Visible-Light-Initiated Hydrooxygenation of Unactivated Alkenes─A Strategy for Anti-Markovnikov Hydrofunctionalization
作者:Linda Quach、Subhabrata Dutta、Philipp M. Pflüger、Frederik Sandfort、Peter Bellotti、Frank Glorius
DOI:10.1021/acscatal.1c05555
日期:2022.2.18
of unactivated alkenes is an indispensable mean in synthetic chemistry. Given that addition of electrophilic species into alkenes intrinsically follows the Markovnikov rule, a regioselectivity switch presents a major challenge. Herein, we present a visible-light-promoted strategy for the selective anti-Markovnikov hydrooxygenation of unactivated alkenes. Therefore, an innovative reagent was carefully
The Continuous Acid-Catalysed Etherification of Aliphatic Alcohols Using Stoichiometric Quantities of Dialkyl Carbonates
作者:Andrew J. Parrott、Richard A. Bourne、Peter N. Gooden、Han. S. Bevinakatti、Martyn Poliakoff、Derek J. Irvine
DOI:10.1021/op1002243
日期:2010.11.19
A range of methyl and ethyl ethers of aliphatic alcohols have been synthesized cleanly in high yield by reacting the corresponding alcohol with dimethyl carbonate or diethyl carbonate over the solid acid catalyst, gamma-alumina. The reaction could be conducted at ambient pressure without the need for the large excess of dialkyl carbonate as previously reported in tie literature. If the reaction was conducted at high pressure, the conversion of the starting alcohol was greatly reduced. However, high pressure CO2 can be used as the solvent without significant reduction in yield. This has implications for tandem reactions.
Khatuntsev; Zlotskii; Pastushenko, Journal of applied chemistry of the USSR, 1985, vol. 58, # 5 pt 2, p. 1077 - 1079