Nakamura S, Kato T, Nishimura H, Toru T. Enantioselective reactions of ?-lithiated allyl aryl sulfides using chiral bis(oxazoline)s.
Chirality 2004;
16:86-9. [PMID:
14712471 DOI:
10.1002/chir.10309]
[Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The reaction of alpha-lithio allyl aryl sulfides, generated by treatment with n-BuLi and chiral ligands at -78 degrees C, with ketones was examined. The alpha-addition products were formed in preference to the gamma-addition products. The enantioselectivity of the alpha-addition products varied depending on the chiral ligand, and bis(oxazoline)-(t)Bu showed the highest enantioselectivity. Chirality 16:86-89, 2004.
Collapse