RING-CHAIN TAUTOMERISM IN 1,3-THIAZOLIDINES

被引：73
|
作者：
FULOP, F [1 ]
MATTINEN, J [1 ]
PIHLAJA, K [1 ]
机构：
[1] UNIV TURKU,DEPT CHEM,SF-20500 TURKU 50,FINLAND
来源：
TETRAHEDRON | 1990年 / 46卷 / 18期
关键词：
D O I：
10.1016/S0040-4020(01)96019-3
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
NMR spectroscopy was applied to study ring-chain tautomeric equilibria in several substituted 1,3-thiazolidines. The system highly prefers the ring form and only in the case of 2-(2'-hydroxy,5'-bromophenyl)-l,3-benzothiazo-line (2d) 1H and 13C NMR spectra revealed a detectable amount of the openchain tautomer. The relative stability of the 1,3-thiazolidine ring was estimated to be more than 104 times higher than that of the 1,3-oxazolidine ring. © 1990.
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收藏
页码：6545 / 6552
页数：8
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