Branch-Selective Intermolecular Hydroacylation: Hydrogen-Mediated Coupling of Anhydrides to Styrenes and Activated Olefins
作者:Young-Taek Hong、Andriy Barchuk、Michael J. Krische
DOI:10.1002/anie.200602377
日期:2006.10.20
One-carbon homologation of unsymmetrical ketones through magnesium β-oxido carbenoid rearrangement and trapping the enolate intermediates with electrophiles
A procedure for one-carbon homologation of unsymmetricalketones, including one-carbon ring-expansion of 2-substituted cyclohexanones, through magnesium β-oxido carbenoid rearrangement as the key reaction is described. Addition of the α-sulfinyl carbanion of 1-chloroethyl p-tolyl sulfoxide to an unsymmetricalketone gave two diastereomers as adducts in good yields. The adducts were treated with a base