N-Heterocyclic Carbene Ligands in Cobalt-Catalyzed Sequential Cyclization/Cross-Coupling Reactions of 6-Halo-1-hexene Derivatives with Grignard Reagents
[reaction: see text] N-Heterocyclic carbene/cobalt systems effectively catalyze sequential cyclization/cross-coupling reactions of 6-halo-1-hexene derivatives with trialkylsilylmethyl and 1-alkynyl Grignardreagents, which phosphine and amine ligands did not promote.
Silafunctional compounds in organic synthesis. 28. Conjugate addition of a hydroxymethyl anion synthon to α,β-enones
作者:Kohei Tamao、Neyoshi Ishida
DOI:10.1016/s0040-4039(01)81408-8
日期:1984.1
The title reaction has been achieved by a sequence of the copper-catalyzed conjugateaddition of the (allyldimethylsilyl)methyl Grignard reagent, fluorodeallylation and the H2O2-oxidation of the carbon-silicon bond therein.
通过依次进行(烯丙基二甲基甲硅烷基)甲基格氏试剂的铜催化共轭加成,氟代去烯丙基化和其中的碳-硅键的H 2 O 2-氧化来实现标题反应。
Cobalt-catalyzed sequential cyclization/cross-coupling reactions of 6-halo-1-hexene derivatives with Grignard reagents and their application to the synthesis of 1,3-diols
combination effectively catalyzes sequential cyclization/cross-coupling reactions of 6-halo-1-hexene derivatives with trialkylsilylmethyl, 1-alkynyl, and aryl Grignard reagents. The sequential cyclization/cross-coupling reactions are applied to the synthesis of 1,3-diols starting from siloxy-tethered 6-halo-1-hexene derivatives.
Regio- and Stereoselective Approach to 1,2-Di- and 1,1,2-Trisilylethenes by Cobalt-Mediated Reaction of Silyl-Substituted Dibromomethanes with Silylmethylmagnesium Reagents