Direct Displacement of Alkoxy Groups of Vinylogous Esters by Grignard Reagents
作者:Anthony J. Brockway、Marcos González-López、James C. Fettinger、Jared T. Shaw
DOI:10.1021/jo102537n
日期:2011.5.6
The direct displacement of alkoxy groups from the β position of aromatic and unsaturated esters and ketones is described. The reaction is chemo- and regioselective, displaying wide substrate scope.
Mechanism of Alkoxy Groups Substitution by Grignard Reagents on Aromatic Rings and Experimental Verification of Theoretical Predictions of Anomalous Reactions
作者:Gonzalo Jiménez-Osés、Anthony J. Brockway、Jared T. Shaw、K. N. Houk
DOI:10.1021/ja4015937
日期:2013.5.1
The mechanism of direct displacement of alkoxy groups in vinylogous and aromatic esters by Grignard reagents, a reaction that is not observed with expectedly better tosyloxy leaving groups, is elucidated computationally. The mechanism of this reaction has been determined to proceed through the inner-sphere attack of nucleophilicalkylgroups from magnesium to the reacting carbons via a metalaoxetane