Regioselective Oxyalkylation of Vinylarenes Catalyzed by Diatomite-Supported Manganese Oxide Nanoparticles
摘要:
A regioselective oxyalkylation reaction of vinylarenes with cyclic ethers was developed under the catalysis of a new heterogeneous catalyst, the diatomite-supported Mn3O4 nanoparticles (SMONP-1). The use of this heterogeneous catalyst provided a novel approach for the synthesis of alpha-carbonyled beta-alkylated aryl derivatives via a sp(3) C-H bond functionalization under mild aerobic conditions.
First Reference to the Alkoxymetallation of Diisobutylaluminium and Bromomagnesium-2-vinyloxy Ethoxide to the Corresponding (1,3-Dioxolan-2-yl)methyl Organometallics
作者:Peter Maier、Hartmut Redlich
DOI:10.1055/s-2000-6480
日期:2000.2
Diisobutylaluminium and bromomagnesium-2-vinyloxy-ethoxide add at carbonyl compounds in the manner of (1,3-dioxolan-2-yl)methyl organometallics, giving the carbon-carbon addition products. It is assumed that the aluminium and magnesium compounds of 2-vinyloxy-ethoxide are in equilibrium with the corresponding (1,3-dioxolan-2-yl)methide.