Patent ID: 8754259

Claim:
A process for preparing N-substituted menthanecarboxamide of general formula comprising a coupling reaction in the presence of a copper catalyst between a primary menthane carboxamide and an aryl halide of the general formula wherein R 1 , R 2 and R 3 may be the same or different and may each be hydrogen or one of R 1 , R 2 and R 3 may be a group selected from halogen, OH, hydroxy-C1-C4-alkyl, C1-C4-alkoxy, NO 2 , CN, cyano-C1-C4-alkyl, acetyl, SO 2 NH 2 , CHO, CO 2 H and C1-C4 alkyl carboxylate; two of R 1 , R 2 and R 3 may be H or C1-C4 alkyl and X is Cl, Br, I or mixtures thereof.