Synlett 2005(1): 155-157  
DOI: 10.1055/s-2004-835666
LETTER
© Georg Thieme Verlag Stuttgart · New York

A Facile Synthesis of Chroman-4-ones and 2,3-Dihydroquinolin-4-ones with Quaternary Carbon Using Intramolecular Stetter Reaction Catalyzed by Thiazolium Salt

Taiju Nakamuraa, Osamu Harab, Tsutomu Tamuraa, Kazuishi Makinoa, Yasumasa Hamada*a
a Graduate School of Pharmaceutical Sciences, Chiba University, Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
b Faculty of Pharmacy, Meijo University, 150 Yagotoyama, Tempaku-ku, Nagoya 460-8503, Japan
Fax: +81(43)2902987; e-Mail: hamada@athenaeum.p.chiba-u.ac.jp;
Further Information

Publication History

Received 24 September 2004
Publication Date:
29 November 2004 (online)

Abstract

Chroman-4-ones and 2,3-dihydroquinolin-4-ones with quaternary carbon were efficiently synthesized by intramolecular Stetter reaction catalyzed by thiazolium salts.