Desymmetrization of 2,2′,6,6′-tetramethoxybiphenyl by regioselective sulfenylation reaction
摘要:
A practical regioselective sulfenylation reaction of the achiral title compound 1 provides desymmetrization and access to C-symmetric sulphur derivatives. Resolution of 2,2",6,6'-tetramethoxy-3,3'-dimercapto-1,1'-biphenyl 7 was achieved by conversion to the corresponding dithiocarbonate diastereomers. The absolute configuration of (aR)-(-)-7 and (aS)-(+)-7 was assigned unambiguously. (C) 2002 Elsevier Science Ltd. All rights reserved.
Desymmetrization of 2,2′,6,6′-tetramethoxybiphenyl by regioselective sulfenylation reaction
摘要:
A practical regioselective sulfenylation reaction of the achiral title compound 1 provides desymmetrization and access to C-symmetric sulphur derivatives. Resolution of 2,2",6,6'-tetramethoxy-3,3'-dimercapto-1,1'-biphenyl 7 was achieved by conversion to the corresponding dithiocarbonate diastereomers. The absolute configuration of (aR)-(-)-7 and (aS)-(+)-7 was assigned unambiguously. (C) 2002 Elsevier Science Ltd. All rights reserved.