Raffier L, Gutierrez O, Stanton GR, Kozlowski MC, Walsh PJ. Alkenes as Chelating Groups in Diastereoselective Additions of Organometallics to Ketones.
Organometallics 2014;
33:5371-5377. [PMID:
25328269 PMCID:
PMC4195513 DOI:
10.1021/om5007006]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Indexed: 11/30/2022]
Abstract
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Alkenes have been discovered to be
chelating groups to Zn(II),
enforcing highly stereoselective additions of organozincs to β,γ-unsaturated
ketones. 1H NMR studies and DFT calculations provide support
for this surprising chelation mode. The results expand the range of
coordinating groups for chelation-controlled carbonyl additions from
heteroatom Lewis bases to simple C–C double bonds, broadening
the 60 year old paradigm.
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