Studies on the chemistry of O,N- and S,N-containing heterocycles.<b>4</b>. Investigations on the nucleophilic substitution of activated 1,5-benzothiazepines
作者:Herbert Bartsch、Thomas Erker
DOI:10.1002/jhet.5570250525
日期:1988.9
The reaction of the activated 1,5-benzothiazepine 1a with various amines is studied. In contrast to the phenylsubstituted derivative 1b no ring contraction but nucleophilic substitution is observed. Two novel ring systems8 and 9 are obtained by nitrosation of 3g and by reaction of 1a with anthranilic acid, respectively.