Graphical Abstracts

Abstract

Synth. Commun. 2003, 33, 2757

Lewis Acid-Catalyzed Cyclotrimerization of Methyl 3-Acetylazulene-1-Carboxylate in Alcohols

Satoko Yamashiro¹ and Kimiaki Imafuku^2,*

¹Department of Materials and Life Science, Graduate School of Science and Technology, Kumamoto University, Kurokami, Kumamoto, Japan

²Department of Chemistry, Faculty of Science, Kumamoto University, Kurokami, Kumamoto, 860-8555, Japan

Abstract

Synth. Commun. 2003, 33, 2763

A New and Efficient Method for the Synthesis of 2,2′-Dibromo-1,1′-Binaphthyl Under Microwave Irradiation

Li-wen Xu, Fu-wei Li, Chun-gu Xia,* and Wei Sun

State Key Laboratory of Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou, 73000, P.R. China

A very simple and efficient method to prepare 2,2′-dibromo-1,1′-binaphthyl via two-step procedure from β-naphthol in good yield under microwave irradiation is described.

Abstract

Synth. Commun. 2003, 33, 2769

Convenient Preparation of 3,6-Dialkyl-1,6-dihydro-s-tetrazines

Yaquan Sun, Weixiao Hu,* and Qing Yuan

Institute of Pharmaceutical Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China

Using Pd/C in place of PtO₂ as catalyst, a convenient synthesis of 1,6-dihydro-s-tetrazine from aledehyde has presented. This method is accessible.

Abstract

Synth. Commun. 2003, 33, 2777

Free Radical Reaction of Dialkyl Phosphites and Organic Dichalcogenides: A New Facile and Convenient Preparation of Arylselenophosphates

Qing Xu,^1,2 Chun-Gen Liang,^1,2 and Xian Huang^1,2,*

¹Department of Chemistry, Zhejiang University (Xixi Campus), Hangzhou 310028,P.R. China

²Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P.R. China

Abstract

Synth. Commun. 2003, 33, 2787

Highly Catalytic Enantioselective Epoxidation of Enones with Weak Base Bicarbonate and Hydrogen Peroxide

Chao-Shan Da,¹ Jie Wei,¹ Shou-Liang Dong,¹ Zhuo-Qun Xin,¹ Da-Xue Liu,¹ Zhao-Qin Xu,¹ and Rui Wang^1,2,*

¹Department of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China

²State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China

Abstract

Synth. Commun. 2003, 33, 2793

Catalytic Asymmetric Oxidation of Alkyl Aryl Sulfides Mediated by a Series of Chiral N-Alkyl-1,2-diphenylaminoethanol/Titanium/Water Complexes

YunGui Peng,¹ XiaoMing Feng,^2,* Xin Cui,³ YaoZhong Jiang,^3,* Michael C. K. Choi,⁴ and Albert S. C. Chan⁴

¹The School of Chemistry and Chemical Engineering, Southwest Normal University, BeiBei, ChongQing 400715, China

²Sichuan Key Laboratory of Green Chemistry and Technology, College of Chemistry, Sichuan University, Chengdu 610064, China

³Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China

⁴Open Laboratory of Chirotechnology and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hong Kong, China

Abstract

Synth. Commun. 2003, 33, 2803

The Preparation of Butyrylated NAD⁺ Type of Biological Molecules

Ki-Jun Hwang,^1,* Beom-Tae Kim,¹ and Uh-Hyun Kim²

¹Department of Chemistry, and Research Center of Bioactive Materials, College of Natural Science, and ²Department of Biochemistry, Medical School, Chonbuk National University, Dukjindong 664-14, Chonju, S. Korea 561-756

Abstract

Synth. Commun. 2003, 33, 2811

A Mild and Efficient Method of Synthesis of a Series of New Multi-Dentate Ligands

Hui An Tang^1,2,*, Sheng Yang,¹ and Ru Dong Yang¹

¹Chemistry Department of TianShui Normal University, TianShui, Gansu, P.R. China; ²College of Chemistry and Chemical Engineering of LanZhou University, P.R. China

Abstract

Synth. Commun. 2003, 33, 2817

Organic Reactions in Ionic Liquids: Alkylation of Meldrum's Acid

Ce Su,² Zhen-Chu Chen,^1,2,* and Qin-Guo Zheng³

¹Ningbo Institute of Technology, Zhejiang University, Ningbo, 315104, P.R. China

²Department of Chemistry, Zhejiang University (Xi-Xi campus), Hangzhou, 310028, P.R. China

³Pharmaceutical Sciences Research Institute, Aston University, Aston Triangle, Birmingham B4 7ET, UK

Abstract

Synth. Commun. 2003, 33, 2823

A Convenient Synthesis of 3,5-Diaryl-1,2,4-selenadiazoles

Xian Huang^1,2,* and Jiangmin Chen¹

¹Department of Chemistry, Zhejiang University (Xixi Campus), No. 148, Tianmushan Road, Hangzhou, 310028, P.R. China

²State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, P.R. China

3,5-Diaryl-1,2,4-selenadiazoles were prepared in high yields from primary selenoamides using poly[styrene(iodosodiacetate)] as oxidant. The polymer reagent could be regenerated and reused.

Abstract

Synth. Commun. 2003, 33, 2829

Acetonyltriphenylphosphonium Bromide and its Polymer-Supported Analogues as Catalysts for the Protection of Carbonyl Compounds as Acetals or Thioacetals

Yung-Son Hon,^1,2,* Chia-Fu Lee,¹ Rong-Jiunn Chen,¹ and Yi-Fen Huang¹

¹Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi, Taiwan 621, R.O.C.

²Institute of Chemistry, Academia Sinica, Nankang, Taipei, Taiwan 115, R.O.C.

Abstract

Synth. Commun. 2003, 33, 2843

A Facile and Selective Synthesis of 2-Alkylamino-4(3H)-quinazolinones

Yi Liang, Ming-Wu Ding,* Zhao-Jie Liu, and Xiao-Peng Liu

Institute of Organic Synthesis, Central China Normal University, Wuhan, 430079, P.R. China

The carbodiimides 2, obtained from aza–Wittig reactions of iminophosphorane 1 with aromatic isocyanates, reacted with aliphatic primary amines to give mainly 2-alkylamino-4(3H)-quinazolinones 4 with unusual selectivity.

Abstract

Synth. Commun. 2003, 33, 2849

Facile Synthesis of 2-Aroyl-3,5-diarylthiophene

Jin-Xian Wang,* Xiaoning Shi, Xiuqin Men, and Lianbiao Zhao

Institute of Chemistry, Department of Chemistry, Northwest Normal University, 805 An Ning Road (E.) Lanzhou, 730070, P.R. China

2-Aroyl-3,5-diarylthiophenes were prepared in very good yields by reaction of 2,4,6-triarylpyrylium salts or 2,4,6-triarylthiopyrylium salts with an aqeous solution of sodium sulfide and iodine at room temperature.

Abstract

Synth. Commun. 2003, 33, 2857

Highly Diastereoselective Preparation of Cyclic Sulfates From Allyl and Homoallyl Alcohols via One-Pot Halocyclosulfations

Masahiro Inoue, Shinji Motomatsu, and Masahisa Nakada*

Department of Chemistry, School of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, 169-8555, Tokyo, Japan

Diastereoselective electrophilic heteroatom cyclizations of the monosulfates of homoallyl and allyl alcohols are described.

Abstract

Synth. Commun. 2003, 33, 2867

Selenium-Linking Strategy for Traceless Solid-Phase Synthesis of Acrylamides

Shou-Ri Sheng,* Xing-Cong Wang, Xiao-Ling Liu, and Cai-Sheng Song

Department of Chemistry, Jiangxi Normal University, Nanchang, 330027, P.R. China

A novel polystyrene-supported β-selenopropionic acid has been developed and applied to simple and efficent synthesis of acrylamides.

Abstract

Synth. Commun. 2003, 33, 2873

Stereospecific Synthesis of trans-2,3-Diaryl Substituted 1-Aminocyclopropanecarboxylic Acid Derivatives

Guifa Su,^1,2,3,* Hongtao Mu,² Danming Za,² Longmei Zeng,¹ Carlos Cativiela,³ Robert P. Hammer,⁴ and Kaibei Yu⁵

¹College of Chemistry and Chemical Engineering, Zhongshan University, Canton 510275, P.R. China

²Department of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, P.R. China

³Department of Organic Chemistry, ICMA, University of Zaragoza, Zaragoza 50009, Spain

⁴Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA

⁵Chengdu Analysis and Testing Center, Academia Sinica, Chengdu 610041, P.R. China

Abstract

Synth. Commun. 2003, 33, 2885

One-Pot Preparation of Esters From Carboxylic Acids Using the PPh₃–CCl₃CN System

Doo Ok Jang,^1,* Dae Hyan Cho,¹ and Joong-Gon Kim²

¹Department of Chemistry, Yonsei University, Wonju 220-710, Korea

²Biotechnology Division, Hanwha Chemical R & D Center, Taejon 305-345, Korea

A convenient one-pot process for preparing various esters from carboxylic acids using the Ph₃P–CCl₃CN has been developed. Racemic α-tocopherol, clofibrate, and flavoxate were prepared in high yields using this method.

Abstract

Synth. Commun. 2003, 33, 2891

Solvent-Free Synthesis of 2-Furyl-5-aryloxyacetylamido-1,3,4-thiadiazoles Under Microwave Irradiation

Xicun Wang, Zheng Li,* Zhengjun Quan, Xinsheng Lu, and Ruhu Gou

College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu, 730070, P.R. China

A practical solvent-free method for the preparation of 2-furyl-5-aryloxyacetylamido-1,3,4-thiadiazoles under microwave irradiation is described.

Abstract

Synth. Commun. 2003, 33, 2899

An Improved Synthesis of N -Substituted-2-Nitroanilines

S. M. S. Chauhan,* Ram Singh, and Geetanjali

Department of Chemistry, University of Delhi, Delhi-110 007, India

The reaction of 2-chloronitrobenzene with substituted amines/anilines in the presence of DBU gives N-substituted-2-nitroanilines in >75–90% yield.

Abstract

Synth. Commun. 2003, 33, 2907

Stereoselective Synthesis of (−)-Cytoxazone and (+)-5-Epi-Cytoxazone

A. Ravi Kumar, G. Bhaskar, A. Madhan, and B. Venkateswara Rao*

Division of Organic Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 007, India

Abstract

Synth. Commun. 2003, 33, 2917

Iodination of Enol Acetates and 1,3-Diones Using N-Iodosaccharin

Darko Dolenc*

University of Ljubljana, Faculty of Chemistry and Chemical Technology, Aškerčeva, 5, 1000 Ljubljana, Slovenia

Iodination of enol acetates and 1,3-diones with N-iodosaccharin yielding the corresponding α-iodoketones and 2-iodo-1,3-diones is presented. Reactions are carried out at room temperature under neutral conditions and in short reaction times.

Abstract

Synth. Commun. 2003, 33, 2925

Trityl-Directed Regiospecific Synthesis of 2,3-Disubstituted Bioimidazoles

Pooja Chandana, Amit Nayyar, and Rahul Jain*

Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar, Punjab, India

We report an efficient trityl-directed regiospecific synthesis of 2,3-disubstituted-l-histdines and 2,3-disubstituted histamines starting from α-N-trifluoroacetyl-l-histidine methyl ester and α-N-trifluoroacetylhistamine respectively in five steps.