Graphical Abstracts

Abstract

Synth. Commun. 2004, 34, 199

A Convenient Method for the Preparation of 7-Cyanocamptothecins and 7-Cyanomappicine Ketones

Biswanath Das,* K. V. N. S. Srinivas, I. Mahender, N. Ravindranath, and C. Ramesh

Organic Chemistry Division-I, Indian Institute of Chemical Technology, Hyderabad, India

Abstract

Synth. Commun. 2004, 34, 205

Microwave-Assisted Solvent-Free Synthesis of trans-Cinnamic Acids Using Lithium Chloride as Catalyst

K. Mogilaiah* and G. Randheer Reddy

Department of Chemistry, Kakatiya University, Warangal, India

trans-Cinnamic acids are prepared in a solventless operation by microwave irradiation of aromatic aldehydes and malonic acid in the presence of lithium chloride as catalyst.

Abstract

Synth. Commun. 2004, 34, 211

An Efficient and Regioselective Deprotection Method for Acetylated Glycosides

Jubiao Li and Yanguang Wang*

Department of Chemistry, Zhejiang University, Hangzhou, P.R. China

A new regioselective 2-O-deacetylation methodology of acetylated glycosides using 85% hydrazine hydrate in THF is described. Using this method, acetylated 1-thio-glycoside could also be selectively deprotected to give 3-O-deprotected compound.

Abstract

Synth. Commun. 2004, 34, 219

Soluble Polymer-supported Synthesis of α-Amino Acid Derivatives

Chunling Hu, Zuxing Chen,* and Guichun Yang

Faculty of Chemistry and Material Science, Hubei University, Wuhan, Hubei, P.R. China

A practical and efficient synthesis of N-substituted α-amino acid derivatives on soluble polymer support is described.

Abstract

Synth. Commun. 2004, 34, 225

Effect of Ionic Liquids on the Chemical Equilibrium of Esterification of Carboxylic Acids With Alcohols

Tao Jiang, Yanhong Chang, Guoying Zhao, Buxing Han,* and Guanying Yang

Center for Molecular Science, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, P.R. China

The esterification of carboxylic acids with alcohols catalyzed by para-toluene sulfonic acid (pTSA) was studied in different room temperature ionic liquids. The chemical equilibrium of esterification can be tuned by using ionic liquids as solvents.

Abstract

Synth. Commun. 2004, 34, 239

First Synthesis of a Trisaccharide of Glycosylkaemferide: A Resistance Factor in Carnations

Mamoru Koketsu,* Motoaki Kuwahara, Hisako Sakurai and Hideharu Ishihara*

Department of Chemistry, Faculty of Engineering, Gifu University, Gifu, Japan

A trisaccharide of glycosylkaemferide, a resistance factor in carnation, was synthesized in a practical way.

Abstract

Synth. Commun. 2004, 34, 247

A Simple and Efficient Method for the Preparation of Heterocyclic N-Oxide

Ping Zhong,^1,* Sheng-rong Guo,^1,2 and Cai-sheng Song²

¹Department of Chemistry, Wenzhou Normal College, Wenzhou, P.R. China

²Department of Chemistry, Jiangxi Normal University, Nanchang, P.R. China

Heterocyclic nitrogen compounds 1 are readily oxidized to heterocyclic N-oxides 3 by a solution of water, acetic acid, sodium acetate and trichloroisocyanuric acid 2 in acetonitrile and methylene chloride.

Abstract

Synth. Commun. 2004, 34, 255

A Convenient Synthesis of Novel N′-tert-butyl-N′-Substituted Benzoyl-N-(Substituted Phenyl)aminocarbonylhydrazines and Their Derivatives

Qingmin Wang and Runqiu Huang*

State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, P.R. China

N-tert-Butyl-N-substituted benzoylhydrazines were prepared in two convenient procedures with good yields.

Abstract

Synth. Commun. 2004, 34, 265

Samarium Mediated Reductive Coupling Cyclization of α-Phenylsulfonylcinnamonitriles Catalyzed by Viologen under Room Temperature Conditions

Xingliang Zheng¹ and Yongmin Zhang^1,2,*

¹Department of Chemistry, Zhejiang University, Campus Xixi, Hangzhou, P.R. China

²State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, P.R. China

Abstract

Synth. Commun. 2004, 34, 275

Synthesis of Triindolylmethanes Catalyzed by Zeolites

Jun Li,^1,2 Min Zhou,¹ Bogang Li,¹ and Guolin Zhang^1,*

¹Chengdu Institute of Biology and ²Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, China

Various triindolylmethanes were synthesized by condensation of indole (or its derivatives) with indole-3-carboxaldehyde using solid acids as catalysts.

Abstract

Synth. Commun. 2004, 34, 281

One Pot Electrooxidative Conversion of Benzyl Type Alcohols Into the Corresponding Methyl Carboxylates

Mitsuhiro Okimoto,* Yuji Nagata, Satoru Sueda, and Yukio Takahashi

Department of Applied Chemistry and Circumstance Engineering, Kitami Institute of Technology, Kitami, Japan

One-pot conversion of several benzyl type alcohols into the corresponding methyl carboxylates was carried out by indirect electrooxidation using iodide ion as the electron carrier.

Abstract

Synth. Commun. 2004, 34, 287

The Alkoxy Substitution Reaction on α-Oxo Ketene Dithioacetals: A New Access to α-Oxo Ketene O,S-/O,O-Acetals

Mang Wang, Xian-Xiu Xu, Shao-Guang Sun, and Qun Liu*

Department of Chemistry, Northeast Normal University, Chang Chun, P.R. China

The substitution reaction of alkylthio group of α,α′-dioxo ketene dibenzylthioacetals by alkoxy group was performed successfully. This transformation provides a facile route to the useful α,α′-dioxo ketene O,S- and O,O-acetals.

Abstract

Synth. Commun. 2004, 34, 297

Oxidation of Thiols with Dinitrogen Tetroxide

Thomas Kramer* and Thorsten Röder*

Fakultät für Naturwissenschaften, Department Chemie, Universität Paderborn, Paderborn, Germany

Abstract

Synth. Commun. 2004, 34, 303

Selective Removal of Benzyl Carbonate Used as a Protecting Group in Carbohydrate Chemistry

Fouzi Mouffouk, Alain Morère,* Sébastien Vidal, Alain Leydet, and Jean-Louis Montero

Laboratoire de Chimie Biomoléculaire, UMR 5032 Université Montpellier II–ENSCM, Montpellier, France

A selective, clean and efficient removal of benzyl carbonate was achieved under various conditions. Interestingly, benzyl carbonate could be selectively cleaved using aminolysis conditions.

Abstract

Synth. Commun. 2004, 34, 309

Pinacol-pinacolone Rearrangement on FeCl₃ Modified Montmorillonite K10

Ajit B. Shinde, Nilesh B. Shrigadi, Ramakrishna P. Bhat, and Shriniwas D. Samant*

Organic Chemistry Research Laboratory, Institute of Chemical Technology, University of Mumbai, Matunga, Mumbai, India

Pinacol-pinacolone rearrangement was investigated over Fe-modified montmorillonite K10 catalysts in liquid phase. 100% conversion of the benzopinacol was observed in 10 minutes. The catalysts are recyclable.

Abstract

Synth. Commun. 2004, 34, 315

Microwave-assisted Solvent-free Synthesis of the Substituted Spiroindolinonaphth[2,1-b][1,4]oxazines

A. V. Koshkin,¹ O. A. Fedorova,^1,* V. Lokshin,² R. Guglielmetti,² J. Hamelin,³ B. F. Texier-Boullet,³ S. P. Gromov¹

Abstract

Synth. Commun. 2004, 34, 331

Synthesis of Symmetrical Methylenebis(Alkyl Hydrogen Phosphonates) by Selective Cleavage of Methylenebis(Dialkyl Phosphonates) with Morpholine

Gantla Vidyasagar Reddy,¹ Hollie K. Jacobs,¹ Aravamudan S. Gopalan,^1,* Richard E. Barrans Jr.,² Mark L. Dietz,² Dominique C. Stepinski,³ and Albert W. Herlinger³

¹Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM, USA

²Chemistry Division, CHM/200, Argonne National Laboratory, Argonne, IL, USA

³Chemistry Department, Loyola University Chicago, Chicago, IL, USA

A variety of dialkyl bisphonic acids can be readily prepared by a selective hydrolysis using morpholine.

Abstract

Synth. Commun. 2004, 34, 345

Multistep Microwave-assisted Solvent-free Organic Reactions: Synthesis of 4-Oxo-tetrahydro-pyridine

Mauro Panunzio,^1,* Maria Antonietta Lentini,¹ Eileen Campana,² Giorgio Martelli,² Emiliano Tamanini,¹ and Paola Vicennati²

¹I. S. O. F.-C.N.R, Dipartimento di Chimica “G. Ciamician,” Bologna, Italy

²I. S. O. F.-C.N.R, Bologna, Italy

A microwave mediated multistep total synthesis of 4-oxo-tetrahydro-pirydines is described.

Abstract

Synth. Commun. 2004, 34, 361

Hypervalent Iodine in Synthesis 94: A Facile Synthesis of 2-Substituted-imidazo[1,2-a]pyridines by Cyclocondensation of Alkynyl(phenyl)iodonium Salts and 2-Aminopyridine

Zhi Liu,^1,2 Zhen-Chu Chen,^1,2,* and Qin-G. Zheng³

¹Ningbo Institute of Technology, Zhejiang University, Ningbo, P.R. China

²Department of Chemistry, Zhejiang University, XiXi Campus, Hangzhou, P.R. China

³Pharmaceutical Sciences Research Institute, Aston University, Birmingham, UK

A facile method for the synthesis of 2-substituted-imidazo[1,2-a]pyridines is achieved by cyclocondensation of alkynyl(phenyl)iodonium salts with 2-amino-pyridine.

Abstract

Synth. Commun. 2004, 34, 369

Preparation of Novel 1,2,3-Triazoles and a Comparative Study Involviing Two Recent Methods for 1,2,3-Triazole Synthesis

Júlio Onésio Ferreira Melo,¹ Patrícia Melo Ratton,² Rodinei Augusti,² and Claudio Luis Donnici^2,*

¹Centro Universitário de Patos de Minas—Funda¸ão Educacional de Patos de Minas, Universidade do Estado de Minas Gerais, Brazil

²Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais-Belo Horizonte—MG, Brazil