Patent ID: 7582804
Filing Date: 2009-09-01
Classification: C07B,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 promoted copper-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 1 , R 2 , R 3 and R 4 has, independently from each other, 1 to 8 carbon atoms and wherein the promoted copper-based catalyst comprises a silica support and wherein the promoter metal is chosen from cobalt or a Group 1 metal.