A dual platinum‐ and pyrrolidine‐catalyzed direct allylic alkylation of allylic alcohols with various activemethylenecompounds to produce products with high monoallylation selectivity was developed. The use of pyrrolidine and acetic acid was essential, not only for preventing undesirable side reactions, but also for obtaining high monoallylation selectivity.
Direct palladium/carboxylic acid-catalyzed C-allylation of cyclic 1,3-diones with allylic alcohols in water
作者:Kim-Hong Gan、Ciou-Jyu Jhong、Shyh-Chyun Yang
DOI:10.1016/j.tet.2007.11.082
日期:2008.2
The direct activation of C-O bonds in allylic alcohols in water as a suspension medium by palladium complexes has been accelerated by carrying out the reactions in the presence of a carboxylic acid. The palladium-catalyzed allylation of cyclic 1,3-diones using allylic alcohols directly gave the corresponding C-allylated products in good yields. (c) 2007 Elsevier Ltd. All rights reserved.