Palladium--phosphinous acid-catalyzed Sonogashira cross-coupling reactions in water.

Org Biomol Chem

Department of Chemistry, Georgetown University, Washington, DC 20057, USA.

Published: August 2004

A palladium--phosphinous acid-catalyzed Sonogashira cross-coupling reaction that proceeds in water under air atmosphere in the absence of organic co-solvents has been developed. Disubstituted alkynes have been prepared in up to 91% yield by POPd-catalyzed coupling of various aryl halides including chlorides in the presence of tetrabutylammonium bromide and pyrrolidine or NaOH.

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Source
http://dx.doi.org/10.1039/b407773cDOI Listing

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