10-Camphorsulfonic acid ((±)-CSA) catalyzed facile one-pot synthesis of a new class of 2,5-disubstituted 1,3,4-oxadiazoles
2014
A convenient and efficient one-pot synthesis of 2,5-disubstituted-1,3,4-oxadizoles is described. Various carboxylic acid hydrazides reacted efficiently with different carboxylic acid chlorides and 10-camphorsulfonic acid. This methodology was successfully applied to the synthesis of a series of 2H-chromene substituted 1,3,4-oxadiazole derivatives in good to high yields.
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