Hodgson DM, Kloesges J. Lithiation-electrophilic substitution of N-thiopivaloylazetidine.
Angew Chem Int Ed Engl 2010;
49:2900-3. [PMID:
20235261 DOI:
10.1002/anie.201000058]
[Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Indexed: 11/10/2022]
Abstract
The fourth protocol: the rarely studied N-thiopivaloyl group plays a crucial role in mediating efficient α lithiation and incorporation of diverse electrophiles onto an azetidine ring; in the presence of chiral ligands, this chemistry also provides the first example of an enantioselective electrophilic substitution on a four-membered ring.
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