Reactions of acetylenes, possessing bulky alkyl substituents, with S2Cl2. Unexpected formation of α-oxothioketones, thiirene 1-oxides, and 1,2-dithietes
作者:Juzo Nakayama、Kenta Takahashi、Toshiaki Watanabe、Yoshiaki Sugihara、Akihiko Ishii
DOI:10.1016/s0040-4039(00)01475-1
日期:2000.10
The reaction of di-t-butylacetylene with S2Cl2, followed by purification with silica-gel column chromatography, gave 2,2,5,5-tetramethyl-4-oxo-3-hexanethione (4a) (37%) and 2,3-di-t-butylthiirene 1-oxide (5a) (10%), which were formed by hydrolysis of the initial product, 2,3-di-t-butyl-2,3-dichloroepisulfide (3a). The same work-up of the reaction mixture of di(1-adamantyl)acetylene with S2Cl2 provided
二叔丁基乙炔与S 2 Cl 2的反应,然后用硅胶柱色谱纯化,得到2,2,5,5-四甲基-4-氧代-3-己硫酮(4a)(37%)和2,3-二吨-butylthiirene 1-氧化物(5A)(10%),这是由初始产品的水解,2,3-二-形成吨丁基-2,3- dichloroepisulfide(3A)。对二(1-金刚烷基)乙炔与S 2 Cl 2的反应混合物进行相同的处理后,得到了2-氧代乙硫酮(4b)(4–33%),噻吩1-氧化物(5b)(8–27%)和1,2-二硫(9b)(3–21%)。2,2,5,5,6,6,9,9-八甲基-3,7-癸二炔(1c)与S 2 Cl 2的反应提供了4 H,5 H -thiepin(12)作为唯一产物收率达99%。