Zeolite mediated protection of carbonyl groups

Abstract

Faujasites such as HY, CaY and MgY are employed as solid acid catalysts for the clean and less hazardous preparation of phenylhydrazone, 2,4-dinitrophenylhydrazone as well as 1,3-dithiane derivatives of carbonyl compounds. The reactions proceed very smoothly and the yields of the derivatives are excellent.

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