bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hierarchical TiO2 Nanospheres with Dominant {001} Facets: Facile Synthesis, Growth Mechanism, and Photocatalytic Activity
Authors: Li Hongmei , Zeng Yangsu , Huang Tongcheng , Piao Lingyu , Yan Zijie , Liu Min 
Published: April 2012

AbstractHierarchical TiO2 nanospheres with controlled surface morphologies and dominant {001} facets were directly synthesized from Ti powder by a facile, one‐pot, hydrothermal method. The obtained hierarchical TiO2 nanospheres have a uniform size of 400–500 nm and remarkable 78 % fraction of {001} facets. The influence of the reaction temperature, amount of HF, and reaction time on the morphology and the exposed facets was systematically studied. A possible growth mechanism speculates that Ti powder first dissolves in HF solution, and then flowerlike TiO2 nanostructures are formed by assembly of TiO2 nanocrystals. Because of the high concentration of HF in the early stage, these TiO2 nanostructures were etched, and hollow structures formed on the surface. After the F− ions were effectively absorbed on the crystal surfaces, {001} facets appear and grow steadily. At the same time, the {101} facets also grow and meet the {101} facets from adjacent truncated tetragonal pyramids, causing coalescence of these facets and formation of nanospheres with dominant {001} facets. With further extension of the reaction time, single‐crystal {001} facets of hierarchical TiO2 nanospheres are dissolved and TiO2 nanospheres with dominant {101} facets are obtained. The photocatalytic activities of the hierarchical TiO2 nanospheres were evaluated and found to be closely related to the exposed {001} facets. Owing to the special hierarchical architecture and high percentage of exposed {001} facets, the TiO2 nanospheres exhibit much enhanced photocatalytic efficiency (almost fourfold) compared to P25 TiO2 as a benchmark material. This study provides new insight into crystal‐facet engineering of anatase TiO2 nanostructures with high percentage of {001} facets as well as opportunities for controllable synthesis of 3D hierarchical nanostructures.
Organocatalytic Asymmetric Conjugate Addition of 3‐Monosubstituted Oxindoles to (E)‐1,4‐Diaryl‐2‐buten‐1,4‐diones: A Strategy for the Indirect Enantioselective Furanylation and Pyrrolylation of 3‐Alkyloxindoles
Authors: Liao Yu‐Hua , Liu Xiong‐Li , Wu Zhi‐Jun , Du Xi‐Lin , Zhang Xiao‐Mei , Yuan Wei‐Cheng 
Published: April 2012

AbstractAn asymmetric conjugate addition of 3‐monosubstituted oxindoles to a range of (E)‐1,4‐diaryl‐2‐buten‐1,4‐diones, catalyzed by commercially available cinchonine, is described. This organocatalytic asymmetric reaction affords a broad range of 3,3′‐disubstituted oxindoles that contain a 1,4‐dicarbonyl moiety and vicinal quaternary and tertiary stereogenic centers in high‐to‐excellent yields (up to 98 %), with excellent diastereomeric and moderate‐to‐high enantiomeric ratios (up to 99:1 and 95:5, respectively). Subsequently, cyclization of the 1,4‐dicarbonyl moiety in the resultant Michael adducts under different Paal–Knorr conditions results in two new kinds of 3,3′‐disubstituted oxindoles—3‐furanyl‐ and 3‐pyrrolyl‐3‐alkyl‐oxindoles—in high yields and good enantioselectivities. Notably, the studies presented here sufficiently confirm that this two‐step strategy of sequential conjugate addition/Paal–Knorr cyclization is not only an attractive method for the indirect enantioselective heteroarylation of 3‐alkyloxindoles, but also opens up new avenues toward asymmetric synthesis of structurally diverse 3,3′‐disubstituted oxindole derivatives.
ChemInform Abstract: PbCa2[Al8O15] with a Novel Three‐Dimensional Aluminate Anion.
Authors: Artner Christine , Weil Matthias 
Published: April 2012

AbstractColorless single crystals of the title compound are obtained from a mixture of 2PbCO3·Pb(OH)2, CaCO3, and TeO2 in a corundum crucible (wall reaction, 1233 K, 6 h).
ChemInform Abstract: Why MnIn2O4 Spinel Is Not a Transparent Conducting Oxide?
Authors: Martinez‐Lope M. J. , Retuerto M. , de la Calle C. , Porcher Florence , Alonso J. A. 
Published: April 2012

AbstractMnIn2O4 is prepared by the citrate method starting with stoichiometric amounts of In2O3 and MnCO3 dissolved in citric acid and HNO3.
ChemInform Abstract: Strong Kleinman‐Forbidden Second Harmonic Generation in Chiral Sulfide: La4InSbS9.
Authors: Zhao Hua‐Jun , Zhang Yong‐Fan , Chen Ling 
Published: April 2012

AbstractThe new chiral compounds Ln4InSbS9 (Ln: La, Pr, Nd) are synthesized by solid state reaction of stoichiometric mixtures of the elements (950 °C, 4 d).
ChemInform Abstract: Co3O4 Nanowires as High Capacity Anode Materials for Lithium Ion Batteries.
Authors: Yao Yiayin , Xin Xing , Zhang Yiming , Wang Jun , Liu Zhaoping , Xu Xiaoxiong 
Published: April 2012

AbstractCoC2O4·2H2O nanowires are precipitated from aqueous solutions of CoSO4 and H2C2O4 using polyvinyl alcohol.
ChemInform Abstract: Synthesis, Crystal Structure, and Electrode Characteristics of LiMnPO4(OH) Cathode for Lithium Batteries.
Authors: Yang Yang , Hirayama Masaaki , Yonemura Masao , Kanno Ryoji 
Published: April 2012

AbstractThe title compound is synthesized by ball milling of MnPO4·H2O and LiNO3 in the molar ratio 1:4 (2 h), followed by heating in air at 200 °C.
ChemInform Abstract: Atomic Layer Deposition Synthesis of Platinum—Tungsten Carbide Core—Shell Catalysts for the Hydrogen Evolution Reaction.
Authors: Hsu Irene J. , Kimmel Yannick C. , Jiang Xiaoqiang , Willis Brian G. , Chen Jingguang G. 
Published: April 2012

AbstractWC powders are prepared by solid state reaction of WO3 and carbon black at 1300 °C in the presence of KCl and a Ni catalyst.
ChemInform Abstract: Spectroscopy, Thermal Analysis and Crystal Structure of a Novel Diammonium Bis[hexaaquazinc(I)] Decavanadate Tetrahydrate.
Authors: Udomvech Anurak , Kongrat Prachit , Pakawatchai Chaveng , Phetmung Hirihattaya 
Published: April 2012

Abstract(NH4)2 [Zn(H2O)6] 2V10O28·4H2O is precipitated from an aqueous solutions of Zn(OAc)2 and NH4VO3 (pH 6, 25 °C, 14 d; 72% yield).
ChemInform Abstract: The Highest Eleven‐Connected Multidimensional Framework Constructed by α‐Metatungstate Clusters and Transition Metal Complexes.
Authors: Zhang Zheyu 
Published: April 2012

Abstract(NH4)5 [Ag5(L)2(H2O)8 (H2W12O40)]·H2O (L: pyridine‐3,5‐dicarboxylate dianion) is synthesized from a mixture of (NH4)6[H2W12O40], AgNO3, pyridine‐3,5‐dicarboxylic acid, HNO3, and water (pH 3.5, 65 °C, 45 min, 42% yield).
ChemInform Abstract: A Novel Diniobium‐Inserted Sandwich‐Type Polyoxometalate K6H3 [Nb2K(H2O)4 (A‐α‐SiW9O34)2] ·23H2O Constructed from Two Trivacant Keggin [A‐α‐SiW9O34]10‐ Moieties Linked via a V‐Shaped {Nb2K} Group.
Authors: Zhang Dongdi , Li Suzhi , Wang Jingping , Niu Jingyang 
Published: April 2012

AbstractThe new title compound is synthesized from a mixture of Na10[A‐α‐SiW9O34], K7HNb6O19, H2O2, HCl, and H2O (pH 4, 1 h, 55% yield).
ChemInform Abstract: Synthesis, Structure, and Characterization of a Novel Selenidoarsenate: Incorporation of [Mn(phen)2]2+ Cations into 1∞ [AsIII2Se3(Se2)]2‐ Chains.
Authors: Jiang Hao , Wang Xin , Sheng Tian‐Lu , Hu Sheng‐Min , Fu Rui‐Biao , Wu Xin‐Tao 
Published: April 2012

AbstractThe new inorganic‐organic hybrid solid [Mn(phen)2][As2Se3(Se2)] is hydrothermally synthesized from a mixture of As, Mn, Se, en, and phen in H2O (autoclave, 423 K, 5 d, 46% yield).
ChemInform Abstract: An Organic—Inorganic Hybrid Hexa‐Nickel Substituted Sandwich‐Type Germanotungstate [enH2]2[Ni(en)2]2{ [Ni6(en)2(H2O)2] [B‐α‐GeW9O34]2}14H2O.
Authors: Niu Weijia , Shi Dongying , Zhao Junwei , Cai Xiaomeng , Chen Lijuan 
Published: April 2012

AbstractThe new title compound is hydrothermmally synthesized from a mixture of K8Na2[A‐α‐GeW9O34], NiSO4, en, and H2O (autoclave, 160 °C, 5 d, 35% yield).
ChemInform Abstract: Catalytic Enantioselective Addition of MeMgBr and Other Grignard Reagents to Aldehydes.
Authors: Fernandez‐Mateos Emilio , Macia Beatriz , Ramon Diego J. , Yus Miguel 
Published: April 2012

AbstractUnprecedented yields and enantioselectivities are achieved in the addition of Grignard reagents to aldehydes in the presence of a hydroxy(phenyl)methylbinaphthol catalyst.
ChemInform Abstract: Application of Proline‐Functionalized 1,2‐Diphenylethane‐1,2‐diamine (DPEN) in Asymmetric Transfer Hydrogenation of Ketones.
Authors: Manville Charles V. , Docherty Gordon , Padda Ranbir , Wills Martin 
Published: April 2012

AbstractEnantiomerically pure ligands (I) and (II) containing a combination of proline and DPEN moieties are synthesized and successfully employed in the asymmetric transfer hydrogenation of ketones.
ChemInform Abstract: Synthesis of Some New 3,4‐Disubstituted Pyrroles and Pyrazoles from (E)‐1‐(Arylsulfonylethylsulfonyl)‐2‐arylethene.
Authors: Padmaja A. , Syamaiah K. , Muralikrishna A. , Padmavathi V. 
Published: April 2012

AbstractThe sulfonyl activated (E)‐olefin (I) is used as synthon for novel pyrrole and pyrazole derivatives by 1,3‐dipolar cycloaddition of tosylmethyl isocyanide (II) and diazomethane (IV), respectively.
ChemInform Abstract: Enantioselective Ir(I)‐Catalyzed Carbocyclization of 1,6‐Enynes by the Chiral Counterion Strategy.
Authors: Aubert Corinne , et al. et al. 
Published: April 2012

AbstractIt allows a new and efficient access to various optically active azabicyclo[4.1.0]heptenes.
ChemInform Abstract: Investigations into the Regioselectivity of Fischer Indole and Friedlaender Quinoline Syntheses with Octahydroisobenzofuran and Octahydroisoindole Derivatives.
Authors: Bender Matthias , Christoffers Jens 
Published: April 2012

AbstractThe regioselectivities of Fischer and Friedlaender syntheses with a mixture of cis and trans isoindoles (X) show that the trans‐configurated isomer leads exclusively to linear products [cf.
ChemInform Abstract: Cyclopropanation of 5‐(Allyloxymethyl)‐ and 5‐(Methallyloxymethyl)‐5‐ethyl‐1,3‐dioxanes with Methyl Diazoacetate.
Authors: Ivanova L. N. , Lobov A. N. , Fatykhov A. A. , Sultanova R. M. , Zlotskii S. S. , Dokichev V. A. 
Published: April 2012

AbstractCyclopropane‐containing 1,3‐dioxanes are regioselectively obtained in reactions of 5‐(allyloxymethyl)‐ and 5‐(methallyloxymethyl)‐1,3‐dioxanes with methyl diazoacetate.
ChemInform Abstract: A Novel and Selective Oxidation of Benzylic Alcohols with Polymer‐Supported Periodic Acid under Mild Aprotic Conditions.
Authors: Pourali Ali Reza , Tabaean Mehrosadat , Nazifi S. Mohamad Reza 
Published: April 2012

AbstractSecondary benzylic and non‐benzylic alcohols give only low yields.
ChemInform Abstract: Highly Efficient and Chemoselective Ruthenium‐Catalyzed Hydrosilylation of Aldehydes.
Authors: Do Youngshil , Han Junghoon , Rhee Young Ho , Park Jaiwook 
Published: April 2012

AbstractThe hydrosilylation of a diversity of aromatic and aliphatic aldehydes with triethylsilane in the presence of a dimeric ruthenium catalyst (fluorescent light activation) proceeds smoothly to afford the corresponding silyl ethers, e.g. (III) and (V).
ChemInform Abstract: Highly Enantioselective Aldol Reactions Using a tropos Dibenz[c,e]azepine Organocatalyst.
Authors: Lygo Barry , Davison Christopher , Evans Timothy , Gilks James A. R. , Leonard John , Roy Claude‐Eric 
Published: April 2012

AbstractA newly synthesized chiral primary tertiary diamine salt possessing a dibenz[c,e]azepine ring, promotes highly enantioselective crossed‐aldol reactions between cyclohexanone (I) and a series of aromatic aldehydes.
ChemInform Abstract: Solvent‐Free Asymmetric Aldol Reaction Organocatalyzed by (S)‐Proline‐Containing Thiodipeptides under Ball‐Milling Conditions.
Authors: Hernandez Jose G. , Garcia‐Lopez Victor , Juaristi Eusebio 
Published: April 2012

AbstractNovel proline containing dipeptides and thiodipeptides are prepared and applied as catalysts for the asymmetric aldol reaction under solvent‐free conditions using the High Speed Ball‐Milling technique.
ChemInform Abstract: An Efficient Method for the Preparation of Tertiary Esters by Palladium‐Catalyzed Alkoxycarbonylation of Aryl Bromides.
Authors: Xin Zhuo , Goegsig Thomas M. , Lindhardt Anders T. , Skrydstrup Troels 
Published: April 2012

AbstractUsing a special two‐chamber technique, CO is generated in situ from fluorene carbonyl chloride.
ChemInform Abstract: Iron‐Catalyzed C—H and C—C Bond Cleavage: A Direct Approach to Amides from Simple Hydrocarbons.
Authors: Qin Chong , Zhou Wang , Chen Feng , Ou Yang , Jiao Ning 
Published: April 2012

AbstractA novel Fe‐catalyzed oxidative transformation of bisarylmethanes or related benzylic hydrocarbons to amides is developed.
ChemInform Abstract: Ultrathin Platinum Nanowire Catalysts for Direct C—N Coupling of Carbonyls with Aromatic Nitro Compounds under 1 Bar of Hydrogen.
Authors: Lu Jianmei , et al. et al. 
Published: April 2012

AbstractTime‐dependent analysis, ReactIR spectroscopy, and DFT calculations reveal that the reaction proceeds through a different mechanism than traditional “reductive amination”.
ChemInform Abstract: Iridium‐Catalyzed Allylic Vinylation and Asymmetric Allylic Amination Reactions with o‐Aminostyrenes.
Authors: Ye Ke‐Yin , He Hu , Liu Wen‐Bo , Dai Li‐Xin , Helmchen Guenter , You Shu‐Li 
Published: April 2012

AbstractThe Ir‐catalyzed treatment of o‐aminostyrenes with allylic carbonates results in formation of dienes of type (III).
ChemInform Abstract: Copper(II)‐Catalyzed Hydrosilylation of Ketones Using Chiral Dipyridylphosphane Ligands: Highly Enantioselective Synthesis of Valuable Alcohols.
Authors: Yu Feng , Zhou Ji‐Ning , Zhang Xi‐Chang , Sui Yao‐Zong , Wu Fei‐Fei , Xie Lin‐Jie , Chan Albert S. C. , Wu Jing 
Published: April 2012

AbstractThe new copper‐catalyzed asymmetric hydrosilylation system gives excellent enantioselectivities (up to 98% e.e.) and exceeds high turnover rates (up to 50 000 S/L molar ratio in 50 min reaction time).
ChemInform Abstract: Catalytic 1,3‐Difunctionalization of Organic Backbones Through a Highly Stereoselective, One‐Pot, Boron Conjugate‐Addition/Reduction/Oxidation Process.
Authors: Sole Cristina , Tatla Amolak , Mata Jose A. , Whiting Andrew , Gulyas Henrik , Fernandez Elena 
Published: April 2012

AbstractStarting from the α,β‐unsaturated ketone (I) or the α,β‐unsaturated imines (VI), three‐step routes are developed involving boron conjugate addition, reduction, and oxidation to give the syn‐1,3‐diol (IV) or syn‐1,3‐amino alcohols, respectively.
ChemInform Abstract: Efficient Organocatalytic Cross‐Aldol Reaction Between Aliphatic Aldehydes Through Their Functional Differentiation.
Authors: Kano Taichi , Sugimoto Hisashi , Maruoka Keiji 
Published: April 2012

AbstractIn the presence of the amine BPA, the syn adducts are mainly formed, while with L‐proline the anti products are predominantly obtained.
ChemInform Abstract: Chiral Zinc‐Catalyzed Asymmetric α‐Alkylallylation and α‐Chloroallylation of Aldehydes.
Authors: Kobayashi Shu , Endo Toshimitsu , Ueno Masaharu 
Published: April 2012

AbstractTreatment of aldehydes with α‐substituted boronic esters produces a variety of homoallylic alcohols bearing 2 neighboring stereogenic centers with high diastereo‐ and enantioselectivity.
ChemInform Abstract: Enantioselective Stetter Reactions of Enals and Modified Chalcones Catalyzed by N‐Heterocyclic Carbenes.
Authors: Fang Xinqiang , Chen Xingkuan , Lv Hui , Chi Yonggui Robin 
Published: April 2012

AbstractThe asymmetric Stetter reaction of β‐alkyl (I), β‐aryl (IV) as well as β,β‐disubstituted enals (VI) with 2‐alkylidene‐1,3‐dicarbonyl compounds (II), (VII) or (IX) proceeds smoothly in the presence of a chiral triazolium‐based NHC organocatalyst.
ChemInform Abstract: Reversed‐Polarity Synthesis of Diaryl Ketones via Palladium‐Catalyzed Cross‐Coupling of Acylsilanes.
Authors: Schmink Jason R. , Krska Shane W. 
Published: April 2012

AbstractAcylsilanes (II) are used reactions with aryl bromides (I) to give unsymmetrical diaryl ketones (III).
ChemInform Abstract: Base‐Mediated Stereospecific Synthesis of Aryloxy and Amino Substituted Ethyl Acrylates.
Authors: Kabir M. Shahjahan , Namjoshi Ojas A. , Verma Ranjit , Lorenz Michael , Tiruveedhula V. V. N. Phani Babu , Monte Aaron , Bertz Steven H. , Schwabacher Alan W. , Cook James M. 
Published: April 2012

AbstractAn efficient stereospecific method to prepare (E)‐ and (Z)‐configurated title compounds is reported.
ChemInform Abstract: The Synthesis and Tuberculostatic Activity of Benzenesulfonohydrazide Derivatives.
Authors: Wisterowicz Krystyna , Gobis Katarzyna , Foks Henryk , Augustynowicz‐Kopec Ewa 
Published: April 2012

AbstractThe compounds (III) are screened in vitro for their activity against the Mtb H37Rv standard strain and two strains isolated from tuberculotic patients, sensitive strain 192 and resistant strain 210.
ChemInform Abstract: Reusable and Efficient CoCl2·6H2O/Cationic 2,2′‐Bipyridyl System‐Catalyzed S‐Arylation of Aryl Halides with Thiols in Water under Air.
Authors: Lan Ming‐Tzu , Wu Wei‐Yi , Huang Shao‐Hsien , Luo Kai‐Luen , Tsai Fu‐Yu 
Published: April 2012

AbstractCoupling reactions of aryl halides with thiols result in the formation of thioethers.
ChemInform Abstract: (NHC)Palladium Complexes from Hydroxy‐Functionalized Imidazolium Salts as Catalyst for the Microwave‐Accelerated Fluorine‐Free Hiyama Reaction.
Authors: Penafiel Itziar , Pastor Isidro M. , Yus Miguel , Esteruelas Miguel A. , Olivan Montserrat , Onate Enrique 
Published: April 2012

AbstractCatalyst (I), readily available from the imidazolium salt and Pd(O‐Ac)2, is isolated as an air‐stable greyish solid, which exists in solution at room temperature as a mixture of diastereomers.
ChemInform Abstract: Nickel‐Catalyzed Suzuki—Miyaura Reaction of Aryl Fluorides.
Authors: Tobisu Mamoru , Xu Tian , Shimasaki Toshiaki , Chatani Naoto 
Published: April 2012

AbstractTwo protocols for the title reaction are developed, the first by employing a metal fluoride‐cocatalyst and the second by utilization of an ortho‐directing group.
ChemInform Abstract: Synthesis of Substituted α‐Tetralones and Substituted 1‐Naphthols via Regioselective Ring Expansion of 1‐Acyl‐1‐indanol Skeleton.
Authors: Yang Te‐Fang , Wang Kuan‐Yu , Li Hsuan‐Wei , Tseng Yang‐Chan , Lien Tai‐Chen 
Published: April 2012

AbstractStarting from indanones, a straightforward synthesis of substituted 1‐naphthols (X) is developed.
ChemInform Abstract: Lewis Base Assisted Broensted Base Catalysis: Direct Asymmetric Allylic Alkylation of Indenes.
Authors: Chui Hai‐Lei , Sun Xun‐Hao , Jiang Lin , Dong Lin , Chen Yin‐Chun 
Published: April 2012

AbstractThe first allylic alkylation of indene derivatives with Morita—Baylis—Hillman carbonates (I) is catalyzed by (DHQD)2‐AQN to give the desired products with high enantioselectivities but only moderate yields.
ChemInform Abstract: Synthesis of Non‐Steroidal Estrogen Receptor Antagonists R1128 A, B, C, and D via an Oxazoline‐Promoted Iterative ortho‐Lithiation Strategy.
Authors: Fukuda Tsutomu , Fukushima Koichiro , Sanai Susumu , Iwao Masatomo 
Published: April 2012

AbstractThe average overall yield of title compounds (VII) is approximately 36%.
ChemInform Abstract: Copper‐Catalyzed Skeletal Rearrangement of O‐Propargylic Alkylaldoximes via N—O Bond Cleavage.
Authors: Nakamura Itaru , Iwata Tomoki , Zhang Dong , Terada Masahiro 
Published: April 2012

AbstractAn acidic proton at the α‐position of the oxime group is required for the rearrangement.
ChemInform Abstract: Functionalized 2,3‐Dihydrofurans via Palladium‐Catalyzed Oxyarylation of α‐Allyl‐β‐ketoesters.
Authors: Cacchi Sandro , Fabrizi Giancarlo , Goggiamani Antonella , Iazzetti Antonia , Madec David , Poli Giovanni , Prestat Guillaume 
Published: April 2012

AbstractAryl bromides and chlorides as well as heteroaryl halides can be used and the new method tolerates a range of functional groups.
ChemInform Abstract: Enantioenriched Formation of Synthons of 1,5‐Hexadiene Bis‐Epoxides for Construction of Nonracemic cis‐ and trans‐2,5‐Disubstituted Tetrahydrofurans.
Authors: Williams David R. , De Ramkrishna 
Published: April 2012

AbstractThe pathway to the enantioenriched bis‐epoxides includes the Sharpless asymmetric epoxidation of heptadienol and the mild epoxidation of the resulting epoxy alkenes (I) as the key step via high asymmetric induction by using the Katsuki titanium salalen catalyst.
ChemInform Abstract: Taming the Friedel—Crafts Reaction: Organocatalytic Approach to Optically Active 2,3‐Dihydrobenzofurans.
Authors: Albrecht Lukasz , Ransborg Lars Krogager , Lauridsen Vibeke , Overgaard Mette , Zweifel Theo , Joergensen Karl Anker 
Published: April 2012

AbstractDiversity‐orientated one‐pot reaction cascades are reported for the preparation of chiral trans‐2,3‐disubstituted title compounds having three contiguous stereocenters.
ChemInform Abstract: The Marriage of Organocatalysis with Metal Catalysis: Access to Multisubstituted Chiral 2,5‐Dihydropyrroles by Cascade Iminium/Enamine—Metal Cooperative Catalysis.
Authors: Sun Wangsheng , Zhu Gongming , Hong Liang , Wang Rui 
Published: April 2012

AbstractAn unprecedent aza‐Michael/carbocyclization reaction combining cheap and readily available α,β‐unsaturated aldehydes and N‐tosyl propargylamines is discovered.
ChemInform Abstract: Organocatalyzed Enantioselective Aldol Reaction of 1H‐Pyrrole‐2,3‐diones.
Authors: Bhanushali Mayur , Zhao Cong‐Gui 
Published: April 2012

AbstractCross aldol reaction between 4,5‐dioxopyrroles (I) and ketones (II) and (IV) in the presence of chiral catalysts is investigated.
ChemInform Abstract: One‐Pot Synthesis of 2,5‐Bis(3‐indolyl)‐3,4‐dinitrothiophene, 3‐(2‐Chloro‐3,4‐dinitrothien‐2‐yl)indole and Related Congeners.
Authors: Fasfous Ismail I. , El‐Abadelah Mustafa M. , Sabri Salim S. 
Published: April 2012

AbstractFor the presented reaction the compound (II) is generated in situ.
ChemInform Abstract: One‐Pot Multicomponent Synthesis of Polysubstituted Indolizines.
Authors: Mao Zhenjun , Li Xuejian , Lin Xufeng , Lu Ping , Wang Yanguang 
Published: April 2012

AbstractA four‐component tandem approach to polysubstituted indolizines under metal‐free and mild aerobic conditions is reported.
ChemInform Abstract: Synthesis and Stereochemistry of Some Novel Dihydropyrrolo[3,4‐c]pyrazoles.
Authors: Dueruest Yasar , Yildirim Muhammet , Fronczek Chris F. , Fronczek Frank R. 
Published: April 2012

AbstractNovel pyrrolopyrazoles are synthesized by cycloaddition reaction of chiral (1‐phenylethyl)maleimide (III) and nitrilimines.
ChemInform Abstract: Efficient Synthesis of Spiroisoxazoline Oxindoles.
Authors: Ribeiro Carlos J. A. , Kumar S. Praveen , Moreira Rui , Santos Maria M. M. 
Published: April 2012

AbstractThe title compounds (III) and (IV) are prepared by 1,3‐dipolar cycloaddition of in situ generated nitrile oxides to indolinones, where zinc is used as the dehydrochlorinating agent.
ChemInform Abstract: Hydroxyapatite‐Supported Copper(II)‐Catalyzed Azide—Alkyne [3 + 2] Cycloaddition with Neither Reducing Agents Nor Bases in Water.
Authors: Masuyama Yoshiro , Yoshikawa Kazuki , Suzuki Noriyuki , Hara Kenji , Fukuoka Atsushi 
Published: April 2012

AbstractThe procedure can be generally carried out under air in water.
ChemInform Abstract: One‐Pot Three‐Component Reaction for Synthesis of Highly Substituted Pyrazolo[1,2‐a][1,2,4]triazole Derivatives.
Authors: Sajadikhah Seyed S. , Maghsoodlou Malek T. , Hazeri Nourallah , Habibi‐Khorassani Sayyed M. 
Published: April 2012

AbstractThe efficient, simple, and mild synthesis of the title compounds (IV) includes a very easy work‐up procedure.
ChemInform Abstract: Polarity Inversion of Donor—Acceptor Cyclopropanes: Disubstituted δ‐Lactones via Enantioselective Iridium Catalysis.
Authors: Moran Joseph , Smith Austin G. , Carris Ryan M. , Johnson Jeffrey S. , Krische Michael J. 
Published: April 2012

AbstractIn the presence of IRC, the donor—acceptor cyclopropanes (I) and (VI) undergo polarity inversion and react with alcohols and aldehydes to afford hydroxycarboxylic acid esters of type (III)/(VII).
ChemInform Abstract: Synthesis and Reactivity of Novel 1H‐Isochromeno[3,4‐d]imidazol‐1‐onium Salts.
Authors: Roman Bart I. , Guegan Marie , De Vos Nils , Maton Cedric , Stevens Christian V. 
Published: April 2012

AbstractThe nature of the anion has a major influence on the melting point of the title imidazolium salts.