Vicinal Functionalization of Propiolate Esters via Catalytic Carbocupration: Stereoselective Formation of Substituted Vinyl Silanes
作者:Amanda J. Mueller Hendrix、Michael P. Jennings
DOI:10.1021/ol100854j
日期:2010.6.18
The vicinal functionalization of propiolate esters via a catalytic carbocupration−silicon group migration sequence has been investigated. We have observed that catalyst loadings as low as 5 mol % allow for good yields and excellent diastereoselectivities (>20:1) with a series of Grignard reagents for the synthesis of substituted E-vinyl silanes.
Diastereoselective Syntheses of (<i>E</i>)-α-Trialkylsilyl α,β-Unsaturated Esters, α-Silane-Substituted Conjugated Silyl Ketene Acetals, and α,γ-Substituted Allylsilanes
作者:David A. Johnson、Amanda J. Mueller Hendrix、Michael P. Jennings
DOI:10.1021/acs.joc.8b01209
日期:2018.9.7
functionalization of propiolate estersvia a catalytic carbocupration/silicon group migration sequence has been further investigated to include the syntheses of a wide variety of β-alkyl- and β-aryl-substituted (E)-α-silyl α,β-unsaturated esters. The ester substrates were transformed into their β,γ-unsaturated isomers by means of an LDA-mediated γ-deprotonation, extended silylketeneacetal formation, and final