A regioselective addition of nucleophiles to monocyclic 1,2-thiazinylium perchlorate: a novel precursor of 6-substituted 1,2-thiazines
作者:Hiroshi Shimizu、Naoyuki Okada、Mitsuhiro Yoshimatsu
DOI:10.1016/s0040-4020(01)00908-5
日期:2001.10
The nucleophilic addition reactions of 4,5-diphenyl-1,2-thiazinylium perchlorate 1 regioselectively proceeded to give 6-alkoxy-3a-c and 6-alkyl-1,2-thiazines 3e-f, 4f, 3i-j in good to high yields. The Friedel-Crafts type reaction with arenes also afforded 6-aryl adducts 6a-c. (C) 2001 Elsevier Science Ltd. All rights reserved.