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Abstract
Synth. Commun. 2005, 35, 1735
First Total Synthesis of Desmosdumotin C
Kyoko Nakagawa‐Goto,1 Jiu‐Hong Wu,2 and Kuo‐Hsiung Lee1
1Natural Products Laboratory, School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599‐7360, USA
2Department of Pharmacy, 306 Hospital, Beijing 100101, China
Desmosdumotin C (1), a novel compound isolated from the roots of Desmos dumosus, was synthesized from 2,4,6‐trihydroxyacetophenone (2), confirming the assigned structure of the natural product.
Abstract
Synth. Commun. 2005, 35, 1741
Organic Reactions in Ionic Liquids: Ionic Liquid‐Accelerated One‐Pot Synthesis of 2‐Arylimidazo[1,2‐a]Pyrimidine
Yuan‐Yuan Xie
College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, China
The room‐temperature ionic liquid n‐butylpyridinium tetrafluoroborate (BPyBF4) is used as a recyclable alternative to classical molecular solvents in the one‐pot synthesis of 2‐arylimidazo[1,2‐a]pyrimidines by reaction with ketones, [hydroxy(tosyloxy)iodo]benzene, and 2‐aminopyrimidine. Significant rate enhancements and improved yields have been observed.
Abstract
Synth. Commun. 2005, 35, 1747
Synthesis of Novel Spiroheterocyclic Framework via the Regioselective 1,3‐Dipolar Cycloaddition Reaction of Azomethine Ylides
Xiao‐Fen Hu and Ya‐Qing Feng
Department of Fine Chemicals, School of Chemical Engineering, Tianjin University, Tianjin, China
A new series of dispiro pyrrolidines 4 have been synthesized by the regioselective cycloaddition of azomethine ylides with compounds 1 in good yield.
Abstract
Synth. Commun. 2005, 35, 1753
Synthesis of Thiazolo[2,3‐c]‐s‐Triazoles Using Poly[(4‐Diacetoxyiodo)Styrene]
Shi‐juan Liu,1 Ji‐zhen Zhang,2 Guan‐rong Tian,3 and Ping Liu3
1College of Chemistry, Jilin Normal University, Siping, China
2Provincial Key Constructive Laboratory of Precious Metals Processing Technology and Application, Jiangsu Teachers University of Technology, Changzhou, China
3Department of Chemistry, Yanbian University, Yanji, Ji Lin, China
Abstract
Synth. Commun. 2005, 35, 1759
Rapid and High‐Yield Synthesis of Aryloxyacetates under Microwave Irradiation and Phase‐Transfer Catalysis Conditions
Tai‐Bao Wei, Hong Liu, Man‐Lin Li, and You‐Ming Zhang
Department of Chemistry, Gansu Key Laboratory of Polymer Materials, Northwest Normal University, Lanzhou, Gansu 730070, China
A series of methyl aryloxyacetates (3a–3f) have been synthesized by the reaction of substituted phenol with methyl chloroacetate under the conditions of microwave irradiation and phase‐transfer catalysis. By the optimization of the reaction conditions, we developed a good method for the preparation of methyl aryloxyacetates, which have the advantages of high yields, short reaction times, ease of workup, and simple operation.
Abstract
Synth. Commun. 2005, 35, 1765
Unusual p‐Toluene Sulfonic Acid–Catalyzed Carbon–Carbon Bond Formation
Shanmugam Govindan,1 Madhavi Maddipatla,1 Anil Kumar Podichetty,1 Prabhakahr Macharla,1 Venu Nalivela,1 Venkataraman Sundaram,1 Vijayavitthal T Mathad,1 Mahesh Reddy Ghanta,1 and Ravindra Kumar Yalavarti2
1Department of Research and Development, Dr. Reddy's Laboratories Ltd., S. V. Co‐Op. Ind. Estate, Bollaram, Jinnaram, Medak Dist., A.P., India
2Department of Analytical Research, Dr. Reddy's Laboratories Ltd., S. V. Co‐Op. Ind. Estate, Bollaram, Jinnaram, Medak Dist., A.P., India
Abstract
Synth. Commun. 2005, 35, 1769
Synthesis of Sporochnol A, a Marine Fish Deterrent
Bidyut Biswas and Ramanathapuram V. Venkateswaran
Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkatta 700 032, India
A synthesis of the methyl ether of the fish‐deterrent sporochnol A is described. The route involves the application of Claisen ortho‐ester rearrangement to generate the key quaternary carbon.
Abstract
Synth. Commun. 2005, 35, 1781
Facile and Simple Route to the Synthesis of Condensed Acridine Systems
Periyasamy Murugan,1 Kuo Chu Hwang,1 Dhakshanamurthy Thirumalai,2 and Vayalakavoor T. Ramakrishnan2
1Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan, China
2Department of Organic Chemistry, University of Madras, Chennai, India
Condensation of cyclohexane‐1,3‐dione or dimedone with o‐nitrobenzaldehyde and ammonium acetate/acetic anhydride furnished the corresponding acridinedione/xanthene derivatives. The middle ring aromatization followed by reductive cyclization afforded the respective condensed acridine systems.
Abstract
Synth. Commun. 2005, 35, 1789
Tetrahydropyranylation and Depyranylation of Alcohols Catalyzed by Aqueous Zinc Tetrafluoroborate
Samimul Islam,1 Adinath Majee,1 and A. T. Khan2
1Department of Chemistry, Visva‐Bharati, Santiniketan, West Bengal, India
2Department of Chemistry, Indian Institute of Technology, North Guwahati, Guwahati, India
Abstract
Synth. Commun. 2005, 35, 1795
MW‐Enhanced High‐Speed Deprotection of Boc Group using p‐TsOH and Concommitant Formation of N‐Me‐Amino Acid Benzyl Ester p‐TsOH Salts
Vommina V. Suresh Babu, Basanagoud S. Patil and Ganga‐Ramu Vasanthakumar
Department of Studies in Chemistry, Bangalore University, Bangalore, India
A high‐speed, complete deprotection of Boc group grom Boc‐amino acids and protected peptide esters employing p‐TsOH in toluene under microwave irradiation and synthesis of N‐Me amino acid benzyl esters starting from Boc‐N‐Me amino acids in a single step is carried out.
Abstract
Synth. Commun. 2005, 35, 1803
Novel and Efficient Synthesis of Water‐Soluble [60]Fullerenol by Solvent‐Free Reaction
Sheng Wang,1 Ping He,2 Jian‐Min Zhang,1 Hu Jiang,1 and Shi‐Zheng Zhu2
1Department of Chemistry, School of Science, Shanghai University, Shanghai, China
2Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai, China
Water‐soluble fullerenol was conveniently synthesized via the direct solvent‐free reaction of fullerene with a mixture of H2O2 and NaOH under grinding conditions in air at room temperature. This practical method provides a novel convenient and efficient access to water‐soluble fullerenol in excellent yield.
Abstract
Synth. Commun. 2005, 35, 1809
Epoxidation of Protected (1,4,5)‐Cyclohex‐2‐ene‐triols and Their Acid Hydrolysis to Synthesize Quercitols from D‐( − )‐Quinic Acid
Tzenge‐Lien Shih and Ya‐Ling Lin
Department of Chemistry, Tamkang University, Tamsui, 25137 Taipei County, Taiwan, Republic of China
Abstract
Synth. Commun. 2005, 35, 1819
Enantioselective Addition of Diethylzinc to Aromatic Aldehydes Catalyzed by New Chiral Oxazolidine Ligand
Yong‐feng Kang,1 Lei Liu,1 Rui Wang,1,2 Ming Ni,1 and Zhi‐jian Han1
1Department of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, China
2State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, Gansu, China
Abstract
Synth. Commun. 2005, 35, 1825
Preparation of 4‐Arylcyclopentenes by Sequential Diallylation of Arylaldehydes and Ring‐Closing Metathesis
Anne‐Catherine Durand,1 Lamia Brahmi,2 Mokhtar Lahrech,2 Salih Hacini,2 and Maurice Santelli1
1Laboratoire de Synthèse Organique, UMR 6180 CNRS and Université Paul Cézanne (Aix‐Marseille III): Chirotechnologies: Catalyse et biocatalyse, Faculté de St‐Jérôme, Marseille, France
2Laboratoire de Synthèse Organique, Université d'Oran Es Sénia, Oran, Algérie
Abstract
Synth. Commun. 2005, 35, 1835
Efficient Hexamethylenetetramine‐Bromine (HMTAB)‐Catalyzed Synthesis of Bis(indolyl)Methanes in Water
Mohammad Bagher Teimouri and Houri Mivehchi
Iran Polymer and Petrochemical Institute, Tehran, Iran
Abstract
Synth. Commun. 2005, 35, 1845
Facile and Inexpensive Entry to Indeno[2,1‐b]indol‐6‐one Nucleus
Giorgio Abbiati, Valentina Canevari, Elisabetta Rossi and Alberto Ruggeri
Istituto di Chimica Organica “Alessandro Marchesini,” Facoltà di Farmacia, Università degli Studi di Milano, Milan, Italy
Abstract
Synth. Commun. 2005, 35, 1851
Homocoupling of Aryl Iodides and Bromides Using a Palladium/Indium Bimetallic System
Yu Mi Chang,1 Seung Hwan Lee,1 Min Young Cho,2 Byung Woo Yoo,2 Hak June Rhee,3 Sang Ho Lee,1 and Cheol Min Yoon2
1Graduate School of Biotechnology, Korea University, South Korea
2Department of New Material Chemistry, Korea University, South Korea
3College of Science and Technology, Hanyang University, South Korea
Homocoupling of aryl iodides and bromides using catalytic amounts of palladium and stoichiometric amounts of indium proceeded smoothly to afford the corresponding biaryls in good to high yields.
