Complete Control of the Chemoselectivity in Catalytic Carbene Transfer Reactions from Ethyl Diazoacetate: An <i>N</i>-Heterocyclic Carbene−Cu System That Suppresses Diazo Coupling
作者:Manuel R. Fructos、Tomás R. Belderrain、M. Carmen Nicasio、Steven P. Nolan、Harneet Kaur、M. Mar Díaz-Requejo、Pedro J. Pérez
DOI:10.1021/ja047284y
日期:2004.9.1
the transfer of the :CHCO2Et group from ethyl diazoacetate (EDA) to unsaturated and saturated substrates (olefins, amine, alcohols) with very high yields. In the absence of substrate, the complex 1 does not react with EDA to give the diazo coupling products (fumarate and maleate), a rare example in the field of metal-catalyzed diazocompounds decomposition.
Insertion of carbenes into OH bonds of alcohols catalysed by platinum complexes
作者:Raphaël Schils、François Simal、Albert Demonceau、Alfred F Noels、Igor L Eremenko、Aleksei A Sidorov、Sergei E Nefedov
DOI:10.1016/s0040-4039(98)01725-0
日期:1998.10
The addition of diazoesters to alcohols in the presence of a catalytic amount of platinum complexes provides the corresponding O-H insertion products in good to excellent yields. (C) 1998 Elsevier Science Ltd. All rights reserved.