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 Lewisacid 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
The palladium catalyzed carboxytelomerization reaction of alcohols with butadiene allows for efficient and atom‐economical access to unsaturated alkyl nona‐3,8‐dienoate esters. The study focused on the nature of the catalyst (phosphine and acid) with ethanol. Commercially available triarylphosphines and carboxylicacids associated with a simple palladium precursor appear to be the best combination