters: One‐Pot, Transition‐Metal‐Free Access to Differentiated Haloresorcinols.
Authors: Chen Xiaohong , Martinez Jenny S. , Mohr Justin T. 
Published: May 2015

AbstractStarting from a common precursor mild reaction conditions are developed for the scalable regiodivergent preparation of 4‐ or 6‐haloresorcinols endowed with various functional groups.
ChemInform Abstract: Benzimidazolin‐2‐ylidene N‐Heterocyclic Carbene Complexes of Ruthenium as a Simple Catalyst for the N‐Alkylation of Amines Using Alcohols and Diols.
Authors: Shan Siah Pei , Xiaoke Xie , Gnanaprakasam Boopathy , Dang Tuan Thanh , Ramalingam Balamurugan , Huynh Han Vinh , Seayad Abdul Majeed 
Published: May 2015

AbstractSimple air and moisture stable ruthenium complexes are synthesized from readily available benzannulated N‐heterocyclic carbene ligands and applied as catalysts for the alkylation of various amines using alcohols under solvent‐free conditions.
ChemInform Abstract: Ni‐Catalyzed α‐Arylation of Esters and Amides with Phenol Derivatives.
Authors: Koch Eva , Takise Ryosuke , Studer Armido , Yamaguchi Junichiro , Itami Kenichiro 
Published: May 2015

AbstractThe title reaction proceeds in the presence of an unique nickel catalyst, prepared in situ from Ni(cod)2, 3,4‐bis(dicyclohexylphosphino)thiophene (dcypt), and K3PO4.
ChemInform Abstract: A General Synthesis of Fluoroalkylated Alkenes by Palladium‐Catalyzed Heck‐Type Reaction of Fluoroalkyl Bromides.
Authors: Feng Zhang , Min Qiao‐Qiao , Zhao Hai‐Yang , Gu Ji‐Wei , Zhang Xingang 
Published: May 2015

AbstractThis is the first example of a Pd(II)‐catalyzed Heck‐type reaction of alkenes with perfluoroalkyl halides.
ChemInform Abstract: Direct α‐Arylation of Ethers Through the Combination of Photoredox‐Mediated C—H Functionalization and the Minisci Reaction.
Authors: Jin Jian , MacMillan David W. C. 
Published: May 2015

AbstractTransient α‐oxyalkyl radicals from cyclic and noncyclic ethers are generated via photolytically induced hydrogen atom transfer.
ChemInform Abstract: Chiral Broensted Acid‐Catalyzed Friedel—Crafts Alkylation of Electron‐Rich Arenes with in situ‐Generated ortho‐Quinone Methides: Highly Enantioselective Synthesis of Diarylindolylmethanes and Triarylmethanes.
Authors: Saha Satyajit , Alamsetti Santosh Kumar , Schneider Christoph 
Published: May 2015

AbstractAn efficient asymmetric Friedel—Crafts alkylation of indoles and naphthols with in‐situ‐generated ortho‐quinone methides using an (R)‐BINOL derived phosphoric acid (BIN) as catalyst.
ChemInform Abstract: Effects of B2pin2 and PCy3 on Copper‐Catalyzed Trifluoromethylation of Substituted Alkenes and Alkynes with the Togni Reagent.
Authors: Janson Paer G. , Ilchenko Nadia O. , Diez‐Varga Alberto , Szabo Kalman J. 
Published: May 2015

AbstractThe use of B2pin2 shows better results in the presented reaction than PCy3.
ChemInform Abstract: Chemoselective Hydration of Nitriles to Amides Using Hydrated Ionic Liquid (IL) Tetrabutylammonium Hydroxide (TBAH) as a Green Catalyst.
Authors: Veisi Hojat , Maleki Behrooz , Hamelian Mona , Ashrafi Samaneh Sedigh 
Published: May 2015

AbstractA convenient and selective hydration of nitriles to the corresponding amides without any use of a transition metal is developed.
ChemInform Abstract: Zirconium‐Mediated Multicomponent Reactions of 1,3‐Butadiynes with Ylidenemalononitriles to Form Functionalized 1,8‐Naphthyridine and Cyclopenta[b]pyridine Derivatives.
Authors: Yu Shasha , Sun Renhong , Chen Haoyi , Xie Xin , Liu Yuanhong 
Published: May 2015

AbstractA zirconocene‐mediated multicomponent protocol via an intermediate zirconocene‐butadiyne complex is presented for the two‐step reaction of butadiynes with 1,1‐dicyanoethene compounds.
ChemInform Abstract: Copper‐Mediated Trifluoromethylation Using Phenyl Trifluoromethyl Sulfoxide.
Authors: Li Xinjin , Zhao Jingwei , Zhang Liang , Hu Mingyou , Wang Limin , Hu Jinbo 
Published: May 2015

AbstractThe preparation of a “CuCF3” species and its application in the trifluoromethylation of aryl iodides and activated aryl bromides as well as its cross‐coupling with terminal alkynes and aryl boronic acids are described.
ChemInform Abstract: E‐ or Z‐Selective Synthesis of 4‐Fluorovinyl‐1,2,3‐triazoles with Fluorinated Second‐Generation Julia—Kocienski Reagents.
Authors: Kumar Rakesh , Singh Govindra , Todaro Louis J. , Yang Lijia , Zajc Barbara 
Published: May 2015

AbstractAlkyl, aryl, and metallocenyl azides are tolerated for the preparation of the Julia‐Kociensky substrates.
ChemInform Abstract: Combination of Fluoroalkylation and Kornblum—DeLaMare Reaction: A New Strategy for the Construction of (Z)‐β‐Perfluoroalkyl Enaminones.
Authors: Liu Chunmei , Shi Erbo , Xu Feng , Luo Qiang , Wang Hongxiang , Chen Jijun , Wan Xiaobing 
Published: May 2015

AbstractThis new multicomponent radical reaction involves a cleavage of two C—F bonds and one C—X bond and three new bonds (C=O, C=C, and C—N) are created.
ChemInform Abstract: Organocatalytic Asymmetric Michael Addition of Aldehydes and Ketones to Nitroalkenes Catalyzed by Adamantoyl L‐Prolinamide.
Authors: Wang Yongchao , Li Dong , Lin Jun , Wei Kun 
Published: May 2015

AbstractA series of adamantoyl L‐prolinamides is synthesized as highly efficient organocatalysts for the asymmetric Michael addition of aldehydes and ketones to nitroalkenes.
ChemInform Abstract: Synthesis of (Z)‐Fluoroallyl Azides Through Aluminium‐Mediated Defluorinative Functionalization Reactions.
Authors: Sato Azusa , Yanai Hikaru , Suzuki Daiki , Okada Midori , Taguchi Takeo 
Published: May 2015

AbstractAluminum mediated defluorinative azidation of substrates (I) provides (Z)‐fluoroallyl azides as the major products.
ChemInform Abstract: Stereoselective Acetate Aldol Reactions of α‐Silyloxy Ketones.
Authors: Lorente Adriana , Pellicena Miquel , Romea Pedro , Urpi Felix 
Published: May 2015

AbstractThe title process is investigated in detail and ketones (I) and (V) are found to produce the desired 1,4‐syn aldol adducts with moderate to high stereocontrol when they react with achiral or chiral aldehydes after treatment with TiCl4 according to A).
ChemInform Abstract: Selective Palladium‐Catalyzed Aminocarbonylation of 1,3‐Dienes: Atom‐Efficient Synthesis of β,γ‐Unsaturated Amides.
Authors: Fang Xianjie , Li Haoquan , Jackstell Ralf , Beller Matthias 
Published: May 2015

AbstractA palladium‐based catalyst system allows the aminocarbonylation of dienes with high regioselectivity.
ChemInform Abstract: Consecutive Three‐Component Synthesis of (Hetero)arylated Propargyl Amides by Chemoenzymatic Aminolysis—Sonogashira Coupling Sequence.
Authors: Hassan Sidra , Ullrich Anja , Mueller Thomas J. J. 
Published: May 2015

AbstractThe reaction provides access to N‐hetarylpropargyl and N‐arylpropargyl alkyl, alkenyl, alkynyl, benzyl and hetaryl amides endowed with a variety of functional groups.
ChemInform Abstract: A Simple and Efficient Palladium Catalyst of Nitrogen‐Based Ligand for Cu(I)‐ and Amine‐Free Sonogashira Reaction.
Authors: Guo Meng‐ping , Liu Shi‐wen , Chen San‐bao , Wen Yong‐ju , Liang Hui , Lv Mei‐yun 
Published: May 2015

AbstractA green approach for Sonogashira coupling of aryl halides and terminal alkynes is developed using copper‐, amine‐, and phosphine—free catalytic system based on palladium glycine ligand complex.
ChemInform Abstract: Cooperative Catalysis of p‐Aminophenol and Titanocene Dichloride in Direct Mannich Reactions with Acetone.
Authors: Zhu Xuyang , Chen Chun , Yu Binxun , Zhang Guofang , Zhang Weiqiang , Gao Ziwei 
Published: May 2015

AbstractTitanocene dichloride/p‐aminophenol acts as efficient catalytic system, which allows for mild and highly efficient direct three‐component Mannich reactions of both aryl and alkyl ketones.
ChemInform Abstract: Synthesis of tert‐Butyl 1,3‐Diaryl‐3‐oxopropylcarbamates by a Regiocontrolled Reduction of Ketoaziridines.
Authors: Samimi Heshmat A. , Yamin Bohari M. , Saberi Fatemeh 
Published: May 2015

AbstractThe reductive ring opening of N—H ketoaziridines (I) in the presence of different electrophiles is studied.
ChemInform Abstract: Efficient Synthetic Route to Bisaryl Ketones via Copper‐Catalyzed C—C Triple Bonds Cleavage.
Authors: Li Xiangguang , Huang Wenzhong , Liang Deqiang , Yuan Lin , Ma Yinhai , Gu Lijun 
Published: May 2015

AbstractAn efficient and practical copper‐catalyzed aerobic synthesis of bisaryl ketones from 1,2‐diarylalkynes via C—C triple bonds cleavage under mild conditions is presented.
ChemInform Abstract: Palladium‐Catalyzed Oxidative Carbonylation of Aromatic C—H Bonds of N‐Alkylanilines with CO and Alcohols for the Synthesis of o‐Aminobenzoates.
Authors: Chen Ming , Ren Zhi‐Hui , Wang Yao‐Yu , Guan Zheng‐Hui 
Published: May 2015

AbstractVarious aliphatic alcohols and phenol (XIIIb) can be used under CO atmosphere in the presence of Pd(O‐Ac)2 as an optimal catalyst.
ChemInform Abstract: Metal‐Free Cascade Construction of C—C Bonds by Activation of Inert C(sp3)—H Bonds.
Authors: Zhang Honglin , Pan Changduo , Jin Ning , Gu Zhangxi , Hu Hongwen , Zhu Chengjian 
Published: May 2015

AbstractThe alkylation of alkenes with cycloalkanes is carried out by radical—based cascade reaction including C—H bond activation, SO2 elimination, and C—C bond formation.
ChemInform Abstract: Selective Thioacylation of Amines in Water: A Convenient Preparation of Secondary Thioamides and Thiazolines.
Authors: Pathak Uma , Bhattacharyya Shubhankar , Mathur Sweta 
Published: May 2015

AbstractPrimary thioamides (I) are used for the direct selective thioacetylation of primary amines (II) in water.
ChemInform Abstract: Recyclable and Reusable Pd(OAc)2/PPh3/PEG‐2000 System for Homocoupling Reaction of Arylboronic Acids under Air Without Base.
Authors: Xia Jianhui , Cheng Mingzhu , Chen Qiurong , Cai Mingzhong 
Published: May 2015

AbstractA series of symmetrical biaryls (II) is obtained under air without base.
ChemInform Abstract: CO Extrusion in Homogeneous Gold Catalysis: Reactivity of Gold Acyl Species Generated Through Water Addition to Gold Vinylidenes.
Authors: Bucher Janina , Stoesser Tim , Rudolph Matthias , Rominger Frank , Hashmi A. Stephen K. 
Published: May 2015

AbstractA novel reactivity of gold vinylidenes is discovered through the addition reaction of water to gold vinylidene intermediates resulting in CO‐extrusion and cyclization to indenes.
ChemInform Abstract: Copper‐Catalyzed Difunctionalization of Activated Alkynes by Radical Oxidation‐Tandem Cyclization/Dearomatization to Synthesize 3‐Trifluoromethyl Spiro[4.5]trienones.
Authors: Hua Hui‐Liang , He Yu‐Tao , Qiu Yi‐Feng , Li Ying‐Xiu , Song Bo , Gao Pin , Song Xian‐Rong , Guo Dong‐Hui , Liu Xue‐Yuan , Liang Yong‐Min 
Published: May 2015

AbstractUnder optimized conditions the reaction of arylpropiolamides and esters with sodium trifluoromethanesulfinate affords spirotrienones in moderate yields.
ChemInform Abstract: Asymmetric Tandem 1,5‐Hydride Shift/Ring Closure for the Synthesis of Chiral Spirooxindole Tetrahydroquinolines.
Authors: Cao Weidi , Liu Xiaohua , Guo Jing , Lin Lili , Feng Xiaoming 
Published: May 2015

AbstractA chiral N,N′‐dioxide complex (DPR) in combination with Sc(OTf)2 as catalytic system allows the intramolecular cyclization of various oxindole derivatives to form spirocyclic products with high diastereo‐ and enantioselectivities.
ChemInform Abstract: Synthesis and Ring Transformation of Oxygen and Nitrogen Spiro Bisheterocycles.
Authors: Talhi Oualid , Pinto Diana C. G. A. , Almeida Paz Filipe , Hamdi Maamar , Silva Artur M. S. 
Published: May 2015

AbstractA facile and rapid access to various bridgehead spiro bisheterocycles based on spiro‐to‐spiro ring transformation of easily available spiro[chromanone‐hydantoin] compounds (I) is described.
ChemInform Abstract: Microwave‐Mediated Regiospecific Synthesis of Some Novel Annulated Spiro[indoline‐3,1′‐indolizin]‐2‐ones
Authors: Al‐Bogami Abdullah , El‐Ahl Abdelaziz S. 
Published: May 2015

Abstractvia 1,3‐dipolar cycloaddition of heteroaromatic N‐ylides with 2‐oxoethylideneoxindoles (I)
ChemInform Abstract: Quinine‐Catalyzed Asymmetric Domino Mannich‐Cyclization Reactions of 3‐Isothiocyanato Oxindoles with Imines for the Synthesis of Spirocyclic Oxindoles.
Authors: Bai Mei , Cui Bao‐Dong , Zuo Jian , Zhao Jian‐Qiang , You Yong , Chen Yong‐Zheng , Xu Xiao‐Ying , Zhang Xiao‐Mei , Yuan Wei‐Cheng 
Published: May 2015

AbstractSpirocyclic oxindoles are obtained by the title cyclization reaction with good to excellent diastereo‐ and enantioselectivities.
ChemInform Abstract: An Easy and Convenient Synthesis of β‐Lactams via a One‐Pot Staudinger Reaction with 4‐(4,6‐Dimethoxy‐1,3,5‐triazin‐2‐yl)‐4‐methylmorpholinium Chloride Starting from Substituted Carboxylic Acids.
Authors: Zarei Maaroof 
Published: May 2015

AbstractDMTMM‐mediated [2 + 2] cycloaddition of imines with carboxylic acids provides stereoselective access to 2‐azetidinones in good to high yield.
ChemInform Abstract: Metal‐Catalyzed Thermal Reactions of Cyclic β‐Dicarbonyl Phenyliodonium Ylide with Styrenes.
Authors: Bosnidou Alexandra‐Eleni , Kalpogiannaki Dimitra , Karanestora Sofia , Nixas John A. , Hadjiarapoglou Lazaros P. 
Published: May 2015

AbstractUnder conditions B), exclusive formation of dihydrofuran structures takes place in a highly regioselective manner.
ChemInform Abstract: Synthesis of Polysubstituted Pyrroles via Pd‐Catalyzed Oxidative Alkene C—H Bond Arylation and Amination.
Authors: Zheng Jia , Huang Liangbin , Huang Chuyu , Wu Wanqing , Jiang Huanfeng 
Published: May 2015

AbstractVarious N‐homoallylic amines are cyclized to functionalized pyrrole structures (mechanism).
ChemInform Abstract: Zirconocene Dichloride Catalyzed One‐Pot Synthesis of Pyrroles Through Nitroalkene‐Enamine Assembly.
Authors: Goyal Sandeep , Patel Jatinkumar K. , Gangar Mukesh , Kumar Kapil , Nair Vipin A. 
Published: May 2015

AbstractInexpensive zirconocene dichloride is found to be an efficient catalyst for the synthesis of polysubstituted pyrroles by three‐component one‐pot reaction of β‐dicarbonyl compounds, various amines, and nitroalkenes in an environmentally benign reaction medium.
ChemInform Abstract: Formal [3 + 2] Cycloaddition of Ugi Adducts Towards Pyrrolines.
Authors: Ben Abdessalem Abdelbari , Abderrahim Raoudha , Agrebie Asma , Dos Santos Aurelie , El Kaim Laurent , Komesky Andrew 
Published: May 2015

AbstractThe reaction conditions avoid the use of added electrophilic reagents to remove water from the system to generate the reactive 1,3‐dipole.
ChemInform Abstract: PyBidine‐Cu(OTf)2‐Catalyzed Asymmetric [3 + 2] Cycloaddition with Imino Esters: Harmony of Cu‐Lewis Acid and Imidazolidine‐NH Hydrogen Bonding in Concerto Catalysis.
Authors: Arai Takayoshi , Ogawa Hiroki , Awata Atsuko , Sato Makoto , Watabe Megumi , Yamanaka Masahiro 
Published: May 2015

AbstractA Cu‐catalyzed [3 + 2] cycloaddition of exomethylene substituted indolinones (I) and (IV) with imino esters (II) and (V) is investigated in the presence of chiral pyridine‐based chelating ligands such as (PDB) to yield spirocyclic compounds (III) and (V).
ChemInform Abstract: Palladium‐Catalyzed Intramolecular C—H Difluoroalkylation: Synthesis of Substituted 3,3‐Difluoro‐2‐oxindoles.
Authors: Shi Shi‐Liang , Buchwald Stephen L. 
Published: May 2015

AbstractThe title reaction generates a broad range of difluorooxindoles from readily prepared starting materials.