bluuebunny/crossref_metadata_2025_split huggingface dataset:
ChemInform Abstract: Bicyclic Guanidinium‐Catalyzed Enantioselective Phase‐Transfer Alkylation: Direct Access to Pyrroloindolines and Furoindolines.
Authors: Chen Wenchao , Yang Wenguo , Yan Lin , Tan Choon‐Hong , Jiang Zhiyong 
Published: February 2014

AbstractThe combination of a chiral bicyclic guanidinium salt and zinc iodide is an efficient catalytic system for the enantioselective alkylation of oxindoles (I) and (XI).
ChemInform Abstract: Overriding Effect of Temperature over Reagent and Substrate Size for Boron‐Mediated Aldol Reaction of Methyl Phenylacetate.
Authors: Ramachandran P. Veeraraghavan , Chanda Prem B. 
Published: February 2014

AbstractThe boron‐mediated aldol reaction of methyl phenylacetate with aliphatic and aromatic aldehydes is optimized to give syn‐ or anti‐aldol products.
ChemInform Abstract: Facile Aerobic Photooxidation of Alcohols Using 2‐Chloroanthraquinone under Visible Light Irradiation.
Authors: Shimada Yoshiko , Hattori Kasumi , Tada Norihiro , Miura Tsuyoshi , Itoh Akichika 
Published: February 2014

AbstractVarious catalytic systems are applied in the aerobic photooxidation of primary and secondary alcohols to the corresponding carboxylic acids and ketones under mild conditions.
ChemInform Abstract: Magnetite (Fe3O4) Silica Based Organic—Inorganic Hybrid Copper(II) Nanocatalyst: A Platform for Aerobic N‐Alkylation of Amines.
Authors: Sharma Rakesh K. , Monga Yukti , Puri Aditi , Gaba Garima 
Published: February 2014

AbstractThe applied catalyst can be separated by an external magnet and reused several times.
ChemInform Abstract: Asymmetric Aldol Reactions Between Acetone and Benzaldehydes Catalyzed by Chiral Zn2+ Complexes of Aminoacyl 1,4,7,10‐Tetraazacyclododecane: Fine‐Tuning of the Amino‐Acid Side Chains and a Revised Reaction Mechanism.
Authors: Itoh Susumu , Tokunaga Takuya , Sonoike Shotaro , Kitamura Masanori , Yamano Akihito , Aoki Shin 
Published: February 2014

AbstractThe yields and enantioselectivities of the reaction are improved compared to the known methods.
ChemInform Abstract: Synthesis of 2‐Substituted 9,10‐Anthraquinones.
Authors: Chang Meng‐Yang , Tai Hang‐Yi 
Published: February 2014

AbstractRacemic 2‐triazolyl or 2‐alkylethyl 9,10‐anthraquinone derivatives [(V), (X), and (XI)] are efficiently synthesized in good yields by a three‐ or four‐step procedure involving bromination, nucleophilic substitution, and CuI‐promoted 1,3‐dipolar cycloaddition or alkylation and reductive desulfonylation, respectively.
ChemInform Abstract: Oxidation of Sulfides with Hydrogen Peroxide Catalyzed by Vitamin B2 Derivatives.
Authors: Imada Yasushi , Takagishi Masamitsu , Komiya Naruyoshi , Naota Takeshi 
Published: February 2014

Abstract5‐Ethyl‐3‐methyl‐2′,4′:3′,5′‐di‐O‐methyleneriboflavinium perchlorate, readily available from commercially available riboflavin (vitamin B2), acts as an highly efficient and robust organocatalyst for the selective oxidation of organic sulfides to corresponding sulfoxides (11 examples) under mild conditions.
ChemInform Abstract: Metal‐Free Arylations via Photochemical Activation of the Ar—OSO2R Bond in Aryl Nonaflates.
Authors: Raviola Carlotta , Canevari Veronica , Protti Stefano , Albini Angelo , Fagnoni Maurizio 
Published: February 2014

AbstractThe reaction can be carried out using the premade ArOSO2Nf or the reagents can be made in situ.
ChemInform Abstract: Catalyst‐Controlled Highly Selective Coupling and Oxygenation of Olefins: A Direct Approach to Alcohols, Ketones, and Diketones.
Authors: Su Yijin , Sun Xiang , Wu Guolin , Jiao Ning 
Published: February 2014

AbstractA method for the direct synthesis of substituted alcohols, ketones, and diketones through a catalyst‐controlled highly chemoselective coupling and oxygenation of olefins is developed.
ChemInform Abstract: Stereoselective Synthesis of Benzofulvenes via a Palladium‐Catalyzed Cyclization of 1,3‐Dienes Derived from Morita—Baylis—Hillman Adducts.
Authors: Lim Cheol Hee , Kim Ko Hoon , Lim Jin Woo , Kim Jae Nyoung 
Published: February 2014

AbstractA facile synthesis of benzofulvenes is carried out via Pd‐catalyzed intramolecular Mizoroki—Heck reaction of 1,3‐dienes easily obtained from the Wittig reaction between Morita—Baylis—Hillman adducts and various aldehydes (not shown).
ChemInform Abstract: Synthesis and Characterization of Novel Aryl Cyclitols: Polycyclitols.
Authors: Balci Neslihan , Anil Baris , Kelebekli Latif , Sahin Ertan , Goeksu Sueleyman 
Published: February 2014

AbstractA new triol and a pentol are synthesized starting from the Diels—Alder adduct (III) via stereoselective reduction of the ketone groups in (III) and subsequent cis‐dihydroxylation, respectively.
ChemInform Abstract: Molecular Diversity from Aromatics. A Tandem Oxidative Dearomatization, Cycloaddition and Reactivity Modulation in Excited States: Synthesis of Tricyclo[5.3.1.01,5]undecanes and Bicyclo[4.2.0]octanes from Common Precursors.
Authors: Singh Vishwakarma , Islam Sk. Nurul , Mali Jyotirling 
Published: February 2014

AbstractOxidation of the hydroxymethylphenol (I) generates a dearomatized 6,6‐spiroepoxycyclohexa‐2,4‐dienone intermediate which is trapped by Diels—Alder reaction with acrylates.
ChemInform Abstract: Organocatalyzed Asymmetric Synthesis of Dihydrodibenzofurans Based on a Dienamine Process.
Authors: Wang Zi‐Yu , Wong Wing‐Tak , Yang Dan 
Published: February 2014

AbstractThe first organocatalyzed asymmetric method for the synthesis of dihydrodibenzofurans works well with a broad range of substrates and gives only the cis‐diastereomers in good yields with up to 91% ee.
ChemInform Abstract: Photochemical Double 5‐exo Cyclization of Alkenyl‐Substituted Dithienylacetylenes: Efficient Synthesis of Diarylated Dithienofulvalenes.
Authors: Fukazawa Aiko , Karasawa Takashi , Zhang Hongyu , Minemura Kazumitsu , Camacho Cristopher , Wang Jian , Irle Stephan , Yamaguchi Shigehiro 
Published: February 2014

AbstractA new photochemical cyclization of bis(alkenylthienyl)acetylenes (I) is presented as an efficient method to synthesize diaryl‐substituted dithienofulvalenes (II).
ChemInform Abstract: A Simple Synthesis of Polysubstituted Pyrrolidines by an Organocatalytic Three‐Component Approach Featuring a One‐Pot Condensation and [3 + 2]‐Cycloaddition Reaction in Aqueous Medium.
Authors: Reboredo Silvia , Vicario Jose L. , Carrillo Luisa , Reyes Efraim , Uria Uxue 
Published: February 2014

AbstractDensely functionalized pyrrolidines are obtained stereoselectively under mild conditions.
ChemInform Abstract: Choline Chloride/Urea Ionic Liquid Catalyzed a Convenient One‐Pot Synthesis of Indole‐3‐propanamide Derivatives.
Authors: Siddalingamurthy Eranna , Mahadevan Kittappa M. , Kumar Thamatakallu O. Shrungesh 
Published: February 2014

AbstractA versatile and general method for the synthesis of indole‐3‐propanamides (V) is development using the three‐component reaction of indole (I) with Meldrum′s acid and aldehydes and subsequent reaction of the Meldrum′s adduct formed with amines.
ChemInform Abstract: Lewis Acidic (Choline Chloride.3ZnCl2) Ionic Liquid: A Green and Recyclable Catalyst for the One‐Pot Synthesis of 4‐((3‐Indolyl)(aryl)methyl)‐N,N‐dimethylanilines under Solvent‐Free Conditions.
Authors: Hekmatshoar Rahim , Mousavizadeh Farnoush , Rahnamafar Reyhaneh 
Published: February 2014

AbstractThe catalyst can be easily recycled and reused up to four times with no noticeable drop in activity.
ChemInform Abstract: Montmorillonite K‐10 as a Catalyst in the Synthesis of 5,5‐Disubstituted Hydantoins under Ultrasound Irradiation.
Authors: Safari J. , Javadian L. 
Published: February 2014

AbstractA rapid and highly efficient synthesis of 5‐substituted hydantoin derivatives is achieved by three‐component condensation of carbonyl compounds with KCN and (NH4)2CO3 under ultrasound irradiation conditions.
ChemInform Abstract: Medium Buffer Effects on the Condensation of L‐Cysteine and Aryl Nitriles to (R)‐2‐Aryl‐4,5‐dihydrothiazole‐4‐carboxylic Acids.
Authors: Maltsev Oleg V. , Walter Valerianne , Brandl Matthias J. , Hintermann Lukas 
Published: February 2014

AbstractThe title condensation in buffered aqueous alcoholic medium is reinvestigated and it can be shown that no undesired hydrolysis or racemization is observed.
ChemInform Abstract: The Reaction of Carbon Disulfide with α‐Haloketones and Primary Amines in the Presence of Potassium Iodide as Catalyst.
Authors: Safaei‐Ghomi Javad , Salimi Fariba , Ramazani Ali 
Published: February 2014

AbstractThe title reaction represents a rapid and unprecedented route for the synthesis of 1,3‐thiazolethione derivatives with expected biological activity.
ChemInform Abstract: Enantioselective Rhodium‐Catalyzed Allylation of Cyclic Imines with Potassium Allyltrifluoroborates.
Authors: Hepburn Hamish B. , Chotsaeng Nawasit , Luo Yunfei , Lam Hon Wai 
Published: February 2014

AbstractThe asymmetric reaction of different types of cyclic imines with a range of allyltrifluoroborates is described using a rhodium complex catalyst having a chiral bicyclic diene as ligand.
ChemInform Abstract: Efficient in situ Synthesis of 3,5‐Disubstituted‐1,2,4‐triazoles under Microwave‐Assisted Conditions.
Authors: Wei Qing , Qiao Chengfang , Xia Zhengqiang , Chen Sanping 
Published: February 2014

AbstractA concise and high‐yield access to title compounds (II) is achieved by cycloaddition of organonitriles and ammonia under microwave conditions.
ChemInform Abstract: Switchable Diastereoselectivity in Enantioselective [4 + 2] Cycloadditions with Simple Olefins by Asymmetric Binary Acid Catalysis.
Authors: Lv Jian , Zhang Long , Luo Sanzhong , Cheng Jin‐Pei 
Published: February 2014

AbstractThe exchange of the metal ion from In(III) to Sc(III) in a binary acid catalyst leads to a switch in the diastereoselectivity of [4 + 2] cycloadditions.
ChemInform Abstract: The Role of Ni‐Carboxylate During Catalytic Asymmetric Iodolactonization Using PyBidine‐Ni(OAc)2.
Authors: Arai Takayoshi , Kajikawa Satoshi , Matsumura Eri 
Published: February 2014

AbstractKey to this reaction is the formation of an intermediary Ni‐carboxylate.
ChemInform Abstract: 2‐(Pyridinium‐1‐yl)‐1,1‐bis(triflyl)ethanides: Structural Behavior and Availability as Bis(triflyl)ethylating Reagents.
Authors: Yanai Hikaru , Takahashi Yoichi , Fukaya Haruhiko , Dobashi Yasuo , Matsumoto Takashi 
Published: February 2014

AbstractThe synthesis of stable, non‐hygroscopic, and easy‐to‐handle zwitterionic title structures from heterocyclic arenes is presented.
ChemInform Abstract: Design, Synthesis and Cytotoxic Activity of Some Novel Compounds Containing Pyrazolo[3,4‐d]pyrimidines Nucleus.
Authors: Kandeel Manal M. , Roshdy Sameha M. , Abdelall Eman K. A. , Abdelgawad Mohamed A. , Lamie Phoebe F. 
Published: February 2014

AbstractNew compounds (Vb), (IXa), (XIIb), and (XIV) exhibit promising in vitro cytotoxic activity against human breast cancer adenoma (MCF‐7).
ChemInform Abstract: Copper‐Catalyzed Regioselective Intramolecular Oxidative α‐Functionalization of Tertiary Amines: An Efficient Synthesis of Dihydro‐1,3‐Oxazines.
Authors: Deb Mohit L. , Dey Suvendu S. , Bento Isabel , Barros M. Teresa , Maycock Christopher D. 
Published: February 2014

AbstractThe hydroxy functional group directs the α‐functionalization of tertiary amines, synthesizing 1,3‐oxazines by C—O bond formation.
ChemInform Abstract: Organocatalysis for the Synthesis of Optically Active β‐Malonophosphonates.
Authors: Thorat Prashant B. , Goswami Santosh V. , Magar Rupali L. , Bhusare Sudhakar R. 
Published: February 2014

AbstractPhospha—Michael addition of P(O—Et)3 to benzylidenemalononitriles (I) in the presence of a proline‐based organocatalyst represents one of the most straightforward routes for the synthesis of optically active β‐malonophosphonates (III) (13 examples).
ChemInform Abstract: Norlathyrane Diterpenes from the Root of Euphorbia kansuensis
Authors: Zhang Bei‐Bei , Jiang Qian , Liao Zhi‐Xin , Liu Chao , Liu Shi‐Jun , Ji Lan‐Ju , Sun Hong‐Fa 
Published: February 2014

Abstractisolation and structure determinations of two novel norlathyrane diterpenes, ekanpenoid A (I) and B (II) with potent cytotoxic activities against HeLa and Hep‐G2 cell lines
ChemInform Abstract: New Pterosin Sesquiterpenes and Antitubercular Constituents from Pteris ensiformis.
Authors: Chen Jih‐Jung , Wang Tai‐Chi , Yang Chieh‐Kai , Liao Hsiang‐Ruei , Sung Ping‐Jyun , Chen Ih‐Sheng , Cheng Ming‐Jen , Peng Chien‐Fang , Chen Jinn‐Fen 
Published: February 2014

AbstractTwo new pterosin sesquiterpenes,13‐hydroxypterosin A (I) and 12‐hydroxypterosin Q (II) are isolated along with six known compounds.
Extent of pathologic extracapsular extension and outcomes in patients with nonoropharyngeal head and neck cancer treated with initial surgical resection
Authors: Prabhu Roshan S. , Hanasoge Sheela , Magliocca Kelly R. , Moeller Benjamin J. , Milas Zvonimir L. , Hall William A. , El‐Deiry Mark , Wadsworth J. Trad , Higgins Kristen A. , Beitler Jonathan J. 
Published: February 2014

BACKGROUNDLymph node extracapsular extension (ECE) is a known adverse prognostic factor in head and neck cancer and is an indication for adjuvant chemoradiation (CRT). However, the extent of ECE may provide additional prognostic information in the setting of adjuvant CRT.METHODSThis study included 350 patients with oral cavity cancer (72.6%) or bulky/nonfunctional laryngeal cancer (27.4%) who underwent initial surgical resection. Extent of ECE was graded from 0 to 4 based on the scale established by Lewis and colleagues. Multivariable analyses (MVA) were adjusted for primary site, pathologic risk factors, and adjuvant therapy.RESULTSIn univariate failure‐free survival (FFS) analysis, there was no significant difference in FFS for patients with lymph node‐positive disease and no ECE (grade 0) versus patients with ECE grades 1 through 3. However, patients with ECE grade 4 had significantly worse FFS. In MVA for FFS, differences between ECE grades 0 through 3 and grade 4 did not remain significant. In MVA of overall survival, ECE grade 4 was significantly associated with higher risk of death compared with ECE grade 0 (hazard ratio, 0.46; P = .02) and ECE grades 1 through 3 (HR, 0.41; P = .01).CONCLUSIONSDichotomous evaluation of ECE is useful for determining appropriate adjuvant therapy but has limited additional prognostic value in the setting of adjuvant CRT. The detrimental effect of ECE grades 1 through 3 relative to no ECE is effectively mitigated with adjuvant CRT, but ECE grade 4 retains a poorer prognosis despite CRT with regard to overall survival. Patients with ECE grade 4 may be candidates for trials investigating novel methods of adjuvant therapy intensification. Cancer 2014;120:1499–1506. © 2014 American Cancer Society.
A stateful storage availability and entropy model to control storage distribution on grids
Authors: Ma Jianwei , Liu Wanyu , Glatard Tristan 
Published: February 2014

SUMMARYIn spite of numerous works studying file replication strategies on distributed systems, data management policies remain mostly handled by manual operators or very basic algorithms on production grids. Among other causes, this situation is due to the lack of models taking job reliability into account. In this paper, we study file replication using new metrics to evaluate the reliability of distributed storage configurations. A stateful storage availability model is introduced to cope with the inability of the stateless model to account for the commonsense intuition that limiting the number of storage hosts involved in the execution of an application improves reliability. We describe the job success probability and the brittleness entropy, a metric describing the uncertainty of the job failure rate associated to a storage configuration. Results, obtained on synthetic data and on traces extracted from the European Grid Infrastructure, show that the stateful model is more accurate than the stateless on real data, and that it can describe the consequences of limiting the number of storage hosts on application reliability. These findings open the door to the design of new file replication strategies taking storage availability into account. Copyright © 2014 John Wiley & Sons, Ltd.
A power‐area‐efficient, 3‐band, 2‐RX MIMO, TD‐LTE receiver with direct‐coupled ADC
Authors: Huang Mo , Chen Dihu , Wang Zhao , Guo Jianping , Dagher Elias H. , Xu Bin , Xu Ken , Ye Hui , Zheng Weiguo , Liang Zhen , Liang Xiaofeng , Masenten Wesley K. 
Published: February 2014

SummaryIn this work, a power‐area‐efficient, 3‐band, 2‐RX MIMO, and TD‐LTE (backward compatible with the HSPA+, HSUPA, HSDPA, and TD‐SCDMA) CMOS receiver is presented and implemented in 0.13‐μm CMOS technology. The continuous‐time delta‐sigma A/D converters (CT ∆Σ ADCs) are directly coupled to the outputs of the transimpedance amplifiers, eliminating the need of analog anti‐aliasing filters between RX front‐end and ADCs in conventional structures. The strong adjacent channel interference without low‐pass filter attenuation is handled by proper gain control. A low‐power small‐area solution for excess loop delay compensation is implemented in the CT ∆Σ ADC. At 20 MHz bandwidth, the CT ∆Σ ADC achieves 66 dB dynamic range and 3.5 dB RX chip noise figure is measured. A maximum of 2.4 dB signal‐to‐noise ratio degradation is measured in all the adjacent channel selectivity (ACS) and blocking tests, demonstrating the effectiveness of the strategy against the low‐pass filter removal from the conventional architecture. The receiver dissipates a maximum of 171 mW at 2‐RX MIMO mode. To our best knowledge, it is the first research paper on the design of fully integrated commercial TD‐LTE receiver. Copyright © 2014 John Wiley & Sons, Ltd.
Universally composable three‐party password‐authenticated key exchange with contributiveness
Authors: Hu Xuexian , Zhang Zhenfeng , Zhang Qihui 
Published: February 2014

SummaryThree‐party password‐authenticated key exchange (3PAKE) allows two clients, each sharing a password with a trusted server, to establish a session key with the help of the server. It is a quite practical mechanism for establishing secure channels in a large communication network. However, most current 3PAKE protocols are analyzed in security models that do not adequately address protocol composition problem. In this paper, an ideal functionality for 3PAKE within the universal composability framework is defined, which not only provides security guarantees under arbitrary composition with other protocols but also achieves contributiveness and explicit authentication. Moreover, we propose a generic construction of contributory 3PAKE protocol and prove that it securely realizes the ideal functionality in the static corruption model. Copyright © 2014 John Wiley & Sons, Ltd.
Stimulation and Inhibition of Arabidopsis Seed Germination with Repetitive Barrier Discharges Produced by Polarity‐Reversed Voltage Pulses
Authors: Kadowaki Kazunori , Kurisaka Nobuyuki 
Published: February 2014

SUMMARYThis paper presents an experimental study of control of the germination of Arabidopsis seed with a barrier discharge produced by polarity‐reversed voltage pulses. 100 ns‐width polarity‐reversed pulses were applied to the seeds between plane electrodes covered by glass barriers. The electrode configuration allowed barrier discharge propagation along the seed surface at a relatively low voltage. After the discharge treatment, the seeds were incubated for 2 or 3 days to measure the germination rate. The relationships between the cumulative input energy density into the plasma and the germination rate were investigated. The germination rate was significantly reduced at 20 J/cm3. However, it increased at cumulative energy densities up to 50 J/cm3 and then decreased again on further energy input. These results suggest a superposition of two effects, stimulation and inhibition, of the discharge treatment on the germination of Arabidopsis seed. The results of Evans Blue dyeing of the discharge‐exposed seeds indicate that necrosis of the seed coat is caused by the discharge treatment.
Performance Comparison of Scramjet‐Driven Experimental DCW‐MHD Generators with Different Cross‐Sections
Authors: Niwa Naoyuki , Takahashi Toru , Fujino Takayasu , Ishikawa Motoo 
Published: February 2014

SUMMARYThe purpose of this study is to examine the influence of the shape of the cross‐section of a scramjet engine‐driven experimental diagonal conducting wall (DCW)‐MHD generator on generator performance by three‐dimensional numerical analyses. We have designed MHD generators with symmetric square and circular cross‐sections, based on an experimental MHD generator with an asymmetric square cross‐section. Under the optimum load conditions, the electric power output reaches 26.6 kW for the asymmetric square cross‐section, 24.6 kW for the symmetric square cross‐section, and 22.4 kW for the circular cross‐section. The highest output is obtained for the experimental generator with the asymmetric square cross‐section. The difference in the electric power output is induced by the difference of flow velocity and boundary layer thickness. For the generator with the asymmetric square cross‐section, the average flow velocity is highest and the boundary layer is thinnest. The compression wave is generated with dependence on the channel shape. The difference in the flow velocity and boundary layer thickness is induced by the superposition of the compression wave. © 2014 Wiley Periodicals, Inc. Electr Eng Jpn, 187(2): 9–16, 2014; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22403
SOC Estimation of HEV/EV Battery Using Series Kalman Filter
Authors: Baba Atsushi , Adachi Shuichi 
Published: February 2014

SUMMARYThis paper proposes a method of accurately estimating the state of charge (SOC) of rechargeable batteries in high fuel efficiency vehicles, such as hybrid electric vehicles (HEVs) and electric vehicles (EVs). Despite the importance of accurately estimating the SOC of batteries to achieve maximum efficiency and safety, no method thus far has been able to do so. This paper focuses on the simplification of a battery model, estimation of time‐varying battery parameters, and estimation of SOC in the presence of measurement noise. To address these three issues, a model‐based approach that uses a cascaded combination of two Kalman filters, “series Kalman filters,” is proposed and implemented. This approach is verified by performing a series of simulations in an HEV operating environment. The ultimate goal is to design a state estimator capable of accurately estimating the state of any kind of batteries under every possible user condition. © 2014 Wiley Periodicals, Inc. Electr Eng Jpn, 187(2): 53–62, 2014; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22511
Copper‐Catalyzed Regioselective Synthesis of N‐Aryl Amides from Aldoximes and Aryl Halides
Authors: Panda Niranjan , Mothkuri Raghavender , Nayak Dinesh Kumar 
Published: February 2014

AbstractLigand‐assisted copper‐catalyzed reaction of aldoximes with aryl halides is described for the regioselective synthesis of N‐aryl amides. This protocol is simple and compatible with a wide range of functional groups attached to the aryl ring of the halides as well as aldoximes.