作者:W. G. Davies、E. W. Hardisty、T. P. Nevell、R. H. Peters
DOI:10.1039/j29700000998
日期:——
A number of mono- and di-vinyl sulphones and sulphonamides have been prepared and the kinetics of their reaction with alcohols in the presence of a basic catalyst have been studied. In a series of pure alcohols, the reaction is of the first order with respect to both vinyl compound and catalyst; its rate at first increases and then becomes practically constant on ascending the homologous series from
已经制备了许多单和二乙烯基砜和磺酰胺,并且已经研究了它们在碱性催化剂存在下与醇反应的动力学。在一系列的纯醇中,相对于乙烯基化合物和催化剂,反应均为一级反应。它的速率首先增加,然后随着从甲醇到正癸醇的同源序列的增加而变得几乎恒定。通过加入二恶烷可以提高与乙醇的反应速率。这些结果符合以下观点:反应机理在于向乙烯基化合物中添加亲核醇盐离子,然后使如此形成的中间碳负离子快速质子化。