3-Trimethylsilylpropargylic alcohols 1, on treatment with amides 2 in the presence of catalytic amounts of cationic gold(III), underwent propargylic substitution followed by cycloisomerization, in which the key feature is the beta-cation-stabilizing effect of the silicon atom of 1.
Amberlite IR-120H as an efficient and versatile solid phase catalyst for nucleophilic substitution of propargylic alcohols
作者:Satheesh Gujarathi、Howard P. Hendrickson、Guangrong Zheng
DOI:10.1016/j.tetlet.2013.04.120
日期:2013.7
A highly efficient Amberlite IR-120H resin mediated nucleophilic substitution of the hydroxyl group of propargylic alcohols with a wide range of nucleophiles is reported. The reactions were achieved under very mild conditions in excellent yields. (c) 2013 Elsevier Ltd. All rights reserved.