SELECTIVE HYDROGENATION OF NITRO GROUPS ON NITROAROMATIC ACETYLENES USING AN UNSUPPORTED COBALT POLYSULFIDE CATALYST

摘要

SELECTIVE HYDROGENATION OFNITRO GROUPS ON NITROAROMATIC ACETYLENESUSING AN UNSUPPORTED COBALT POLYSULFIDE CATALYSTAbstractAromatic nitroacetylene compounds wherein boththe nitro and acetylene groups are directly connected toaromatic ring carbon atoms are hydrogenated at high conversionlevels to selectively reduce the nitro function using anunsupported cobalt polysulfide catalyst. Of particularinterest is the preparation of aminophenylacetylenes fromnitrophenylacetylene.