Lewis acid catalysis of the ene addition of chloral and bromal to olefins; product studies
作者:Jill P. Benner、G. Bryon Gill、Stephen J. Parrott、Brian Wallace
DOI:10.1039/p19840000291
日期:——
The addition of chloral and bromal to a variety of alkyl-substituted alkenes has been investigated. The effect on the reaction of varying the Lewis acid catalyst and the structure of the substrate have been studied. Anhydrous AlCl3 was found to be the most effective catalyst, and ene-type adducts were the major products in most cases. Side reactions were observed with the less reactive systems leading
已经研究了向各种烷基取代的烯烃中添加氯醛和溴代醛的方法。研究了路易斯酸催化剂的变化对反应的影响以及底物的结构。发现无水AlCl 3是最有效的催化剂,并且在大多数情况下,烯类加合物是主要产物。观察到副反应与反应性较低的系统不同,导致形成三卤代酮,氢卤化的烯加合物和环状醚。在某些情况下,建立了优化烯加合物收率的条件。三卤代酮副产物可通过格利雅型反应方便地除去。