Rhodium-Catalyzed Isomerization of α-Arylpropargyl Alcohols to Indanones: Involvement of an Unexpected Reaction Cascade
作者:Ryo Shintani、Kazuhiro Okamoto、Tamio Hayashi
DOI:10.1021/ja042582g
日期:2005.3.9
alkynes + aromatic aldehydes), this method provides a new way of constructing indanones with high efficiency. By the mechanistic investigations using deuterium-labeled substrates, it has also been demonstrated that the reaction goes through an unexpected cascade, with a 1,4-hydrogen shift being the turnover-limiting step of the catalytic cycle.
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;