A Facile Synthesis of 1-Phenylsulfonyl-3-substituted-2-cyanoindoles, 1-Phenylsulfonyl-2-methyl-3-cyanoindoles, and Bifunctional 1-Phenylsulfonylindoles - Jaisankar, Pichamuthu; Srinivasan, P C (Synthesis, 2006)