Catalysis Letters, Vol.60, No.1-2, 71-75, 1999
Ring-opening reaction of 4,4,5,8-tetramethyl-1-oxaspiro[2.5]octane to 2,2,3,6-tetramethylcyclohexanecarbaldehyde over heterogeneous catalysts
The heterogeneously catalyzed ring-opening reaction of 4,4,5,8-tetramethyl-1-oxaspiro[2.5]octane (1) has been carried out in a fixed bed as well as in a batch reactor. In the presence of a silica catalyst yields up to 53% of the important fragrance intermediate 2,2,3,6-tetramethylcyclohexane carbaldehyde (2) could be achieved.