Methyl 2-(4-chlorophenyl)-4,4-dimethylcyclohex-1-ene-1-carboxylate is an intermediate in preparation of N-(phenylsulfonyl)benzamides and N-(3-pyridylsulfonyl)benzamides as anti-apoptotic Bcl 2 protein inhibitors and apoptosis-inducing agents for treatment of cancer, immune diseases, and autoimmune diseases.