Tri(hetero) substituted Carbonium Ions. VI. An Anomalous Reaction of 2-Methylthio-1,3-dithiolanylium Ion with<i>N</i>,<i>N</i>-Dimethyldithiocarbamate Anion
作者:Takeshi Nakai、Makoto Okawara
DOI:10.1246/bcsj.43.3882
日期:1970.12
not be ascribed to the attack of −SN on the normal product (IV). The ambident reactivity of cation III has been compared with that of closely related cations, tris(methylthio)carbonium ion and 2-methylamino-1,3-dithiolanylium ion (Ia). It was also found that the reaction of Ia with ethylthioxanthate anion (−SS′) afforded the S′-ethyl analog of IV (normal) together with a small amount of abnormal V. The
已经研究了 2-甲硫基-1,3-二硫基鎓离子 (III) 与 N,N-二甲基二硫代氨基甲酸盐阴离子 (-SN) 的反应,以证明阳离子 III 的环境特性。发现(i)反应得到S-β-(N,N-二甲基二硫代氨基甲酰基)乙基-S'-甲基三硫代碳酸酯(IV;正常)和亚乙基双(N,N-二甲基二硫代氨基甲酸酯)(V;异常);(ii) 在反应中形成甲基硫代黄原酸阴离子 (-SS);(iii) 异常产物(V)的形成更有利,这不能归因于-SN对正常产物(IV)的攻击。已将阳离子 III 的环境反应性与密切相关的阳离子、三(甲硫基)碳正离子和 2-甲氨基-1,3-二硫基烷鎓离子 (Ia) 的反应性进行了比较。