An Al(OTf)3-catalyzed environmentally benign process for the propargylation of indoles
摘要:
Al(OTf)(3) catalyzed the alkylation of indoles using secondary/tertiary propargylic alcohols to produce 3-propargylated indoles in excellent yields with high selectivity. The reactions were performed in air with commercial grade solvents, and water was the only side product of the process. The catalyst was recovered after completion of the reaction and re-used with minimum loss of activity over three cycles. (c) 2012 Elsevier Ltd. All rights reserved.
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.
DDQ-mediated oxidative cross-coupling between propargylic sp3 and indoles sp2 carbons
作者:G.L.V. Damu、J. Jon Paul Selvam、C. Venkata Rao、Y. Venkateswarlu
DOI:10.1016/j.tetlet.2009.08.075
日期:2009.11
DDQ-catalyzed oxidative cross-coupling reaction between indoles and propargyl compounds is reported for the first time. The reaction involves direct carbon-carbon bond formation between sp(2) carbons of indoles and sp(3) carbons of propargylates to yield the corresponding propargyl indoles in good yields with high selectivity. (C) 2009 Elsevier Ltd. All rights reserved.
An Al(OTf)3-catalyzed environmentally benign process for the propargylation of indoles
Al(OTf)(3) catalyzed the alkylation of indoles using secondary/tertiary propargylic alcohols to produce 3-propargylated indoles in excellent yields with high selectivity. The reactions were performed in air with commercial grade solvents, and water was the only side product of the process. The catalyst was recovered after completion of the reaction and re-used with minimum loss of activity over three cycles. (c) 2012 Elsevier Ltd. All rights reserved.