Patent ID: 6900355
Filing Date: 2005-05-31
Classification: C07C

Abstract:
1. A process for preparing compounds of the formula in which R 1 and R 2 are, independently of one another, hydrocarbon radicals and A are substituents and m is an integer from 0 to 4 which defines the number of substituents A, which comprises a) hydrogenating a cyclohexylidenamine of the formula: in which n is zero or 1, R 1, R 2, A and m are as defined above, in the presence of a copper-containing catalyst and in the presence of a protic solvent; or b) reacting a ketone of the formula: in which R 2, A and m are as defined above, with a compound which introduces the group R 1 —N→(O) n , hydrogenating the imine or nitrone (II) obtainable as an intermediate in the presence of a copper-containing catalyst and in the presence of a protic solvent and isolating the cis compound (I).