Patent ID: 7521583
Filing Date: 2009-04-21
Classification: C07C

Abstract:
1. A process for producing a 2,2,4,4-tetraalkylcyclobutane-1,3-diol of Formula II, comprising contacting a 2,2,4,4-tetraalkylcyclobutane-1,3-dione with hydrogen in the presence of a cobalt-based catalyst under conditions of temperature and pressure sufficient to form a 2,2,4,4-tetraalkylcyclobutane-1,3-diol, wherein each of the alkyl radicals R wherein the cis/trans molar ratio of the 2,2,4,4-tetraalkylcyclobutane-1,3-diol is from 0.4 to 0.8; wherein the cobalt-based catalyst consists essentially of cobalt as the catalytic metal; wherein the catalyst comprises a support of silica or alumina; and wherein the selectivity is greater than about 65%.