Catalytic Asymmetric Allylation Reactions. 3. Extension to Methallylstannane, Comparison of Procedures, and Observation of a Nonlinear Effect

Article abstract of DOI:10.1021/jo00076a005

Enantioselective additions of methallylstannanes to representative aldehydes with four chiral Lewis acid systems afford ee's of 84-99percent using 10 mol percent of catalyst.In one case, use of (R)-BINOL of 50percent ee gave product with 88percent ee.