Reactions of 1,2‐dihydro‐4
<i>H</i>
‐3,1‐benzothiazine‐2,4‐dithiones (trithioisatoic anhydrides) with
<i>N</i>
‐substituted benzylamines and trialkyl phosphites
作者:Masahiko Takahashi、Tomoko Gunji、Akiko Ichikawa
DOI:10.1002/jhet.5570390527
日期:2002.9
Reactions of 1,2-dihydro-4H-3,1-benzothiazine-2,4-dithiones (trithioisatoic anhydrides) 3 with N-substi-tuted benzylamines 9 gave 1,2-dihydroquinazoline-4-thiones 10, o-thioureidodithiobenzoic acid 11, o-aminothiobenzamides 12, 2-amino-3,1-benzothiazine-4-thiones 13, or quinazoline-2,4-dithiones 14, depending on the kinds of amine and the reaction solvent. On the other hand, reaction of 3 with trialkyl
1,2-二氢-4 H -3,1-苯并噻嗪-2,4-二硫酮(三硫代脲酸酐)3与N-取代的苄胺9的反应得到1,2-二氢喹唑啉-4-硫酮10,邻硫脲二硫代苯甲酸酯酸11,直径: -aminothiobenzamides 12,2-氨基-3,1-苯并噻嗪-4-硫酮13,或喹唑啉-2,4- dithiones 14,这取决于种胺和反应溶剂。另一方面,3与亚磷酸三烷基酯的反应得到二烷基(1,2-二氢-2-thioxo-4 H -3,1-苯并噻嗪-4-基)膦酸酯18。