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Abstract
Graphical Abstract Section
Abstract
Synth. Commun. 2006, 36, 2927
OXIDATIVE CYCLIZATION OF AROMATIC ALDEHYDE N-ACYLHYDRAZONES BY BIS(TRIFLUOROACETOXY)IODOBENZENE
Zhenhua Shang
College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang, China
Aromatic aldehyde N-acylhydrazones were oxidized into 2,5-disubstituted 1,3,4-oxadiazoles with bis(trifluoroacetoxy)iodobenzene in CHCl3 or DMSO at room temperature in good to excellent yields.
Abstract
Synth. Commun. 2006, 36, 2939
ONE‐POT WITTIG REACTIONS IN AQUEOUS MEDIA: A RAPID AND ENVIRONMENTALLY BENIGN SYNTHESIS OF α,β‐UNSATURATED CARBOXYLIC ESTERS AND NITRILES
Jinlong Wu and Congyong Yue
Laboratory of Asymmetric Catalysis and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou, China
Abstract
Synth. Commun. 2006, 36, 2949
EXPEDITIOUS APPROACH TO COUMARINS VIA PECHMANN REACTION CATALYZED BY MOLECULAR IODINE OR AGOTF
Jie Wu, Tianning Diao, Wei Sun, and Yizhe Li
Department of Chemistry, Fudan University, Shanghai, China
An efficient and facile route for the synthesis of coumarins via Pechmann reaction catalyzed by molecular iodine or AgOTf was described.
Abstract
Synth. Commun. 2006, 36, 2957
HIGHLY EFFICIENT DINITRATION OF AROMATIC COMPOUNDS IN FLUOROUS MEDIA USING YTTERBIUM PERFLUOROOCTANESULFONATE AND PERFLUOROOCTANESULFONIC ACID AS CATALYSTS
Wen-Bin Yi and Chun Cai
Chemical Engineering College, Nanjing University of Science and Technology, Nanjing, China
Abstract
Synth. Commun. 2006, 36, 2963
FACILE SYNTHESIS OF PYRAZOLO[3,4-D]PYRIMIDINES AND PYRIMIDO[4,5-D]PYRIMIDIN-4-ONE DERIVATIVES
Sanjay Babu Katiyar, Arun Kumar, and M. S. Chauhan
Medicinal and Process Chemistry Division, Central Drug Research Institute, Lucknow, India
Pyrazolopyrimidine and primidophrimidine dervatives have a shown wide range of biological activities such as acting as A1 adenosine receptors, KDR, Src, EGFR, antiproliferative, DHFR, antimicrobial, antifungal, and lipid peroxidation. Because of this wide range of activities, we have synthesized pyrazolo[3,4-d]pyrimidines and pyrimido[4,5-d]pyrimidin-4-one derivatives.
Abstract
Synth. Commun. 2006, 36, 2975
REGIOSPECIFIC PHENYL ESTERIFICATION TO SOME ORGANIC ACIDS CATALYZED BY COMBINED LEWIS ACIDS
H. N. Roy and A. H. Al Mamun
Department of Chemistry, University of Rajshahi, Rajshahi, Bangladesh
Abstract
Synth. Commun. 2006, 36, 2983
JUNJAPPA–ILA (JI) HETEROAROMATIC ANNULATION: A NEW GENERAL α-OXOKETENE DITHIOACETALS MEDIATED INVERSE METHOD FOR SYNTHESIS OF SUBSTITUTED BENZOTHIAZOLES
Vinayak S. Hegde, Gundurao D. Kolavi, and Imtiyaz Ahmed M. Khazi
Department of Chemistry, Karnatak University, Dharwad, India
Benzothiazoles were synthesized for the first time from the properly substituted thiazole using the Junjappa–Ila (JI) heteroaromatic annulation protocol.
Abstract
Synth. Commun. 2006, 36, 2991
EFFICIENT ROOM-TEMPERATURE SYNTHESIS OF TRI- AND TETRASUBSTITUTED IMIDAZOLES CATALYZED BY ZRCL4
G. V. M. Sharma, Y. Jyothi, and P. Sree Lakshmi
Indian Institute of Chemical Technology, Hyderabad, India
A general protocol for the synthesis of 2,4,5-trisubstituted and 1,2,4,5-tetra substituted imidazoles in high yields using ZrCl4 as an efficient catalyst at room temperature is reported. A variety of aldehydes underwent condensation with NH4OAc/amines to give the imidazoles and imidazole glycoconjugates.
Abstract
Synth. Commun. 2006, 36, 3001
REACTIVITY OF CHIRAL SESQUITERPENE SYNTONS OBTAINED BY THE DEGRADATION OF MASLINIC ACID FROM OLIVE-PRESSING RESIDUES
A. García-Granados, P. E. López, E. Melguizo, A. Parra, and Y. Simeó
Departamento de Química Orgáca, F. Ciencias, Universidad de Granada, Granada, Spain
The chemical behavior of sesquiterpene fragments from maslinic acid was studied by performing several chemical and enzymatic reactions and affording chiral synthons of use in the semisynthesis of other naturally occurring compounds.
Abstract
Synth. Commun. 2006, 36, 3019
SUZUKI COUPLING OF 2-CHLOROACRYLONITRILE, METHYL 2-CHLOROACRYLATE, OR 2-CHLOROPROP-1-EN-3-OL WITH ARYLBORONIC ACIDS CATALYZED BY A PALLADIUM-TETRAPHOSPHINE COMPLEX
Florian Berthiol, Henri Doucet, and Maurice Santelli
UMR 6180 CNRS and Université d'Aix-Marseille III, Laboratoire de Synthèse Organique, Faculté des Sciences de Saint Jérôme, Marseille, France
Abstract
Synth. Commun. 2006, 36, 3029
CONVENIENT SYNTHESIS OF OXAZOLIDINONES AND OXAZINONES FROM ALLYL AND HOMOALLYL AMINES UNDER MILD CONDITIONS
Eduardo García-Egido, Isabelle Fernández, and Luis Muñoz
Department of Organic Chemistry, Faculty of Chemistry, University of Vigo, Vigo, Spain
Abstract
Synth. Commun. 2006, 36, 3043
IONIC LIQUID–MEDIATED KNOEVENAGEL CONDENSATION OF MELDRUM'S ACID AND ALDEHYDES
Nitin B. Darvatkar, Amol R. Deorukhkar, Sachin V. Bhilare, and Manikrao M. Salunkhe
Department of Chemistry, Institute of Science, Mumbai, India
Abstract
Synth. Commun. 2006, 36, 3053
[EMIM]BF4‐PROMOTED CHLOROMETHYLATION OF AROMATIC HYDROCARBONS
Yun Wang, Zhi‐Cai Shang, and Tian‐Xing Wu
Department of Chemistry, Zhejiang University, Hangzhou, China
The chloromethlaytion of aromatic hydrocarbons proceeded efficiently using the reusuable ionic liquid [emim]BF4 as promoter. The reactions were completed in 5 h at 70°C with good yields and easy workup.
Abstract
Synth. Commun. 2006, 36, 3061
FERRIC(III) NITRATE SUPPORTED ON KIESELGUHR: A NEW REAGENT FOR SELECTIVE OXIDATION OF ALCOHOLS
Ji-Dong Lou,1 Long-Hua Zhu,1 Yi-Chun Ma,1 and Li Li2
1College of Life Sciences, China Institute of Metrology, Hangzhou, Zhejiang, China
2Instituto Superior Tecnico, Lisbon, Portugal
Abstract
Synth. Commun. 2006, 36, 3065
MILD AND CONVENIENT SYNTHESIS OF 1,2-DIHYDROQUINOLINES FROM ANILINES AND ACETONE CATALYZED BY YTTERBIUM(III) TRIFLATE IN IONIC LIQUIDS
Yongshu Li, Chunlei Wu, Jianliang Huang, and Weike Su
Zhejiang Key Laboratory of Pharmaceutical Engineering, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, China
A mild, convenient, and efficient process has been developed for the synthesis of 2,2,4-trimethyl-1,2-dihydroquinolines by the reaction of anilines with acetone catalyzed by ytterbium(III) triflate [Yb(OTf)3] in ionic liquids. The catalyst and ionic liquids can be easily recovered and reused, making this method friendly and environmentally acceptable. Good yields, simple operation, and short reaction times are some of the important features of this new method.
Abstract
Synth. Commun. 2006, 36, 3075
SUPEROXIDE-MEDIATED REGIOSELECTIVE DEBLOCKING OF THE TOSYL GROUP FROM N-TOSYLCARBOXAMIDES
R. S. Raghuvanshi and K. N. Singh
Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi, India
In situ–generated tetraethylammonium superoxide brings about an easy and selective cleavage of the N‐S bond of N-tosylcarboxamides, providing a new method for the deblocking of the tosyl group from such substrates.
Abstract
Synth. Commun. 2006, 36, 3079
ZnBR2‐CATALYZED EFFICIENT OXIDATIVE HOMO COUPLING OF ARYL MAGNESIUM BROMIDES
S. Ravi Kanth, G. Venkat Reddy, T. Yakaiah, B. Narsaiah, and P. Shanthan Rao
Fluoroorganic Division, Indian Institute of Chemical Technology, Hyderabad, India
Oxidative homo coupling of various arylmagnesium bromides in the presence of ZnBr2 gave the corresponding symmetrical biaryls in moderate to good yields at room temperature. An efficient method under mild conditions without the use of reoxidant is described.
Abstract
Synth. Commun. 2006, 36, 3085
SYNTHESIS OF NOVEL CLASSES OF PYRIDO[2,3‐D]‐PYRIMIDINES, PYRANO[2,3‐D]PYRIMIDINES, AND PTERIDINES
Mohit Lal Deb and Pulak J. Bhuyan
Medicinal Chemistry Division, Regional Research Laboratory, Jorhat, Assam, India
6‐Amino‐5‐formyluracils 1 and 5‐formyl‐6‐hydroxyuracils 4 react with Meldrum's acid 2 in the presence of piperidine as catalyst under thermolytic conditions to afford 6‐carboxy‐2,4,7‐trioxopyrido[2,3‐d] pyrimidines 3 and 6‐carboxy‐2,4,7‐trioxopyrano[2,3‐d]pyrimidines 5 in good yield. Under identical conditions, 6‐amino‐5‐nitrosouracils 6 react with 2 to afford pteridine‐6‐carboxylic acids 7 in good yields.
Abstract
Synth. Commun. 2006, 36, 3091
FORMAL TOTAL SYNTHESIS OF (±)-OCCIDOL
William J. Vera and Ajoy K. Banerjee
Centro de Química, Instituto Venezolano de Investigaciones Cientificas (IVIC), Caracas, Venezuela
