bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mutational Biosynthesis of Ansamitocin Antibiotics: A Diversity‐Oriented Approach to Exploit Biosynthetic Flexibility
Authors: Knobloch Tobias , Harmrolfs Kirsten , Taft Florian , Thomaszewski Binia , Sasse Florenz , Kirschning Andreas 
Published: January 2011

AbstractNew ansamitocin derivatives were prepared by feeding aminobenzoic acid derivatives to cultures of Actinosynnema pretiosum HGF073, a mutant strain blocked in the biosynthesis of the required 3‐amino‐5‐hydroxybenzoic acid (AHBA) starter unit. Use of several aminobenzoic acids as precursors led to a spectrum of products, reflecting the sequence of post‐PKS tailoring steps involved in the generation of ansamitocins and adding novel aspects to the published suggestion model of post‐PKS tailoring logic and flexibility. The studies provide insights into the substrate flexibility of the enzymes required for ansamitocin biosynthesis in A. pretiosum, whereas preliminary biological testing of the derivatives isolated and fully characterized by NMR spectroscopy allowed structure–activity relationship assignments to be made for a variety of intermediates occurring during the post‐PKS tailoring sequence in ansamitocin biosynthesis.
Supported Ionic Liquid Phase Containing Palladium Nanoparticles on Functionalized Multiwalled Carbon Nanotubes: Catalytic Materials for Sequential Heck Coupling/Hydrogenation Process
Authors: Rodríguez‐Pérez Laura , Pradel Christian , Serp Philippe , Gómez Montserrat , Teuma Emmanuelle 
Published: January 2011

AbstractWell‐dispersed palladium nanoparticles have been prepared in ionic liquids in the presence of 4‐(3‐phenylpropyl)pyridine under dihydrogen. These nanoparticles are immobilized onto multiwalled carbon nanotubes modified with imidazolium moieties (fCNTs). The resulting catalytic materials are tested in hydrogenation and Heck coupling reactions. Analogous Pd nanoparticles dispersed in ionic liquids have also been immobilized on silica for comparative purposes. fCNTs are found to be the best support for both hydrogenation and Heck coupling, being recycled up to four times without significant activity loss. Palladium nanoparticles supported on fCNTs are used as a single catalytic precursor for the CC coupling/ hydrogenation sequential process using [EMI][HP(O)2OMe] (EMI=1‐ethyl‐3‐methyl imidazolium) ionic liquid phase without addition of supplementary base.
Confirmation of Chirality in Homogeneous and Heterogeneous Salen‐Based Catalysts
Authors: McCue Alan J. , Wells Richard P. K. , Anderson James A. 
Published: January 2011

AbstractThe extent to which diastereomeric excess (de) of epoxide products is influenced by the structure of the chiral olefin substrate has been assessed for two enantiomers of limonene and two enantiomers of pinene and using a number of homogeneous and heterogeneous [Mn(salen)]‐based catalysts, based on both chiral and achiral structures. No evidence was obtained to suggest that double asymmetric induction took place, but instead results indicate that the stereoselectivity of the epoxide product was governed wholly by the substrate. Results call into question the use of such substrates alone in drawing conclusions regarding the nature of presumed stereogenic centers in such catalysts.
Copper‐Catalyzed Trifluoromethylation of Aryl Iodides with Potassium (Trifluoromethyl)trimethoxyborate
Authors: Knauber Thomas , Arikan Fatih , Röschenthaler Gerd‐Volker , Gooßen Lukas J. 
Published: January 2011

AbstractPotassium (trifluoromethyl)trimethoxyborate is introduced as a new source of CF3 nucleophiles in copper‐catalyzed trifluoromethylation reactions. The crystalline salt is stable on storage, easy to handle, and can be obtained in near‐quantitative yields simply by mixing B(OMe)3, CF3SiMe3, and KF. The trifluoromethylation reagent allows the conversion of various aryl iodides into the corresponding benzotrifluorides in high yields under mild, base‐free conditions in the presence of catalytic quantities of a CuI/1,10‐phenanthroline complex.
Total Synthesis of cyclo‐Mumbaistatin Analogues through Anionic Homo‐Fries Rearrangement
Authors: Neufeind Stefan , Hülsken Nils , Neudörfl Jörg‐Martin , Schlörer Nils , Schmalz Hans‐Günther 
Published: January 2011

AbstractThe structurally unique polyketide mumbaistatin is the strongest naturally occurring inhibitor of glucose‐6‐phosphate translocase‐1 (G6P‐T1), which is a promising target for drugs against type‐2 diabetes mellitus and angiogenic processes associated with brain tumor development. Despite its high relevance, mumbaistatin has so far withstood all attempts towards its total synthesis. In the present study an efficient total synthesis of a deoxy‐mumbaistatin analogue containing the complete carbon skeleton and a spirolactone motif closely resembling the natural product in its cyclized form was elaborated. Key steps of the synthesis are a Diels–Alder cycloaddition for the construction of the fully functionalized anthraquinone moiety and an anionic homo‐Fries rearrangement to build up the tetra‐ortho‐substituted benzophenone core motif, from which a spiroketal lactone forms in a spontaneous process. The elaborated strategy opens an entry to a variety of new analogs of mumbaistatin and cyclo‐mumbaistatin and may be exploited for the total synthesis of the natural product itself in the future.
Multicomponent Synthesis of Chiral Sulfinimines
Authors: Roe Caroline , Hobbs Heather , Stockman Robert A. 
Published: January 2011

AbstractTwo oxathiozolidine‐S‐oxide templates have been developed and used in a four‐component coupling protocol for the synthesis of a wide range of chiral sulfinimines in high enantiomeric excesses. The templates can be synthesized from cheap commodity chemicals in three steps in high yields. Furthermore the template is easily recovered in high yields for recycling.
ChemInform Abstract: The High‐Pressure Phase of MgB2C2.
Authors: Woerle Michael , Fischbach Urs , Widmer Daniel , Krumeich Frank , Nesper Reinhard , Evers Juergen , Stalder Roland , Ulmer Peter 
Published: January 2011

AbstractThe high pressure phase of title is prepared by heating the ambient‐pressure form of MgB2C2 at 9 GPa and 1300 °C for 24 h.
ChemInform Abstract: Structure and Bonding of γ‐B28: Is the High Pressure Form of Elemental Boron Ionic?
Authors: Haeussermann Ulrich , Mikhaylushkin Arkady S. 
Published: January 2011

AbstractThe recently characterized crystal structure of metastable γ‐B28 is analyzed from a crystal chemical point of view and compared with that of α‐B12, the simplest boron modification.
ChemInform Abstract: A Facile Route for the Synthesis of Polycationic Tellurium Cluster Compounds: Synthesis in Ionic Liquid Media and Characterization by Single‐Crystal X‐Ray Crystallography and Magnetic Susceptibility.
Authors: Ahmed Ejaz , Ahrens Eike , Heise Martin , Ruck Michael 
Published: January 2011

AbstractAs revealed by single crystal XRD compound (III) crystallizes in the monoclinic space group P21/n with Z = 4, (VI) in the orthorhombic space group Pbca with Z = 4, and (VIII) in the monoclinic space group P21/c with Z = 8.
ChemInform Abstract: Highly Uniform and Monodisperse Gd2O2S:Ln3+ (Ln: Eu, Tb) Submicrospheres: Solvothermal Synthesis and Luminescence Properties.
Authors: Song Yanhua , You Hongpeng , Huang Yeju , Yang Mei , Zheng Yuhua , Zhang Lihui , Guo Ning 
Published: January 2011

AbstractWell dispersed and homogenous submicrospheres of Gd2O2S:Ln3+ (Ln: Eu, Tb) are prepared by mild solvothermal reaction of the corresponding lanthanide nitrates with thiourea in the presence of poly(vinylpyrrolidine) (PVP K30) in glycol/EtOH (autoclave, 200 °C, 24 h) followed by heat treatment at 600—800 °C (2 h).
ChemInform Abstract: Crystal Structures of the Europium and Yttrium Hydroxychromates Eu(OH)(CrO4) and Y(OH)(CrO4); Structural Evolution as a Function of the Ln3+ Ionic Radius.
Authors: Phanon Delphine , Gautier‐Luneau Isabelle 
Published: January 2011

AbstractTitle compounds (V) and (VIII) crystallize isostructurally in the monoclinic space group P21/n with Z = 8 (single crystal XRD).
ChemInform Abstract: Three‐Dimensional Architectures Based on Lanthanide‐Substituted Double‐Keggin‐Type Polyoxomethalates and Lanthanide Cations or Lanthanide‐Organic Complexes.
Authors: An Haiyan , Han Zhengbo , Xu Tieqi 
Published: January 2011

AbstractThe structures of the new title compounds (III) (monoclinic, space group P21/c, Z = 2) and (IV) (P21/c, Z = 2) as well as of (VI) (triclinic, P$\bar 1$, Z = 1) are determined by single crystal XRD.
ChemInform Abstract: Hydrazine‐Hydrothermal Method to Synthesize Three‐Dimensional Chalcogenide Framework for Photocatalytic Hydrogen Generation.
Authors: Zhang Qichun , et al. et al. 
Published: January 2011

AbstractDark‐red crystals of Mn2Sb2S5 (N2H4)3 are synthesized by reaction of Sb2S3, Mn, and sulfur in N2H4·H2O (autoclave, 140 °C, 7 d, 70% yield).
ChemInform Abstract: Crystal Structure and Magnetic Properties of Na2NiII(HPO3)2.
Authors: Maalej Wassim , Vilminot Serge , Elaoud Zakaria , Mhiri Tahar , Kurmoo Mohamedally 
Published: January 2011

AbstractLight yellow‐green crystals of the title compound are synthesized by solvothermal reaction of NiCl2, NaOH, H3PO3, and L‐phenylalanine in H2O/MeOH (1:4) (pH ≈3.5, autoclave, 150 °C, 5 d).
ChemInform Abstract: Isoquinoline‐Based Chiral Monodentate N‐Heterocyclic Carbenes.
Authors: Hirsch‐Weil Dimitri , Abboud Khalil A. , Hong Sukwon 
Published: January 2011

AbstractA novel C1‐symmetric “mono”‐isoquinoline based chiral NHC ligand (MIQ) is synthesized and successfully applied as catalyst for the conjugate borylation of a variety of α,β‐unsaturated carbonyl compounds.
ChemInform Abstract: Development of 5‐Silylethynyl‐1,3‐dioxolan‐4‐one as a New Prochiral Template for Asymmetric Phase‐Transfer Catalysis.
Authors: Hashimoto Takuya , Fukumoto Kazuhiro , Abe Naoyuki , Sakata Kazuki , Maruoka Keiji 
Published: January 2011

AbstractThe asymmetric alkylation of dioxolanone (V) in the presence of axially chiral quaternary ammonium salt (BNQ) as phase‐transfer catalyst leads to α‐chiral acetylenes (VII) with good enantioselectivities.
ChemInform Abstract: Enantioselective Synthesis of Amines: General, Efficient Iron‐Catalyzed Asymmetric Transfer Hydrogenation of Imines.
Authors: Zhou Shaolin , Fleischer Steffen , Junge Kathrin , Das Shoubhik , Addis Daniele , Beller Matthias 
Published: January 2011

AbstractA variety of aromatic and aliphatic imines is smoothly hydrogenated in the presence of an iron—diphosphine catalyst to give the corresponding amines (II), (IV) or (VI) in good yields and high enantioselectivities (up to 98% e.e.).
ChemInform Abstract: Metal Phthalocyanine‐Catalyzed Addition of Polychlorine‐Containing Organic Compounds to C=C Bonds.
Authors: Ivanov A. V. , Maksimov A. Yu. , Tomilova L. G. , Zefirov N. S. 
Published: January 2011

AbstractCopper as well as cobalt tetra(tert‐butyl)phthalocyanines are effective catalysts for the addition of polychlorine compounds to C=C double bonds.
ChemInform Abstract: Site‐Selective and Regioselective Diels—Alder Reaction of Allenyl Aryl Ethers.
Authors: Moghaddam Firouz Matloubi , Kiamehr Mostafa 
Published: January 2011

AbstractThe external double bond of allenyl aryl ethes (III) undergoes Diels‐Alder reaction with electron‐rich 1,3‐dienes [‐< (VII)/(VIII)], while the internal double bond of (III) undergoes Diels‐Alder reaction with electron‐deficient 1,3‐dienes as a dienophile [‐< (V)].
ChemInform Abstract: Cyclization of 1,3‐Dialkyl‐4,5‐bis(1‐thiosemicarbazido)imidazolidin‐2‐ones(thiones) with Aromatic Aldehydes.
Authors: Gazieva Galina A. , Vasilevskii Sergei V. , Belyakov Pavel A. , Nelyubina Yulia V. , Lubuzh Elena D. , Kravchenko Angelina N. 
Published: January 2011

AbstractCyclization of imidazolidinones, e.g. (I), in the presence of aldehydes (II) leads to products of type (III).
ChemInform Abstract: Scandium‐Catalyzed Propargylation of 1,3‐Diketones with Propargyl Alcohols Bearing Sulfur or Selenium Functional Groups: Useful Transformation to Furans and Pyrans.
Authors: Ohta Katsuki , Kobayashi Taira , Tanabe Genzoh , Muraoka Osamu , Yoshimatsu Mitsuhiro 
Published: January 2011

AbstractThe synthesis of propargylated 1,3‐diketones by Lewis‐acid catalytic reactions and their subsequent transformation into furans and pyrans are described.
ChemInform Abstract: A Reductive‐Coupling Plus Nazarov Cyclization Sequence in the Asymmetric Synthesis of Five‐Membered Carbocycles.
Authors: Kerr Daniel J. , White Jonathan M. , Flynn Bernard L. 
Published: January 2011

AbstractIt provides an efficient, convergent, and highly stereoselective method to prepare cyclopentenones, indanones, and related compounds.
ChemInform Abstract: Water Mediated Trapping of Active Methylene Intermediates Generated by IBX‐Induced Oxidation of Baylis—Hillman Adducts with Nucleophiles.
Authors: Tan Jia‐Neng , Li Haoquan , Gu Yanlong 
Published: January 2011

AbstractIBX induced oxidation of Baylis‐Hillman adducts is suggested as an alternative way to methylenylation of β‐dicarbonyl compounds with formaldehyde for generation of active methylene intermediates.
ChemInform Abstract: Polyfluorination Using IF5.
Authors: Fukuhara Tadahito , Hara Shoji 
Published: January 2011

AbstractVarious polyfluorinated compounds bearing 3 to 6 fluorine atoms can be prepared selectively by successive fluorination of thioethers with IF5, Friedel—Crafts arylation, and desulfurizing fluorination with IF5.
ChemInform Abstract: Highly Efficient and Practical Pyrrolidine—Camphor‐Derived Organocatalysts for the Direct α‐Amination of Aldehydes.
Authors: Liu Pang‐Min , Magar Dhananjay R. , Chen Kwunmin 
Published: January 2011

AbstractAsymmetric α‐amination of a range of aldehydes is successfully achieved in the presence of organocatalysts containing pyrrolidine and camphor subunits tethered via sulfone or sulfonamide functionality, e.g. PCSA, PCS (in parts published previously).
ChemInform Abstract: Highly Enantioselective Michael Addition of Acetone to Nitro Olefins Catalyzed by Chiral Bifunctional Primary Amine‐Thiophosphoramide Catalyst.
Authors: Lu Aidang , Liu Tao , Wu Ronghua , Wang Youming , Zhou Zhenghong , Wu Guiping , Fang Jianxin , Tang Chuchi 
Published: January 2011

AbstractThe title bifunctional organocatalyst promotes the Michael addition of both alkyl and aryl nitro olefins to acetone and cyclopentanone; however, no reactions are observed with cyclohexanone.
ChemInform Abstract: Electrocarboxylation of Carbon Dioxide with Polycyclic Aromatic Hydrocarbons Using Ni as the Cathode.
Authors: Yuan Gaoqing , Li Liuguan , Jiang Huanfeng , Qi Chaorong , Xie Fengchun 
Published: January 2011

AbstractUsing Ni cathode and Al sacrificial anode, the stereoselective electrocarboxylation of polycyclic aromatic hydrocarbons with carbon dioxide can be successfully performed in an undivided cell.
ChemInform Abstract: Cu(II)‐Catalyzed Carboxylative Coupling of Terminal Alkynes, Allyl Chlorides, and CO2.
Authors: Zhang Wen‐Zhen , Li Wen‐Jie , Zhang Xiao , Zhou Hui , Lu Xiao‐Bing 
Published: January 2011

AbstractThe heteroaryl‐substituted alkyne (Id) reacts only with moderate yield and a very low catalyst recovery (42%).
ChemInform Abstract: Benzotriazol‐1‐yl‐sulfonyl Azide for Diazotransfer and Preparation of Azidoacylbenzotriazoles.
Authors: Katritzky Alan R. , El Khatib Mirna , Bol'shakov Oleg , Khelashvili Levan , Steel Peter J. 
Published: January 2011

AbstractThe azide allows convenient and effective access to various diazo compounds and a number of azides including α‐azido acids, esters, thioesters, amides, and peptides.
ChemInform Abstract: γ‐Oxygenation of α,β‐Unsaturated Esters by Vinylogous O‐Nitroso Mukaiyama Aldol Reaction.
Authors: Tian Guo‐Qiang , Yang Jiong , Rosa‐Perez Kellymar 
Published: January 2011

AbstractThe first example of the vinylogous O‐nitroso Mukaiyama aldol reaction is reported to proceed with the exclusive formation of γ‐oxygenated α,β‐unsaturated esters.
ChemInform Abstract: Single Isomer Trisubstituted Olefins Bearing Alkyl Groups.
Authors: Rajagopal Thivisha , Flynn Alison B. , Ogilvie William W. 
Published: January 2011

AbstractA stereo‐ and regiospecific cross‐coupling of (E)‐configurated esters of type (I) with 9‐BBN derivatives (II) affords the desired olefins (III).
ChemInform Abstract: Sequential Organocatalytic Stetter and Michael‐Aldol Condensation Reaction: Asymmetric Synthesis of Fully Substituted Cyclopentenes via a [1 + 2 + 2] Annulation Strategy.
Authors: Hong Bor‐Cherng , Dange Nitin S. , Hsu Che‐Sheng , Liao Ju‐Hsiou 
Published: January 2011

AbstractThe method consists of the preparation of the β‐nitroketones using thiazolium catalyst [cf.
ChemInform Abstract: One‐Pot N‐Acylation and N‐Alkylation of o‐Nitroaniline with Saturated Hydrocarbons in the Presence of Carbon Monoxide.
Authors: Akhrem Irena S. , Avetisyan Dzhul'etta V. , Kagramanov Nikolai D. , Petrovskii Pavel V. , Mysova Nadezhda E. 
Published: January 2011

AbstractThe activity of the title hydrocarbons in alkylation and acylation reactions depends on the stability of the corresponding R+ and R‐CO+ cations.
ChemInform Abstract: First General Route to Substituted α‐Arylamino‐α′‐chloropropan‐2‐ones by Oxidation of N‐Protected Aminohalohydrins: The Importance of Disrupting Hydrogen Bond Networks.
Authors: Pace Vittorio , Cabrera Alvaro Cortes , Fernandez Maria , Sinisterra Jose V. , Alcantara Andres R. 
Published: January 2011

AbstractThe presence of a network of intra‐ and intermolecular hydrogen bonds in β‐arylamino alcohols inhibits their oxidation to ketones.
ChemInform Abstract: Organocatalytic Preparation of Simple β‐Hydroxy and β‐Amino Esters: Low Catalyst Loadings and Gram‐Scale Synthesis.
Authors: Jiang Hao , Gschwend Bjoern , Albrecht Lukasz , Joergensen Karl Anker 
Published: January 2011

AbstractOne‐pot two‐step method, including proline‐catalyzed generation of the intermediate epoxide/aziridine and the consequent N‐heterocyclic carbene catalysis to yield the desired β‐hydroxy‐ or β‐amino esters.
ChemInform Abstract: Highly Effective Pd‐Catalyzed ortho Olefination of Acetanilides: Broad Substrate Scope and High Tolerability.
Authors: Kim Byung Seok , Jang Chungsik , Lee Dong Jin , Youn So Won 
Published: January 2011

AbstractAn effective Pd‐catalyzed ortho‐olefination of acetanilides tolerates many functional groups and is applicable to the electron‐deficient substrates.
ChemInform Abstract: Efficient Copper‐Catalyzed S‐Arylation of Thiols with Aryl Bromides and Chlorides.
Authors: Li Yaming , Li Xiaoying , Wang Huifeng , Chen Tao , Xie Yusheng 
Published: January 2011

AbstractThe copper‐catalyzed cross‐coupling reaction of aryl bromides and chlorides (I) with arylthiols (II) is especially effective for aryl bromides possessing electron‐donating groups, e.g. (Ia).
ChemInform Abstract: PhI(OAc)2/KI‐Mediated Reaction of Aryl Sulfinates with Alkenes, Alkynes, and α,β‐Unsaturated Carbonyl Compounds: Synthesis of Vinyl Sulfones and β‐Iodovinyl Sulfones.
Authors: Katrun Praewpan , Chiampanichayakul Supanimit , Korworapan Kanokwan , Pohmakotr Manat , Reutrakul Vichai , Jaipetch Thaworn , Kuhakarn Chutima 
Published: January 2011

AbstractTitle reaction proceeds under mild conditions for a wide range of terminal aromatic or aliphatic alkenes bearing electron‐donating or electron‐withdrawing substituents to give the corresponding vinyl sulfones, e.g. (III), (VII) or (IX), as E‐isomers in most cases [except for Z‐isomer (V) and isomeric mixture (XI)/(XII)].
ChemInform Abstract: Highly Effective Alternative Aryl Trihydroxyborate Salts for a Ligand‐Free, On‐Water Suzuki—Miyaura Coupling Reaction.
Authors: Basu Basudeb , Biswas Kinkar , Kundu Sekhar , Ghosh Sujit 
Published: January 2011

AbstractReadily accessible and air‐stable sodium aryl trihydroxyborates are utilized as an alternative source of organoboron species in the ligand‐free Pd‐catalyzed title reaction.
ChemInform Abstract: A Direct Synthesis of Symmetrical (E,E)‐1,4‐Diaryl‐1,3‐butadienes by Wenkert Arylation of Thiophene.
Authors: Hintermann Lukas , Schmitz Marco , Chen Yun 
Published: January 2011

AbstractBy use of either trialkylphosphanes or N‐heterocyclic carbenes as ligands for the nickel‐catalyzed Wenkert reaction, the original method is improved.
ChemInform Abstract: Catalytic Alkynylation Coupling Reactions by Copper(II) Complex in Water and Its Applications to Domino Synthesis of 2‐Arylindoles.
Authors: Yu Lintao , Jiang Xiaofei , Wang Lixia , Li Zhengkai , Wu Di , Zhou Xiangge 
Published: January 2011

AbstractAn efficient catalytic system for the alkynylation of aryl iodides is presented, involving a water‐soluble Cu—sulfonatosalen complex.
ChemInform Abstract: Pd‐Catalyzed Three‐Component Coupling of N‐Tosylhydrazone, Terminal Alkyne, and Aryl Halide.
Authors: Zhou Lei , Ye Fei , Zhang Yan , Wang Jianbo 
Published: January 2011

AbstractThe present new method for the synthesis of benzhydryl acetylene derivatives tolerates a wide range of functional groups and is applicable to aromatic as well as aliphatic terminal acetylenes.
ChemInform Abstract: Trapping the π‐Allylpalladium Intermediate from Fulvene‐Derived Azabicyclic Olefin with Soft Nucleophiles.
Authors: Rajan Rani , John Jubi , Thulasi Sreeja , Joseph Nayana , Radhakrishnan K. V. , Sawant R. C. 
Published: January 2011

AbstractRing opening of the pentafulvene‐derived bicyclic hydrazines (I), (V), and (VII) with phenols (II) and active methylene compounds (VII) furnishes the disubstituted alkylidenecyclopentenes (III), (VI), and (VIII), resp., in satisfactory to very good yields.
ChemInform Abstract: Studies on Novel Synthetic Methodologies. Part 209. Friedel—Crafts Reactions of 2‐Naphthol with α‐Amido Sulfones and Conversion of the Products with Nucleophiles.
Authors: Das Biswanath , Reddy Cheruku Ravindra , Sindhu Chava , Sudhakar Chithaluri , Nagendra Siddavatam 
Published: January 2011

AbstractNaphthol (I) undergoes indium‐catalyzed Friedel‐Crafts reaction with amido sulfones (II) to provide access to sulfonyl derivatives (III) in high yields.
ChemInform Abstract: Synthesis of 2‐Alkyl‐ and Aryl‐3‐ethoxycarbonyl‐2,5‐dihydrofurans Through Gold‐Catalyzed Intramolecular Hydroalkoxylation.
Authors: Eom Dahan , Kang Dongjin , Lee Phil Ho 
Published: January 2011

AbstractIt provides an efficient approach to 2,5‐dihydrofurans of type (II).
ChemInform Abstract: Catalyst‐Controlled Ring‐Opening Cycloisomerization Reactions of Cyclopropenyl Carboxylates for Highly Regioselective Synthesis of Different 2‐Alkoxyfurans.
Authors: Chen Jie , Ma Shengming 
Published: January 2011

AbstractThe protocol is developed for the cycloisomerization of the cyclopropenyl carboxylates or ketone to either 2‐alkoxy (or methyl)‐3,5‐ [cf.
ChemInform Abstract: 2‐Substituted Benzo[b]furans from (E)‐1,2‐Dichlorovinyl Ethers and Organoboron Reagents: Scope and Mechanistic Investigations into the One‐Pot Suzuki Coupling/Direct Arylation.
Authors: Geary Laina M. , Hultin Philip G. 
Published: January 2011

AbstractElectron‐rich aryl dichlorovinyl ethers like (I), (Xa) and (Xc), obtained from phenols and trichloroethylene, readily undergo one‐pot Suzuki cross coupling—cyclization to give 2‐arylbenzofuran derivatives in good yields.
ChemInform Abstract: A Facile Synthesis of Pyrazoles with Multi‐Point Structural Diversity by 1,3‐Dipolar Cycloaddition.
Authors: Cheung Kwai Ming J. , Reynisson Johannes , McDonald Edward 
Published: January 2011

AbstractThe cycloaddition of terminal alkynes with ester (II) affords the 3‐substituted regioisomers as main or exclusive products.
ChemInform Abstract: Fluorescent Sensors Based on 2‐Substituted Imidazolidines.
Authors: Tolpygin I. E. , Shepelenko E. N. , Revinskii Yu. V. , Tsukanov A. V. , Dubonosov A. D. , Bren V. A. , Minkin V. I. 
Published: January 2011

AbstractCompounds (III a) and (III b) exhibit selective sensor properties for Hg2+ and Cu2+ ions.
ChemInform Abstract: Diastereoselective Silver‐Catalyzed 1,3‐Dipolar Cycloaddition of Azomethine Ylides with Fluorinated Imine.
Authors: Xie Haibo , Zhu Jiangtao , Chen Zixian , Li Shan , Wu Yongming 
Published: January 2011

AbstractThe procedure allows a new and diastereoselective access to highly substituted imidazolidines.