bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: A Metal‐Free Oxidative Esterification of the Benzyl C—H Bond.
Authors: Feng Jie , Liang Shuai , Chen Shan‐Yong , Zhang Ji , Fu Song‐Sen , Yu Xiao‐Qi 
Published: August 2012

AbstractOxidative esterification of benzylic C—H bonds with a wide variety of aromatic and aliphatic carboxylic acids proceeds smoothly by use of tert‐butyl hydroperoxide in the presence of catalytic amounts of tetrabutylammonium iodide.
ChemInform Abstract: Unprecedented Synthesis of Iron—NHC Complexes by C—H Activation of Imidazolium Salts. Mild Catalysts for Reduction of Sulfoxides.
Authors: Cardoso Joao M. S. , Royo Beatriz 
Published: August 2012

AbstractA novel bidentate iron complex is prepared, which efficiently catalyzes the reduction of sulfoxides (I) with phenylsilane under mild conditions.
ChemInform Abstract: Chiral Phosphoric Acid‐Catalyzed Asymmetric Oxidation of Aryl Alkyl Sulfides and Aldehyde‐Derived 1,3‐Dithianes: Using Aqueous Hydrogen Peroxide as the Terminal Oxidant.
Authors: Liu Zhao‐Min , Zhao Hua , Li Mei‐Qiu , Lan Yu‐Bao , Yao Qi‐Bo , Tao Jing‐Chao , Wang Xing‐Wang 
Published: August 2012

AbstractThe present protocol proceeds by a direct, enantioselective sulfoxidation process and not by kinetic resolution.
ChemInform Abstract: Copper‐Catalyzed C‐Alkylation of Secondary Alcohols and Methyl Ketones with Alcohols Employing the Aerobic Relay Race Methodology.
Authors: Liao Shiheng , Yu Kangkang , Li Qiang , Tian Haiwen , Zhang Zhengping , Yu Xiaochun , Xu Qing 
Published: August 2012

AbstractA practical and advantageous ligand‐free method for the title reaction is developed by using simple alcohols and green alkylating substrates.
ChemInform Abstract: Cascade Synthesis of Bis‐N‐sulfonylcyclobutenes via Cu(I)/Lewis Acid‐Catalyzed (3 + 2)/(2 + 2) Cycloadditions: Observation of Aggregation‐Induced Emission Enhancement from Restricted C=N Photoisomerization.
Authors: Namitharan Kayambu , Pitchumani Kasi 
Published: August 2012

AbstractAliphatic sulfonyl azides or aliphatic alkynes give no products.
ChemInform Abstract: Cu(I)‐Catalyzed Annulation for the Synthesis of Substituted Naphthalenes Using o‐Bromobenzaldehydes and β‐Ketoesters as Substrates.
Authors: Malakar Chandi C. , Sudheendran Kavitha , Imrich Hans‐Georg , Mika Sabine , Beifuss Uwe 
Published: August 2012

AbstractA simple, mild, and efficient one‐pot synthesis of the title compounds from easily accessible starting materials is developed.
ChemInform Abstract: Rhodium/Copper‐Catalyzed Annulation of Benzimides with Internal Alkynes: Indenone Synthesis Through Sequential C—H and C—N Cleavage.
Authors: Li Bi‐Jie , Wang Hao‐Yuan , Zhu Qi‐Lei , Shi Zhang‐Jie 
Published: August 2012

AbstractThe title synthesis uses easily available benzimide derivatives as starting materials and involves an uncommon acylation of organorhodium(III), which is essential for the C‐H cleavage.
ChemInform Abstract: Simple Gold‐Catalyzed Synthesis of Benzofulvenes—gem‐Diaurated Species as “Instant Dual‐Activation” Precatalysts.
Authors: Hashmi A. Stephen K. , Braun Ingo , Noesel Pascal , Schaedlich Johannes , Wieteck Marcel , Rudolph Matthias , Rominger Frank 
Published: August 2012

AbstractThe product (VI) is unstable during the work‐up and the isolation.
ChemInform Abstract: A Bulky Biaryl Phosphine Ligand Allows for Palladium‐Catalyzed Amidation of Five‐Membered Heterocycles as Electrophiles.
Authors: Su Mingjuan , Buchwald Stephen L. 
Published: August 2012

AbstractThe novel bulky ligand (I) significantly facilitates the reaction of five‐membered heteroaryl bromides with aromatic, heteroaromatic, or aliphatic carboxylic amides.
ChemInform Abstract: Tuning of Regioselectivity in Inorganic Iodide‐Catalyzed Alkylation of 2‐Methoxyfurans via Electronic and Steric Effects.
Authors: Chen Jie , Ni Shengjun , Ma Shengming 
Published: August 2012

AbstractThe appropriate choice of alkylating reagent and catalyst allows for regioselective alkylation of 2‐methoxyfurans at either the 3‐ or the 5‐position.
ChemInform Abstract: Chemistry of Polyhalogenated Nitrobutadienes. Part 11. ipso‐Formylation of 2‐Chlorothiophenes under Vilsmeier—Haack Conditions.
Authors: Vogt Eva‐Janina , Zapol'skii Viktor A. , Nutz Eva , Kaufmann Dieter E. 
Published: August 2012

AbstractSubstitution of the chloro group by CHO (ipso‐formylation) is observed when the thiophene derivatives (I) react under Vilsmeyer—Haack conditions.
ChemInform Abstract: Preparation of 4,7‐Dibromobenzo[b]thiophene as a Versatile Building Block and Synthetic Application to a Bis(ethynylthienyl)oligoarene System.
Authors: Yamamoto Takuya , Katsuta Hiroshi , Toyota Kozo , Iwamoto Takeaki , Morita Noboru 
Published: August 2012

AbstractBenzo[b]thiophene and thieno[3,2‐b]thiophenes (II) and (IV) are prepared by AuCl‐catalyzed thiophene annulation from the corresponding tertbutylsulfanyl‐ethinyl derivatives (I) and (III).
ChemInform Abstract: The Use of Sulfur Ylides in the Synthesis of 3‐Alkyl(aryl)thio‐4‐trifluoromethylpyrroles from Mesoionic 4‐Trifluoroacetyl‐1,3‐oxazolium‐5‐olates.
Authors: Saijo Ryosuke , Kawase Masami 
Published: August 2012

AbstractA novel synthesis of highly substituted pyrroles is achieved by reaction of mesoionic 1,3‐oxazolium‐5‐olates with a variety of S‐ylides.
ChemInform Abstract: Chiral Guanidine‐Catalyzed Asymmetric Direct Vinylogous Michael Reaction of α,β‐Unsaturated γ‐Butyrolactams with Alkylidene Malonates.
Authors: Yang Yang , Dong Shunxi , Liu Xiaohua , Lin Lili , Feng Xiaoming 
Published: August 2012

AbstractA novel bifunctional guanidine catalyst is prepared and successfully applied in the asymmetric direct vinylogous Michael reaction of lactam (I) with malonates (II).
ChemInform Abstract: Ethynyl Benziodoxolones for the Direct Alkynylation of Heterocycles: Structural Requirement, Improved Procedure for Pyrroles, and Insights into the Mechanism.
Authors: Brand Jonathan P. , Chevalley Clara , Scopelliti Rosario , Waser Jerome 
Published: August 2012

AbstractA full account on the recently briefly published title investigation is presented, containing an improved procedure for alkynylation of pyrroles using pyridine as an additive and the first examples for alkynylation of thiophenes.
ChemInform Abstract: Palladium‐Catalyzed Dehydrogenative β′‐Functionalization of β‐Keto Esters with Indoles at Room Temperature.
Authors: Leskinen Mikko V. , Yip Kai‐Tai , Valkonen Arto , Pihko Petri M. 
Published: August 2012

AbstractThe title reaction proceeds with high C‐3‐selectivity for the indole and β′‐selectivity for the β‐keto ester.
ChemInform Abstract: PANI‐HBF4: A Reusable Polymer‐Based Solid Acid Catalyst for Three‐Component, One‐Pot Synthesis of 3‐Substituted Amino Methyl Indoles under Solvent‐Free Conditions.
Authors: Devi Chebrolu Lavanya , Rao Vaidya Jayathirtha , Palaniappan Srinivasan 
Published: August 2012

AbstractThe catalyst can be recycled by filtration and reused for at least six runs without loss of activity.
ChemInform Abstract: Synthesis and Pharmacological Evaluation of 3‐Amino‐1‐(5‐indanyloxy)‐2‐propanol Derivatives as Potent Dodium Channel Blockers for the Treatment of Stroke.
Authors: Seki Maki , Tsuruta Osamu , Aoyama Yukio , Soejima Aki , Shimada Hiroshi , Nonaka Hikaru 
Published: August 2012

AbstractThe 3‐amino‐1‐(5‐indanyloxy)‐2‐propanol derivative bearing a benzimidazole moiety (I) shows potent neuroprotective activity in a rat transient middle cerebral artery occlusion model and high binding affinity for neurotoxin receptor site 2 of the Na+ channels.
ChemInform Abstract: Benzylic Phosphates as Electrophiles in the Palladium‐Catalyzed Asymmetric Benzylation of Azlactones.
Authors: Trost Barry M. , Czabaniuk Lara C. 
Published: August 2012

AbstractThe phosphate leaving group and the reaction conditions are optimized for the different benzylic phosphates, depending on the electron‐density of the phenyl ring.
ChemInform Abstract: Regio‐ and Stereocontrolled Introduction of Secondary Alkyl Groups to Electron‐Deficient Arenes Through Copper‐Catalyzed Allylic Alkylation.
Authors: Makida Yusuke , Ohmiya Hirohisa , Sawamura Masaya 
Published: August 2012

AbstractIn the title reaction allylic substrates with a carbonate or acetate leaving group instead of the phosphate group are not reactive.
ChemInform Abstract: Synthesis of 6‐Sulfamoylsaccharin and Study of Its Reactivity in Alkylation Reactions.
Authors: Ivanova E. M. , Simin E. Yu. , Vozny I. V. , Trapencieris P. , Zalubovskis R. 
Published: August 2012

AbstractAn improved method for the preparation of 6‐sulfamoylsaccharin (IV) is developed.
ChemInform Abstract: Environmental Friendly Azide‐Alkyne Cycloaddition Reaction of Azides, Alkynes, and Organic Halides or Epoxides in Water: Efficient “Click” Synthesis of 1,2,3‐Triazole Derivatives by Cu Catalyst.
Authors: Liu Jianming , Liu Muwen , Yue Yuanyuan , Yao Meihuan , Zhuo Kelei 
Published: August 2012

AbstractFor the conversion of (I) to (III) or (IV) to (V), respectively, copper(II) acetate can also be used.
ChemInform Abstract: Metal‐Catalyzed One‐Pot Synthesis of Tetrazines Directly from Aliphatic Nitriles and Hydrazine.
Authors: Yang Jun , Karver Mark R. , Li Weilong , Sahu Swagat , Devaraj Neal K. 
Published: August 2012

AbstractThe method is also applicable to various unactivated nitriles to give either symmetrical or unsymmetrical tetrazines.
ChemInform Abstract: InCl3‐Promoted a Novel Prins Cyclization for the Synthesis of Hexahydro‐1H‐furo[3,4‐c]pyran Derivatives.
Authors: Reddy B. V. Subba , Sreelatha Marepally , Kishore Ch. , Borkar Prashant , Yadav J. S. 
Published: August 2012

AbstractA simple protocol allows the synthesis of cis‐fused hexahydrofuropyrans (III) as scaffolds of natural products.
ChemInform Abstract: Base‐Catalyzed Asymmetric Diels—Alder Reaction of 3‐Hydroxy‐2‐pyrone and Simple Aryl Vinyl Sulfoxide: Asymmetric Synthesis of Carbaketopyranoses.
Authors: Okamura Hiroaki , Urabe Fumiya , Hamada Toshiyuki , Iwagawa Tetsuo 
Published: August 2012

AbstractThe stereoselectivity is predominantly controlled by the catalyst and the conditions.
ChemInform Abstract: Cooperative Dienamine/Hydrogen‐Bonding Catalysis: Enantioselective Formal [2 + 2] Cycloaddition of Enals with Nitroalkenes.
Authors: Talavera Garazi , Reyes Efraim , Vicario Jose L. , Carrillo Luisa 
Published: August 2012

AbstractThe title synthesis is the first example of a cascade reaction involving the dienamine/iminium manifold.
ChemInform Abstract: Lewis Acid Catalyzed Intramolecular [4 + 2] and [3 + 2] Cross‐Cycloaddition of Alkynylcyclopropane Ketones with Carbonyl Compounds and Imines.
Authors: Bai Yu , Tao Weijie , Ren Jun , Wang Zhongwen 
Published: August 2012

AbstractThe Lewis acid‐regulated selective title cycloadditions are developed by using common starting materials and under mild conditions.
ChemInform Abstract: Electronically Unfavorable Addition of Electron‐Deficient Olefins to Isochromenylium Tetrafluoroborates Initiated by C‐1 O‐Glycosylation.
Authors: Yu Shu‐Yan , Hu Zhi‐Long , Zhang Hao , Wang Shaozhong , Yao Zhu‐Jun 
Published: August 2012

AbstractThe reaction between starting materials (I) and electron‐deficient alkenes is studied to yield polycyclic products diastereoselectively.
ChemInform Abstract: 2‐Amino‐3‐cyano‐4‐(5‐arylisoxazol‐3‐yl)‐4H‐chromenes: Synthesis and in vitro Cytotoxic Activity.
Authors: Akbarzadeh Tahmineh , Rafinejad Ali , Mollaghasem Javad Malekian , Safavi Maliheh , Fallah‐Tafti Asal , Pordeli Mahboobeh , Ardestani Sussan Kabudanian , Shafiee Abbas , Foroumadi Alireza 
Published: August 2012

AbstractStarting material (I) is prepared from ethyl 2,4‐dioxo‐4‐arylbutonate in three steps.
ChemInform Abstract: Catalytic Method for Synthesis of Benzopyrano[3,2‐c]chromene‐6,8‐dione Derivatives by Heteropoly Acids.
Authors: Motamedi Radineh , Baghbani Saeede , Bamoharram Fatemeh F. 
Published: August 2012

AbstractAn environmentally friendly synthesis of title compounds becomes possible using heteropolyacid in boiling ethanol.
ChemInform Abstract: Facile Approach for the Synthesis of 2,3,4,9‐Tetrahydro‐1H‐xanthen‐1‐ones and 8,9,10,12‐Tetrahydro‐11H‐benzo[a]xanthen‐11‐ones via Trapping of o‐Quinone Methides.
Authors: Osyanin Vitaly A. , Ivleva Elena A. , Klimochkin Yuri N. 
Published: August 2012

AbstractAn efficient synthesis is readily achieved by trapping of o‐quinone methides, generated from o‐hydroxybenzyl alcohols (II) or o‐hydroxybenzylamines, e.g. (IV), with aminocyclohexenones (I).
ChemInform Abstract: Synthesis of Some New 1,4‐Dihydropyridine Derivatives Through a Facile One‐Pot Hantzsch Condensation Catalyzed by Triethylamine.
Authors: Ghalem Wassima , Boulcina Raouf , Debache Abdelmadjid 
Published: August 2012

AbstractThe reaction is conducted under solvent‐free conditions and has a simple work‐up procedure.
ChemInform Abstract: Design and Synthesis of 2‐Iminothiazolidin‐4‐one Moiety‐Containing Compounds as Potent Antiproliferative Agents.
Authors: Zhai Xin , Li Wei , Chen Dong , Lai Ruiwei , Liu Jun , Gong Ping 
Published: August 2012

AbstractThe highest antitumor activity is found for derivative (IVc).
ChemInform Abstract: Friedlaender Synthesis of Polysubstituted Quinolines and Naphthyridines Promoted by Propylphosphonic Anhydride (T3P®) under Mild Conditions.
Authors: Jida Mouhamad , Deprez Benoit 
Published: August 2012

AbstractA new efficient and environmentally friendly synthesis of polysubstituted quinoline derivatives involves the propylphosphonic anhydride promoted reaction of o‐aminoaryl ketones, e.g. (I), with a wide variety of enolizable ketones (II), (IV) and (VI).
ChemInform Abstract: CDC Reactions of N‐Aryl Tetrahydroisoquinolines Using Catalytic Amounts of DDQ: C—H Activation under Aerobic Conditions.
Authors: Alagiri Kaliyamoorthy , Devadig Pradeep , Prabhu Kandikere R. 
Published: August 2012

AbstractCross dehydrogenative coupling of tetrahydroisoquinolines (I) and (VI) with enolizable ketones (II) and (IV) as well as phosphonates (VII), resp., proceeds efficiently in the presence of catalytic amounts of DDQ and AIBN (10 mol%).
ChemInform Abstract: Regioselective Reaction of 5,6‐Dialkyl‐2‐halopyridine‐3,4‐dicarbonitriles with Ammonia.
Authors: Maksimova V. N. , Ershov O. V. , Lipin K. V. , Eremkin A. V. , Nasakin O. E. 
Published: August 2012

AbstractReaction of the title compounds (I) with alcoholic ammonia provides selective access to pyrrolopyridine derivatives (II) or nucleophilic substitution products (III), depending on the conditions.
ChemInform Abstract: Chiral Phosphoric Acid Catalyzed Enantioselective Three‐Component Povarov Reaction Using Cyclic Enethioureas as Dienophiles: Stereocontrolled Access to Enantioenriched Hexahydropyrroloquinolines.
Authors: Dagousset Guillaume , Retailleau Pascal , Masson Geraldine , Zhu Jieping 
Published: August 2012

AbstractA two‐step route is given to cleave the N‐thiocarbamoyl group in (IVc).
ChemInform Abstract: Generation of 4‐Polyfluoroaryl Pyrrolo[1,2‐a]quinolines via C—H Bond Activation.
Authors: Ye Shengqing , Liu Jianping , Wu Jie 
Published: August 2012

AbstractA series of 4‐substituted pyrrolo[1,2‐a]quinolines (III) is easily synthesized by a palladium‐catalyzed reaction of pyrroles (I) with fluoroarenes (II).
ChemInform Abstract: Efficient Synthesis of Pyrrolo[2,1‐a]isoquinoline and Pyrrole[1,2‐a]quinoline Derivatives via One‐Pot Two‐Step Metal‐Catalyzed Three‐Component Reactions.
Authors: Wu Lei , Sun Jing , Yan Chaoguo 
Published: August 2012

AbstractAlternatively to dimethyl acetylenedicarboxylate (II), the corresponding diethyl esters can be used as well.
ChemInform Abstract: Regioselective Synthesis of Fused Azo‐Linked Pyrazolo[4,3‐e]pyridines Using Nano‐Fe3O4.
Authors: Nikpassand Mohammad , Zare Leila , Shafaati Tamila , Shariati Shahab 
Published: August 2012

AbstractThe reaction is conducted under environmentally benign conditions and has an easy work‐up procedure.
ChemInform Abstract: Efficient [5 + 1]‐Strategy for the Assembly of 1,8‐Naphthyridin‐4(1H)‐ones by Domino Amination/Conjugate Addition Reactions of 1‐(2‐Chloropyridin‐3‐yl) Prop‐2‐yn‐1‐ones with Amines.
Authors: Iaroshenko Viktor O. , Knepper Ingo , Zahid Muhammad , Kuzora Rene , Dudkin Sergii , Villinger Alexander , Langer Peter 
Published: August 2012

AbstractA new approach for the synthesis of the title compounds is developed.
ChemInform Abstract: Synthesis and in vitro Anticancer and Antitubercular Activity of Diarylpyrazole Ligated Dihydropyrimidines Possessing Lipophilic Carbamoyl Group.
Authors: Yadlapalli Rama Krishna , Chourasia O. P. , Vemuri Kiranmayi , Sritharan Manjula , Perali Ramu Sridhar 
Published: August 2012

AbstractUtilizing the Biginelli reaction, a series of dihydropyrimidines (IV) is synthesized and evaluated for in vitro anticancer (MCF‐7) and antitubercular (MTB) potency.
ChemInform Abstract: Design, Synthesis, Synergistic Antimicrobial Activity and Cytotoxicity of 4‐Aryl Substituted 3,4‐Dihydropyrimidinones of Curcumin.
Authors: Lal Jaggi , Gupta S. K. , Thavaselvam D. , Agarwal D. D. 
Published: August 2012

AbstractNovel curcumin‐derived 3,4‐dihydropyrimidinones (IV), obtained by Biginelly‐type reaction under solvent‐free conditions, are screened for their antibacterial and antifungal activity as well as for their cytotoxicity.
ChemInform Abstract: Alum (KAl(SO4)2·12H2O) Catalyzed Multicomponent Transformation: Simple, Efficient, and Green Route to Synthesis of Functionalized Spiro[chromeno[2,3‐d]pyrimidine‐5,3′‐indoline]‐tetraones in Ionic Liquid Media.
Authors: Mirhosseini Moghaddam Mojtaba , Bazgir Ayoob , Mohammad Mehdi Akhondi , Gharemanzadeh Ramin 
Published: August 2012

AbstractAll products are purified by recrystallization.
ChemInform Abstract: Access and Regioselective Transformations of 6‐Substituted 4‐Aryl‐2,8‐dichloropyrido[3,2‐d]pyrimidine Compounds.
Authors: Bouscary‐Desforges Gwenaelle , Bombrun Agnes , Augustine John Kallikat , Bernardinelli Gerald , Quattropani Anna 
Published: August 2012

AbstractTreatment of the uracil (I) with the acrylates (II) followed by cyclization and chlorination provides an efficient approach to 2,4,8‐trichloropyridopyrimidines.
ChemInform Abstract: A New Approach to the Synthesis of 2‐Aryl‐Substituted Benzimidazoles, Quinazolines, and Other Related Compounds and Their Antibacterial Activity.
Authors: Los Renata , Wesolowska‐Trojanowska Marta , Malm Anna , Karpinska Monika M. , Matysiak Joanna , Niewiadomy Andrzej , Glaszcz Urszula 
Published: August 2012

AbstractA variety of title N‐heterocycles is synthesized by reaction of appropriate diamines with bis(arylthiocarbonyl) sulfoxides.
ChemInform Abstract: General Asymmetric Hydrogenation of 2‐Alkyl‐ and 2‐Aryl‐Substituted Quinoxaline Derivatives Catalyzed by Iridium‐Difluorphos: Unusual Halide Effect and Synthetic Application.
Authors: Cartigny Damien , Berhal Farouk , Nagano Takuto , Phansavath Phannarath , Ayad Tahar , Genet Jean‐Pierre , Ohshima Takashi , Mashima Kazushi , Ratovelomanana‐Vidal Virginie 
Published: August 2012

AbstractThe iridium catalyst promotes the asymmetric hydrogenation of a wide range of 2‐alkylated and 2‐arylated quinoxalines.
ChemInform Abstract: Synthesis and Structure Analysis of 1‐(3‐Methoxybenzoyl)‐3,6‐diphenyl‐1,4‐dihydro‐1,2,4,5‐tetrazine.
Authors: Rao Guo‐Wu , Guo Yan‐Mei , Li Xiao‐Min 
Published: August 2012

AbstractThe 1,4‐dihydro derivative (III) is formed rather than its 1,2‐dihydro analogue.
ChemInform Abstract: An Easy Two‐Step Synthesis of Macrocyclic Peptidotriazoles via a Four‐Component Reaction and Copper‐Catalyzed Intramolecular Azide—Alkyne [3 + 2] Click Cycloaddition.
Authors: Bahulayan D. , Arun S. 
Published: August 2012

AbstractThe process is illustrated by the examples (VI) and (XI).
ChemInform Abstract: Synthesis and Antiosteoclast Activity of Di(1‐oxo/thioxoperhydro‐1λ5‐[1,3,2]diazaphospholo [1,5‐a]pyridine‐1‐yl)(4‐substituted phenyl) Boronates.
Authors: Reddy G. Chandra Sekhar , Reddy M. Veera Narayana , Rani C. Radha , Reddy N. Bakthavatchala , Rao K. Uma Maheswara , Nayak S. K. , Reddy C. Suresh 
Published: August 2012

AbstractAll boronates (III) (10 examples), especially derivative (IIIc), show moderate to high antiosteoclast and osteoblast activities.
ChemInform Abstract: In situ Dearomatization/Alkylation of Arylphosphane Derivatives.
Authors: Stankevic Marek , Wojcik Karolina , Jaklinska Magdalena , Pietrusiewicz K. Michal 
Published: August 2012

AbstractBirch reduction of aryldialkylphosphane‐boranes and ‐phosphane oxides followed by treatment with electrophiles provides access to bulky (cyclohexadienyl)phosphanes.
ChemInform Abstract: An Approach to 1,2‐Dihydro‐1,4,2‐benzodiazaphosphinines
Authors: Marchenko Anatoliy P. , Koidan Georgiy N. , Huryeva Anastasia N. , Merkulov Anatoliy S. , Kostyuk Aleksandr N. 
Published: August 2012

Abstractbased on the rearrangement of readily accessible benzodiazaphosphole derivatives such as (IV) and (IX)
ChemInform Abstract: Structural Determination of 3β,11β‐Dihydroxyfriedelane (I) from Maytenus robusta (Celastraceae) by 1D and 2D NMR
Authors: Sousa Grasiely F. , Ferreira Fernanda L. , Duarte Lucienir P. , Silva Gracia D. F. , Messias Maria C. T. B. , Vieira Filho Sidney A. 
Published: August 2012

Abstractisolation and structure elucidation
ChemInform Abstract: Two New Norursane‐Type Triterpenoids from Dipsacus chinensis Collected in China.
Authors: Saito Yoshinori , Takashima Yuriko , Okamoto Yasuko , Komiyama Teppei , Ohsaki Ayumi , Gong Xun , Tori Motoo 
Published: August 2012

AbstractThe title compounds show moderate cytotoxicity when testest against HL‐60 cells.
ChemInform Abstract: Phenolic Compounds from the Aerial Parts of Diplomorpha canescens.
Authors: Devkota Hari Prasad , Watanabe Masato , Watanabe Takashi , Yahara Shoji 
Published: August 2012

AbstractA new C‐methyl flavanone glucoside, farrerol 4′‐O‐β‐D‐glucopyranoside (I), is isolated from the aerial parts of Diplomorpha canescens along with fourteen known phenolic compounds.
Small area estimation via heteroscedastic nested‐error regression
Authors: Jiang Jiming , Nguyen Thuan 
Published: August 2012

AbstractWe show that the maximum likelihood estimators (MLEs) of the fixed effects and within‐cluster correlation are consistent in a heteroscedastic nested‐error regression (HNER) model with completely unknown within‐cluster variances under mild conditions. The result implies that the empirical best linear unbiased prediction (EBLUP) method for small area estimation is valid in such a case. We also show that ignoring the heteroscedasticity can lead to inconsistent estimation of the within‐cluster correlation and inferior predictive performance. A jackknife measure of uncertainty for the EBLUP is developed under the HNER model. Simulation studies are carried out to investigate the finite‐sample performance of the EBLUP and MLE under the HNER model, with comparisons to those under the nested‐error regression model in various situations, as well as that of the jackknife measure of uncertainty. The well‐known Iowa crops data is used for illustration. The Canadian Journal of Statistics 40: 588–603; 2012 © 2012 Statistical Society of Canada
Robust Lagrange multiplier test for detecting ARCH/GARCH effect using permutation and bootstrap
Authors: Gel Yulia R. , Chen Bei 
Published: August 2012

AbstractThe Lagrange Multiplier (LM) test is one of the principal tools to detect ARCH and GARCH effects in financial data analysis. However, when the underlying data are non‐normal, which is often the case in practice, the asymptotic LM test, based on theχ2‐approximation of critical values, is known to perform poorly, particularly for small and moderate sample sizes. In this paper we propose to employ two re‐sampling techniques to find critical values of the LM test, namely permutation and bootstrap. We derive the properties ofexactnessandasymptotically correctnessfor the permutation and bootstrap LM tests, respectively. Our numerical studies indicate that the proposed re‐sampled algorithms significantly improve size and power of the LM test in both skewed and heavy‐tailed processes. We also illustrate our new approaches with an application to the analysis of the Euro/USD currency exchange rates and the German stock index.The Canadian Journal of Statistics40: 405–426; 2012 © 2012 Statistical Society of Canada