T. Hosaka et al., AN EFFICIENT PROTOCOL FOR THE SELECTIVE REDUCTION OF BENZENESULFONYLLACTAM TO BENZENESULFONYL CYCLIC AMINE, Tetrahedron letters, 38(20), 1997, pp. 3535-3538
The selective reduction of N-benzenesulfonylpiperidin-2-one to N-benze
nesulfonylpiperidine was accomplished through the use of NaBH4 with ei
ther ZrCl4 or SnCl4 and by silane-mediated two-step reductions. (C) 19
97 Elsevier Science Ltd.