Sulfur-containing Heterocycles Derived by Reaction of N-Thioacylamino Alcohols with Lawesson’s Reagent and Saponification of N-Thioacylamino Esters
作者:Takehiko Nishio、Hiroshi Sekiguchi
DOI:10.3987/com-02-s(m)9
日期:——
The treatment of 2-N-thioacylamino alcohols (1) with Lawesson's reagent [LR: 2,4-bis(p-methoxyphenyl)-1,3,2,4-dithiaphosphetane 2,4-disulfide] afforded the sulfur-containing heterocycles, 1,3-thiazolines (2) in moderate to good yields, exclusively. The saponification of N-thioacylamino esters (4), which were prepared by the thionation of N-acylamino esters (3) with LR, with K2CO3 gave 3,1-benezothiazines (5) and 3,1-benzoxazines (6).