Triethylborane promotes the Pd-catalyzed selective C-diallylation of o-hydroxyacetophenone and C-monoallylation of o-hydroxypropiophenone with a variety of ally alcohols. The reaction proceeds smoothly at 25-50 degreesC and provides the allylation products in excellent yields, (C) 2001 Elsevier Science Ltd. All rights reserved.
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.