FORMIC ACID REDUCTION XXV. A SELECTIVE REDUCTION OF CARBON–CARBON DOUBLE BONDS CONJUGATED WITH NITRO, CYANO, OR SULFONYL GROUP

Abstract
It has been found that the carbon–carbon double bonds conjugated with nitro, cyano, or sulfonyl group were selectively reduced by heating with the azeotrope, composed of formic acid and triethylamine, in N,N-dimethylformamide.