N-Benzyldiisopropylamine 1 and S2Cl2 give the N-benzylbisdithiolothiazine 2, shown by X-ray crystallography to have the typically folded tricyclic structure; 2 is debenzylated by H2SO4 to give the title compound 4 which atypically has a rare near-planar 1,4-thiazine ring, gives a blue anion in solution and does not extrude sulfur thermally.
N-Benzyldiisopropylamine 1 和 S2Cl2 生成 N-苄基双二
硫代
噻嗪 2,X 射线晶体学显示其具有典型的折叠
三环结构;2 通过 H2SO4 去苄基,生成标题化合物 4,该化合物具有罕见的近平面 1,4-
噻嗪环,在溶液中生成蓝色阴离子,并且在热作用下不会挤出
硫。