PMA-silica gel has been utilized to catalyze efficiently the propargylation of aromaticcompounds with arylpropargyl alcohols in the absence of solvent under environmentally benign conditions.
Indium(III) Bromide Catalyzed Rapid Propargylation of Heteroaromatic Systems by α-Aryl-Substituted Propargyl Alcohols
作者:J. Yadav、B. Reddy、K. Rao、G. Kumar
DOI:10.1055/s-2007-990797
日期:2007.10
pyrrole, and furan underwent smooth coupling with propargylic alcohols in the presence of 10 mol% of indium(III) bromide under mild conditions to furnish exclusively propargylated heterocycles in excellent yields and high regioselectivity. The use of indium(III) bromide makes this procedure simple, convenient, and practical. The hydroxygroups of the propargylic alcohols were simply replaced by the nucleophiles
Iodine-catalyzed C- and O-nucleophilic substitution reactions of aryl-propargyl methanols
作者:P. Srihari、Dinesh C. Bhunia、P. Sreedhar、S.S. Mandal、J. Shyam Sunder Reddy、J.S. Yadav
DOI:10.1016/j.tetlet.2007.09.123
日期:2007.11
Aryl propargylic methanols undergo C- and O-nucleophilic substitution reactions in the presence of a catalytic amount of iodine in short reaction times with good yields. (c) 2007 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.
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.