作者:Yoichi Taguchi、Koshin Yanagiya、Isao Shibuya、Yasuo Suhara
DOI:10.1246/bcsj.60.727
日期:1987.2
The reaction of 2,2-dimethylthiirane with carbon disulfide in the presence of triethylamine was accelerated under high pressure to give 4,4-dimethyl-1,3-dithiolane-2-thione nearly quantitatively. The activation volume of this reaction at 40 °C was estimated to be −41 ml mol−1. The rate of the reaction was proportional to the amount of triethylamine when a limited amount of triethylamine was used. The reaction of 2-methylthiirane, 2-hexylthiirane, 1,2-epithiocyclohexane, and 2-phenylthiirane with carbon disulfide gave the corresponding 1,3-dithiolane-2-thione derivatives in good yields. 2-Chloromethylthiirane was less reactive to carbon disulfide than other thiiranes under high pressure. Tertiary amines such as N,N-dimethylethylamine, pyridine, and N-methylmorpholine were good catalysts of the reaction.
在三乙胺的存在下,2,2-二甲基硫杂环丙烷与二硫化碳在高压下反应,几乎定量地得到4,4-二甲基-1,3-二硫杂环戊烷-2-硫酮。在40°C下,该反应的活化体积估计为-41毫升摩尔-1。当使用有限量的三乙胺时,反应速率与三乙胺的量成正比。2-甲基硫杂环丙烷、2-己基硫杂环丙烷、1,2-环己硫杂环丙烷和2-苯基硫杂环丙烷与二硫化碳反应,以良好产率得到相应的1,3-二硫杂环戊烷-2-硫酮衍生物。2-氯甲基硫杂环丙烷在高压下对二硫化碳的反应性低于其他硫杂环丙烷。叔胺如N,N-二甲基乙胺、吡啶和N-甲基吗啉是该反应的良好催化剂。