Sulfur Nitrides in Organic Chemistry. 18. Preparation and Reduction of Benzo[1,2-<i>c</i>:3,4-<i>c</i>′:5,6-<i>c</i>″]tris- and Benzo[1,2-<i>c</i>:3,4-<i>c</i>′]bis[1,2,5]thiadiazole. A Convenient Route to Benzenehexamine and 1,2,3,4-Benzenetetramine
作者:Shuntaro Mataka、Hisao Eguchi、Kazufumi Takahashi、Taizo Hatta、Masashi Tashiro
DOI:10.1246/bcsj.62.3127
日期:1989.10
Benzotris- (3) and benzobis[1,2,5]thiadiazole (4) were prepared in a moderate yield, respectively, by the reaction of tetrasulfur tetranitride (5) with halocatechols (6) and -resorcinols (7). The reduction of 3 and 4 with Sn powder in a mixture of concentrated hydrochloric acid and dioxane gave benzenehexamine (1) and 1,2,3,4-benzenetetramine (2a) and its 5-methyl derivative (2b) in good yields, as
通过四氮化四硫 (5) 与卤代儿茶酚 (6) 和间苯二酚 (7) 的反应,分别以中等产率制备苯并三- (3) 和苯并双 [1,2,5] 噻二唑 (4)。在浓盐酸和二恶烷的混合物中用锡粉还原 3 和 4 得到苯六胺 (1) 和 1,2,3,4-苯四胺 (2a) 及其 5-甲基衍生物 (2b),收率良好,如分别是稳定的三盐酸盐 (1·3HCl) 和二盐酸盐 (2·2HCl)。