期刊
ORGANIC LETTERS
卷 10, 期 19, 页码 4335-4337出版社
AMER CHEMICAL SOC
DOI: 10.1021/ol8019082
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资金
- Ministerio de Educacion y Ciencia (MEC) [CTQ2006-01121]
- UAM/Consejeria de Educacion de la Comunidad Autonoma de Madrid [CCG07-UAM/PPQ-1799]
Both cyclic and acyclic silyl dienol ethers participate efficiently in the asymmetric vinylogous Mannich reaction of N-2-thienylsulfonylimines catalyzed by copper(I) complexes of Fesulphos ligands. This procedure displays wide imine and nucleophile versatility, high enantiocontrol, and complete gamma-regioselectivity in most cases examined. The mild sulfonamide deprotection allows the resulting products to be readily transformed into optically active delta-lactams or 5-hydroxy-2-piperidone derivatives,
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