Reaction between 2,2′ -dithiodianiline and acetylenic ketones or esters. A new synthesis of 4<i>H</i>-1,4-benzothiazines
作者:Gaetano Liso、Giuseppe Trapani、Vincenza Berardi、Paolo Marchini
DOI:10.1002/jhet.5570170232
日期:1980.3
The title compounds (3a-c) together with the benzothiazolines (4b-c) were obtained by reaction between 2,2′ -dithiodianiline (1) and acetylenic ketone (2a) or esters (2b-c). A possible pathway involving the formation and subsequent cyclization to 3 of enamine intermediates A and/or B, is suggested.
通过2,2′-二硫代二苯胺(1)与炔属酮(2a)或酯(2b-c)之间的反应获得标题化合物(3a-c)与苯并噻唑啉(4b -c)。建议了一种可能的途径,该途径涉及烯胺中间体A和/或B的形成和随后的环化成3。