Reactions of 1, 2??dihydro??4H??3, 1??benzothiazine??2, 4??dithiones (trithioisatoic anhydrides) with N??substituted benzylamines and trialkyl phosphites

M Takahashi, T Gunji, A Ichikawa

Index: Takahashi, Masahiko; Gunji, Tomoko; Ichikawa, Akiko Journal of Heterocyclic Chemistry, 2002 , vol. 39, # 5 p. 1029 - 1033

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Citation Number: 9

Abstract

Abstract 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 phosphites ...