Patent ID: 6114587
Filing Date: 2000-09-05
Classification: B01J,C07C

Abstract:
A process for the preparation of .alpha.-alkyl cinnamaldehydes, the process comprising a first step of acetalization of an n-alkyl aldehyde by direct reaction of the aldehyde with an alcohol or transacetalization with trialkyl orthoformate for obtaining n-alkyladehyde acetal, and a second step wherein the acetal and benzaldehyde or a substituted benzaldehyde, are subjected to condensation using an acid catalyst in the absence of a basic catalyst, wherein the acid catalyst is an acid form of a molecular sieve having a pore distribution of 6 to 100 .ANG. selected from the group consisting of mesoporous molecular sieves, microporous molecular sieves and molecular sieves having micropores and mesopores.