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Abstract | Cited by

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.

Graphical abstract: Palladium–phosphinous acid-catalyzed Sonogashira cross-coupling reactions in water

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