作者:Thierry Besson、Kumaraswamy Emayan、Charles W. Rees
DOI:10.1039/c39950001419
日期:——
Anthranilic acid and 4,5-dichloro-1,2,3-dithiazolium chloride 1 give the delicate dithiazoloimino carboxylic acid 8 which on mild thermolysis gives 2-cyano-3,1-benzoxazin-4-one 6 and with triphenylphosphine gives 2-cyano-3,1-benzothiazin-4-one 7, both quantitatively; in general N-aryliminodithiazoles 2 with triphenylphosphine give the corresponding cyanothioformanilides 3, providing a route to these compounds from anilines in two mild steps.
氨基苯甲酸和4,5-二氯-1,2,3-二噻唑鎓盐1反应生成精细的二噻唑亚氨基羧酸8,该化合物在温和热解后生成2-氰基-3,1-苯并噁唑啉-4-酮6,与三苯基膦反应生成2-氰基-3,1-苯并噻唑啉-4-酮7,均为定量产物;一般来说,N-芳基亚氨基二噻唑类化合物2与三苯基膦反应生成相应的氰基噻唑酰胺3,为从苯胺合成这些化合物提供了两步温和反应的途径。