Momiyama N, Torii H, Saito S, Yamamoto H. O-nitroso aldol synthesis: Catalytic enantioselective route to alpha-aminooxy carbonyl compounds via enamine intermediate.
Proc Natl Acad Sci U S A 2004;
101:5374-8. [PMID:
15067138 PMCID:
PMC397388 DOI:
10.1073/pnas.0307785101]
[Citation(s) in RCA: 154] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2003] [Indexed: 11/18/2022] Open
Abstract
The approach using pyrrolidine enamine as substrate has been studied for this synthesis, and an important catalyst structural feature has been developed. After survey of pyrrolidine-based Brønsted acid catalyst, tetrazole catalyst (3f) was found to be optimal in synthesis of aminooxy carbonyl compounds in high yields, with complete enantioselectivity not only for aldehydes but also for ketones.
Collapse