bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Bromamine‐B/PdCl2 Is an Efficient System for the Synthesis of Anthranilic Acids from Indoles and Indigos.
Authors: Kumar C. H. Vinod , Shivananda K. N. , Raju C. Nagu , Jagadeesh R. V. 
Published: March 2011

AbstractThe nontoxic method for the preparation of the compounds (II) depends strongly on the pH‐value of the system.
ChemInform Abstract: Iron‐Catalyzed Oxidative Addition of Alkoxycarbonyl Radicals to Alkenes with Carbazates and Air.
Authors: Taniguchi Tsuyoshi , Sugiura Yuki , Zaimoku Hisaaki , Ishibashi Hiroyuki 
Published: March 2011

AbstractAlkoxycarbonyl radicals, formed from carbazates under air and iron catalysis, smoothly react with terminal alkenes to afford β‐hydroxyesters, e.g. (III), (V) and (VII), in moderate yields.
ChemInform Abstract: Iron‐Facilitated Direct Oxidation C—H Transformation of Allylarenes or Alkenes to Alkenyl Nitriles.
Authors: Qin Chong , Jiao Ning 
Published: March 2011

AbstractThe first homogeneously catalytic transformation of allyl arenes or alkenes to the corresponding alkenyl nitriles, facilitated by an inexpensive and nontoxic iron catalyst, is shown to proceed via the cleavage of three C—H bonds.
ChemInform Abstract: A Rapid and Facile Esterification of Na‐Carboxylates with Alkyl Halides Promoted by the Synergy of the Combined Use of DMSO and an Ionic Liquid under Ambient Conditions.
Authors: Dighe Satish N. , Bhattad Ravindra V. , Kulkarni Raghunath R. , Jain Kishor S. , Srinivasan Kumar V. 
Published: March 2011

AbstractA fast, efficient, and catalyst‐free esterification of aromatic carboxylates is reported.
ChemInform Abstract: Facile Synthesis of 2‐(Phenylthio)phenols by Copper(I)‐Catalyzed Tandem Transformation of C—S Coupling/C—H Functionalization.
Authors: Xu Rungsheng , Wan Jie‐Ping , Mao Hui , Pan Yuanjiang 
Published: March 2011

AbstractCopper‐catalyzed reaction of arenethiols (I) with aryl iodides (II) and bromides (IV) proceeds with thioether formation and concomitant ortho‐hydroxylation of the thiol‐derived aryl ring.
ChemInform Abstract: Palladium Catalyzed Synthesis of Aryl Thiols: Sodium Thiosulfate as a Cheap and Nontoxic Mercapto Surrogate.
Authors: Yi Jun , Fu Yao , Xiao Bin , Cui Wei‐Chen , Guo Qing‐Xiang 
Published: March 2011

AbstractPd‐catalyzed coupling of aryl halides and triflates with sodium thiosulfate and subsequent reduction gives the corresponding aryl thiols in good yield.
ChemInform Abstract: Competitive and Selective Csp3—Br versus Csp2—Br Bond Activation in Palladium‐Catalyzed Suzuki Cross‐Coupling: An Experimental and Theoretical Study of the Role of Phosphine Ligands.
Authors: Mollar Cristian , Besora Maria , Maseras Feliu , Asensio Gregorio , Medio‐Simon Mercedes 
Published: March 2011

AbstractPhosphine ligands are shown to control the selectivity in the Suzuki—Miyaura coupling of dibromo sulfoxide (I).
ChemInform Abstract: Rhodium(I)‐Catalyzed Addition of Arylboronic Acids to (Benzyl‐/Arylsulfonyl)acetonitriles: Efficient Synthesis of (Z)‐β‐Sulfonylvinylamines and β‐Keto Sulfones.
Authors: Tsui Gavin Chit , Glenadel Quentin , Lau Chan , Lautens Mark 
Published: March 2011

Abstractβ‐Sulfonylvinylamines (III) are formed from substrate (I) under optimized conditions A) in the presence of Cs2CO3.
ChemInform Abstract: Highly Enantioselective Addition of Phenylethynylzinc to Aldehydes Using Aziridine‐Functionalized Tridentate Sulfinyl Ligands.
Authors: Rachwalski Michal , Lesniak Stanislaw , Kielbasinski Piotr 
Published: March 2011

AbstractTitle reaction affords the adducts (III) in up to 98% optical purity.
ChemInform Abstract: Pushing the Limits of Steric Demand Around a Biaryl Axis: Synthesis of Tetra‐ortho‐Substituted Biaryl Naphthalenes.
Authors: Glass Adam C. , Klonoski Sam , Zakharov Lev N. , Liu Shih‐Yuan 
Published: March 2011

AbstractThe reaction of cyclopropyl ketones (I) with aryllithium reagents followed by europium‐catalyzed rearrangement gives rise to title “biaryl” naphthalenes (IV).
ChemInform Abstract: An Improved Method for the Preparation of 4,5‐Diaminochrysazin.
Authors: Kumar P. Hareesh , Rao G. Venkateshwara , Narayanaswamy B. , Reddy G. Chandrasekara 
Published: March 2011

AbstractThe title method affords the title compound (V) in high purity and is suitable for scale‐up.
ChemInform Abstract: Novel Pd Heterogeneous Catalysts for Cycloisomerization of Acetylenic Carboxylic Acids.
Authors: Neatu Florentina , Protesescu Loredana , Florea Mihaela , Parvulescu Vasile I. , Teodorescu Cristian M. , Apostol Nicoleta , Toullec Patrick Y. , Michelet Veronique 
Published: March 2011

AbstractThe 2 new recyclable catalysts promote the transformation of acetylenic carboxylic acids (I) to the corresponding lactones (II) under mild conditions.
ChemInform Abstract: Diversified Assembly of Perfluoroalkyl‐Substituted Furans and 2,5‐Dihydrofuran‐2‐ols.
Authors: Chen Guofei , He Guangke , Xue Can , Fu Chunling , Ma Shengming 
Published: March 2011

AbstractThe conversion of 1,2‐allenyl perfluoroalkyl ketones to 3‐iodofurans (II) or the corresponding 2,5‐dihydrofurans (IV) is achieved with iodine in the presence of small amounts of water.
ChemInform Abstract: Asymmetric Synthesis of Polyfunctionalized Pyrrolidines via a Thiourea Catalyzed Domino Mannich/Aza‐Michael Reaction.
Authors: Enders Dieter , Goeddertz Dominik P. , Beceno Christian , Raabe Gerhard 
Published: March 2011

AbstractDomino Mannich—aza‐Michael reaction of aromatic N‐Boc‐protected aldimines (II) with ene tetracarboxylate (I) is efficiently catalyzed by a chiral bifunctional thiourea catalyst to give polyfunctionalized pyrrolidines (III) in good yields and stereoselectivities (<95% d.e., up to 94% e.e.).
ChemInform Abstract: Tunable Hydride Transfer in the Redox Amination of Indoline with Aldehyde: An Attractive Intramolecular Hydrogen‐Bond Effect.
Authors: Mao Hui , Xu Runsheng , Wan Jieping , Jiang Zhengyang , Sun Cuirong , Pan Yuanjiang 
Published: March 2011

AbstractA Broensted acid catalyzed redox amination of indoline with aldehydes for the synthesis of N‐alkylindoles (III) proceeds via intramolecular hydride transfer.
ChemInform Abstract: A Synthetic Approach to Carbazoles Using Electrochemically Generated Hypervalent Iodine Oxidant.
Authors: Kajiyama Daichi , Inoue Keisuke , Ishikawa Yuichi , Nishiyama Shigeru 
Published: March 2011

AbstractBoth electron‐withdrawing and electron‐donating substituents at the para position of the acetamide group interfere with the present cyclization.
ChemInform Abstract: Palladium‐Catalyzed Dynamic Kinetic Asymmetric Transformations of Vinyl Aziridines with Nitrogen Heterocycles: Rapid Access to Biologically Active Pyrroles and Indoles.
Authors: Trost Barry M. , Osipov Maksim , Dong Guangbin 
Published: March 2011

AbstractA variety of pyrrole and indole derivatives is successfully applied as nucleophiles in the Pd‐catalyzed dynamic kinetic asymmetric alkylation of vinyl aziridines (II).
ChemInform Abstract: Pd‐Catalyzed Negishi Coupling of Pyrazole Triflates with Alkyl Zinc Halides.
Authors: Zhang Ting , Gao Xiaodi , Wood Harold B. 
Published: March 2011

AbstractOptimized reaction conditions are developed for the synthesis of 3‐substituted pyrazoles via Negishi coupling of pyrazoles (I) with various zinc halides.
ChemInform Abstract: Indium(III) Chloride Catalyzed Three‐Component Coupling Reaction: A Novel Synthesis of 2‐Substituted Aryl(indolyl)kojic Acid Derivatives as Potent Antifungal and Antibacterial Agents.
Authors: Reddy B. V. Subba , Reddy M. Ramana , Madan Ch. , Kumar K. Pranay , Rao M. Srinivasa 
Published: March 2011

AbstractThe title compounds (IV) exhibit interesting antimicrobial activity.
ChemInform Abstract: New 7‐Hydroxycoumarin‐Based Fluorescent Chemosensors for Zn(II) and Cd(II).
Authors: Swamy K. M. K. , Kim Min Jung , Jeon Hye Ryeong , Jung Ji Young , Yoon Juyoung 
Published: March 2011

AbstractFive new 7‐hydroxycoumarins (I) and (II) are synthesized and evaluated as fluorescent sensors for metal ions.
ChemInform Abstract: FeCl3‐Catalyzed Condensation of 2‐Naphthol and Aldehydes under Solvent‐Free Reaction Conditions: An Efficient and Green Alternative for the Synthesis of 14‐Aryl(Alkyl)‐14‐H‐dibenzo[a,j]xanthenes.
Authors: Wang Bo , Li Pinhua , Zhang Yicheng , Wang Lei 
Published: March 2011

AbstractThe title reaction uses an inexpensive and eco‐friendly catalyst without any additives.
ChemInform Abstract: 5‐Bromo‐2‐pyridylzinc Reagent; Direct Preparation and Its Coupling Reactions.
Authors: Rieke Reuben D. , Kim Seung‐Hoi 
Published: March 2011

AbstractA practical route for the synthesis of differently 2‐substituted 5‐bromopyridines is developed by generating stable pyridylzinc iodide from 5‐bromo‐2‐iodopyridine and Rieke zinc followed by coupling with activated organic halides.
ChemInform Abstract: 3‐Methoxalylchromone — A Novel Versatile Reagent for the Regioselective Purine Isostere Synthesis.
Authors: Iaroshenko Viktor O. , et al. et al. 
Published: March 2011

AbstractThe cyclocondensation of chromone (I) with a variety of electron‐rich aminoheterocycles affords a wide range of fused pyridines bearing an ester group at the α‐position of the pyridine ring.
ChemInform Abstract: One‐Pot Synthesis of Furo[2,3‐h]quinoline and Furo[2,3‐h]isoquinoline Derivatives Using Fischer Carbene Complex.
Authors: Roy Priyabrata , Ghorai Binay K. 
Published: March 2011

AbstractA novel route for the synthesis of furo[2,3‐h]quinoline and furo[2,3‐h]isoquinoline derivatives is developed by coupling pyridine‐bridged enynes with the Fischer carbene complex (II).
ChemInform Abstract: Convenient Syntheses of Pyrazolo[3,4‐b]pyridin‐6‐ones Using Either Microwave or Ultrasound Irradiation.
Authors: Rodrigues‐Santos Claudio E. , Echevarria Aurea 
Published: March 2011

AbstractPyridinone derivatives (I) are coupled with hydrazines under conventional heating conditions, microwave, or ultrasound irradiation to yield pyrazolopyridinones.
ChemInform Abstract: Enantioselective Organocatalytic Biginelli Reaction: Dependence of the Catalyst on Sterics, Hydrogen Bonding, and Reinforced Chirality.
Authors: Saha Satyajit , Moorthy Jarugu Narasimha 
Published: March 2011

AbstractA number of prolinamide derivatives is tested as catalysts and the most potent one is the derivative (Ia).
ChemInform Abstract: An Efficient Synthesis of 7‐(Arylmethyl)‐3‐tert‐butyl‐1‐phenyl‐6,7‐dihydro‐1H,4H‐pyrazolo[3,4‐d] [1,3]oxazines.
Authors: Abonia Rodrigo , Castillo Juan , Insuasty Braulio , Quiroga Jairo , Nogueras Manuel , Cobo Justo 
Published: March 2011

AbstractAn efficient three‐step procedure allows the synthesis of new pyrazolooxazines through an unplanned intramolecular etherification process as key step.
ChemInform Abstract: One‐Pot Synthesis of 3‐(Trimethylsilyl)propynamides.
Authors: Medvedeva A. S. , Andreev M. V. , Safronova L. P. 
Published: March 2011

AbstractA highly efficient one‐pot procedure for the synthesis of the title compounds via acylation of amines with 3‐(trimethylsilyl)propynoyl chloride, generated in situ from the corresponding carboxylic acid, is developed.
ChemInform Abstract: Two New Cytotoxic Labdane Diterpenes from the Rhizomes of Hedychium coronarium.
Authors: Suresh G. , Reddy P. Prabhakar , Babu K. Suresh , Shaik Thokhir Basha , Kalivendi Shasi Vardhan 
Published: March 2011

AbstractThe rhizomes and fruits of the title plant have been used in the Asian folk medicine for the treatment of arthritis, diabetes, headache and hypertension.
ChemInform Abstract: An Expedient Approach to the Benzopyran Core: Application to Synthesis of the Natural Products (.+‐.)‐Xyloketals and (.+‐.)‐Alboatrin.
Authors: Xu Zhongliang , Li Yiying , Lu Bingtai , Pang Jiyan , Lin Yongcheng 
Published: March 2011

AbstractA mild and efficient protocol for the synthesis of naturally occurring chromane compounds is presented.
ChemInform Abstract: Synthesis of (S)‐(+)‐Decursin and Its Analogues as Potent Inhibitors of Melanin Formation in B16 Murine Melanoma Cells.
Authors: Lee Kyeong , Lee Jee‐Hyun , Boovanahalli Shanthaveerappa K. , Choi Yongseok , Choo Soo‐Jin , Yoo Ick‐Dong , Kim Dong Hee , Yun Mi Young , Lee Gye Won , Song Gyu‐Yong 
Published: March 2011

AbstractStructural modification of the anticancer compound decursinol leads to a series of compounds possessing in vitro inhibitory potencies against α‐MSH induced melanin production in B16 murine melanoma cells.
ChemInform Abstract: New Class of Potent Antitumor Acylhydrazone Derivatives Containing Furan.
Authors: Chui Zining , Li Ying , Ling Yun , Huang Juan , Cui Jingrong , Wang Ruiqing , Yang Xinling 
Published: March 2011

AbstractA pair of isomeric structures of N‐acylhydrazones is designed and synthesized.
ChemInform Abstract: Discovery of NBI‐77860/GSK561679, a Potent Corticotropin‐Releasing Factor (CRF1) Receptor Antagonist with Improved Pharmacokinetic Properties.
Authors: Williams John P. , et al. et al. 
Published: March 2011

AbstractAmong a variety of antagonists, the title compound (I) is found to be a high affinity ligand in the in vitro CRF ACTH production assay.
Assessment of mixing quality for an industrial pulp mixer using electrical resistance tomography
Authors: Yenjaichon Wisarn , Pageau Gerry , Bhole Manish , Bennington Chad P. J. , Grace John R. 
Published: March 2011

AbstractThe quality of mixing of a pulp suspension and chlorine dioxide by a static mixer in an industrial chlorine dioxide bleaching stage was evaluated using electrical resistance tomography (ERT) as a function of process operating conditions, including chemical flow rate, suspension flow rate, and suspension mass concentration. The uniformity was quantified by a mixing index based on the coefficient of variation of the individual conductivity values in each image pixel. An increase in the mixing index, indicating lower mixing quality, was observed when the chemical flow rate increased. In addition, the mixing quality decreased with a decrease in suspension flow rate. On the other hand, a decrease in the suspension mass concentration at a constant volumetric suspension flow rate gave better mixing quality. The results show that ERT can be used to evaluate industrial‐scale mixer performance and to monitor the changes in the mixing quality as a function of process operating conditions. The results are in good agreement with those in the literature based on other measurement techniques for similar mixer installations.
Nanoparticulate Hollow TiO2 Fibers as Light Scatterers in Dye‐Sensitized Solar Cells: Layer‐by‐Layer Self‐Assembly Parameters and Mechanism
Authors: Rahman Masoud , Tajabadi Fariba , Shooshtari Leyla , Taghavinia Nima 
Published: March 2011

AbstractHollow structures show both light scattering and light trapping, which makes them promising for dye‐sensitized solar cell (DSSC) applications. In this work, nanoparticulate hollow TiO2 fibers are prepared by layer‐by‐layer (LbL) self‐assembly deposition of TiO2 nanoparticles on natural cellulose fibers as template, followed by thermal removal of the template. The effect of LbL parameters such as the type and molecular weight of polyelectrolyte, number of dip cycles, and the TiO2 dispersion (amorphous or crystalline sol) are investigated. LbL deposition with weak polyelectrolytes (polyethylenimine, PEI) gives greater nanoparticle deposition yield compared to strong polyelectrolytes (poly(diallyldimethylammonium chloride), PDDA). Decreasing the molecular weight of the polyelectrolyte results in more deposition of nanoparticles in each dip cycle with narrower pore size distribution. Fibers prepared by the deposition of crystalline TiO2 nanoparticles show higher surface area and higher pore volume than amorphous nanoparticles. Scattering coefficients and backscattering properties of fibers are investigated and compared with those of commercial P25 nanoparticles. Composite P25–fiber films are electrophoretically deposited and employed as the photoanode in DSSC. Photoelectrochemical measurements showed an increase of around 50 % in conversion efficiency. By employing the intensity‐modulated photovoltage and photocurrent spectroscopy methods, it is shown that the performance improvement due to addition of fibers is mostly due to the increase in light‐harvesting efficiency. The high surface area due to the nanoparticulate structure and strong light harvesting due to the hollow structure make these fibers promising scatterers in DSSCs.
Mucinous adenocarcinoma of rectum in an 11‐year‐old boy: A case report
Authors: Agrawal Pallavi , Rajwanshi Arvind , Gupta Nalini , Rao K. L. N. 
Published: March 2011

AbstractColorectal carcinoma in pediatric population is relatively rare (<1% of all cancers in first two decades) and behaves aggressively as compared with the same in adult population. We report a case of 11‐year‐old adolescent male, who presented with pain abdomen and melena. Fine‐needle aspiration cytology from the growth in rectum revealed mucinous adenocarcinomas, which was later confirmed on histopathology. The patient also had positive peritoneal fluid cytology. Diagn. Cytopathol. 2012 © 2011 Wiley Periodicals, Inc.
Synthesis of 5‐(Fluorophenyl)tocopherols as Novel Dioxin Receptor Antagonists
Authors: Kloser Elisabeth , Böhmdorfer Stefan , Brecker Lothar , Kählig Hanspeter , Netscher Thomas , Mereiter Kurt , Rosenau Thomas 
Published: March 2011

Abstractγ‐Tocopherol, a component of the essential nutrient mixture commonly designated as vitamin E, was chemically combined with differently substituted monofluoro‐ and difluorophenyl moieties to produce potential antagonists for the human aryl hydrocarbon receptor (AhR). 5‐Iodo‐γ‐tocopherol was a very reliable starting material for the Pd‐catalyzed reaction with (fluorophenyl)boronic acids (Suzuki coupling). The ortho‐ and meta‐fluoro‐substituted derivatives showed conformational isomerism due to restricted rotation around the interaromatic bond. This effect was investigated by NMR spectroscopy. Three of the derivatives showed very high potency in assays and are promising candidates for further testing.
Exploring the Relationship between Coping Strategies and Binge Eating in Nonclinical Adolescents
Authors: Sierra‐Baigrie Susana , Lemos‐Giráldez Serafín , Paino Mercedes , Fonseca‐Pedrero Eduardo 
Published: March 2011

AbstractThe aims of the study were to determine the rate of binge eating and examine the relationship between binge eating and coping in nonclinical adolescents. A total of 1913 adolescents completed the Bulimic Investigatory Test, Edinburgh, the Adolescent Coping Scale (ACS), the Youth Self‐Report and additional questions regarding the binge‐eating episodes. Of the total sample, 6.94% reported bingeing in the last 6 months. The adolescents who binge eat reported a more frequent use of Intropunitive avoidance and Introversion and a less frequent use of Positive‐effortful coping compared with those who do not binge eat. However, when the effects of age and depression were controlled in the analysis, the groups only differed in the Positive and Intropunitive avoidance dimensions of coping. Training adolescents on how to cope with stress in a more constructive manner may be a possible strategy for the prevention of maladaptive eating patterns in adolescents. Copyright © 2011 John Wiley & Sons, Ltd and Eating Disorders Association.
Moisture content in timber decking exposed to bushfire weather conditions
Authors: Macindoe Lyndon , Leonard Justin 
Published: March 2011

SUMMARYIgnition of the external combustible elements of a building is one of the key factors leading to house loss in bushfires. Timber elements contain moisture that migrates into and out from the timber surface, depending on the surrounding ambient conditions. In extreme hot and dry conditions, such as those associated with severe bushfire weather, the moisture contents (MCs) in building timbers can drop well below the normal levels. In this paper, we not only qualify a methodology to assess the likely MCs of timbers under typical bushfire conditions, but also quantify the low levels of moisture that can be expected for the climatic conditions experienced in Melbourne—one of Australia's bushfire‐prone regions. Copyright © 2011 John Wiley & Sons, Ltd.
Investigating evacuation lift dispatch strategies using computer modelling
Authors: Kinsey Michael J. , Galea Edwin R. , Lawrence Peter J. 
Published: March 2011

SUMMARYThis paper presents a detailed description of an agent‐based lift (elevator) model developed within buildingEXODUS software intended to represent evacuation scenarios. The main components of the lift model are described including the lift: kinematics, attributes and dispatch control. The agent–lift interaction model is also described, including the lift bank selection, the lift waiting area behaviour (wait location selection and wait duration) and the lift car selection and entry. The lift model is used to investigate a series of full building evacuation scenarios based on a hypothetical 50 floor building with four staircases and a population of 7840 agents. The analysis explores the relative merits of using up to 32 lifts (arranged in four banks) and various egress lift dispatch strategies to evacuate the entire building population. Findings from the investigation suggest that the most efficient evacuation strategy utilizes a combination of lifts and stairs to empty the building and clear the upper half of the building in minimum time. Combined stair lift evacuation times have been shown to be as much as 50% faster than stair only evacuation times. The introduction of the agent milling behaviour resulted in reductions in evacuation times compared with the same scenarios without milling behaviour. Copyright © 2011 John Wiley & Sons, Ltd.
Are speculators informed?
Authors: Schwarz Krista 
Published: March 2011

AbstractThe positions of hedgers and speculators are correlated with returns in a number of futures markets, but there is much debate as to the interpretation of such a relationship—whether it reflects private information, liquidity, or trend‐chasing behavior. This paper studies the relationship between positioning of hedgers and speculators and returns in equity futures markets. I propose a novel test of the private information hypothesis: analyzing the effect of public announcements about futures positions on prices, using high‐frequency data in short windows around the announcements. I find that the revelation of speculators' positions is informative to investors more broadly, supporting the private information view. © 2011 Wiley Periodicals, Inc. Jrl Fut Mark
Functional outcomes related to the prevention of radiation‐induced xerostomia: Oral pilocarpine versus submandibular salivary gland transfer
Authors: Rieger Jana M. , Jha Naresh , Lam Tang Judith A. , Harris Jeffrey , Seikaly Hadi 
Published: March 2011

AbstractBackgroundXerostomia has a devastating impact on oral function and quality of life in patients who receive radiation treatment for head and neck cancer. The purpose of this study was to examine functional outcomes related to 2 saliva‐sparing treatments: (1) oral pilocarpine during radiotherapy; or (2) the submandibular salivary gland transfer (SGT) before radiotherapy.MethodsSixty‐nine patients were recruited (SGT = 36; pilocarpine = 33). Speech intelligibility, swallowing outcomes, and quality of life were assessed at 4 points in time (pretreatment, and 1 month, 6 months, and 12 months after the pretreatment assessment).ResultsThere were no differences between groups in speech outcomes; however, significant between‐group differences existed in swallowing and quality of life outcomes. In all cases, patients who received the SGT procedure had better swallowing outcomes and quality of life scores than the patients who received oral pilocarpine.ConclusionThe SGT should be the treatment of choice between the 2 treatments offered to prevent xerostomia in the present study. © 2011 Wiley Periodicals, Inc. Head Neck, 2012