A New Ready, High-Yielding, General Procedure for Acetalization of Carbonyl Compounds
作者:Romualdo Caputo、Carla Ferreri、Giovanni Palumbo
DOI:10.1055/s-1987-27955
日期:——
Carbonyl compounds are smoothly and rapidly acetalized by treatment with alcohols, in anhydrous acetonitrile, in the presence of polystyryl diphenyl phosphine - iodine complex as catalyst. Open and cyclic acetals, including 1,3-dioxolanes, 1,3-oxathiolanes, and 1,3-dithiolanes, of miscellaneous aldehydes and ketones have been successfully prepared in this way. The isolation of the product is very easily performed, by simple filtration of the polymer-linked phosphine oxide which is formed in the reaction.
通过使用醇类、无水乙腈中,在聚苯乙烯二苯基膦-碘复合物作为催化剂的条件下,羰基化合物可以顺利且快速地进行缩醛化反应。多种醛和酮的开链型和环状缩醛,包括1,3-二氧戊环、1,3-氧硫环戊烷和1,3-二硫环戊烷,都已成功通过这种方式制备。产品很容易通过简单过滤反应中形成的聚合物连接的磷氧化物来分离。