Enantioselective synthesis of synthetically significant (α‐hydroxyallyl)silanes, (α‐hydroxyaryl)silanes, and (α‐hydroxyalkyl)silanes is reported. The present copper‐catalyzed 1,2‐selective hydroborylation of acylsilanes affords the aforementioned products in high yields and with high enantiomeric excesses. This robust and scalable additive‐free catalytic system relies on the use of low copper(II) acetate
Synthesis of α,β-Unsaturated Acylsilanes via Perrhenate-Catalyzed Meyer–Schuster Rearrangement of 1-Silylalkyn-3-ols
作者:Andrei Nikolaev、Arturo Orellana
DOI:10.1021/acs.orglett.5b02909
日期:2015.12.4
via the perrhenate-catalyzed Meyer–Schuster rearrangement of 1-silylalkyn-3-ols. Propargylic alcohols derived from TES-acetylene and substituted benzaldehydes can be converted to acylsilanes using a combination of p-TSA·H2O and n-Bu4N·ReO4, or Ph3SiOReO3 in good yields. Some propargylic alcohols derived from ketones, as well as aliphatic and unsaturated aldehydes, can also be converted to acylsilanes;