Copper-promoted enantioselective Reformatsky-type reaction with ketones
作者:Fides Benfatti、Pier Giorgio Cozzi
DOI:10.1016/j.tetasy.2010.04.058
日期:2010.6
Controlled living polymerization of a broad range of monomers is a radical process known as ATRP (atom transfer radical polymerization) and is mediated by a variety of metals. A complex of copper has been found to be the most efficient catalyst, with a copper(I)/copper(II) catalytic cycle. The radical, enantioselective catalytic Reformatsky reaction mediated by Me2Zn can be efficiently promoted by copper(I) complexes avoiding the use of other promoters such as air and oxidant, giving more reproducible and affordable conditions. The CuCN-mediated enantioselective addition of ethyliodoacetate to functionalized ketones is described in this paper. (C) 2010 Elsevier Ltd. All rights reserved.
A Catalytic, Me2Zn-Mediated, Enantioselective Reformatsky Reaction With Ketones
作者:Pier Giorgio Cozzi
DOI:10.1002/anie.200504239
日期:2006.4.28
Julia,S. et al., Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1961, vol. 253, p. 678 - 680
作者:Julia,S. et al.
DOI:——
日期:——
Synthesis of β-peroxy-lactones using 30% H2O2
作者:Chandan Singh、Naveen Chandra Srivastav、Nisha Srivastava、Sunil K. Puri
DOI:10.1016/j.tetlet.2005.02.158
日期:2005.4
Cyclopropyl carbinols la-e react with H2O2 in the presence of concd H2SO4 at 0-5 degrees C to furnish the corresponding hydroperoxides 2a-e in 45-82% yields. This efficient trapping of cyclopropylmethyl cations by the hydroperoxy group has been exploited to prepare compounds 14-23, a new series of cyclopropyl substituted beta-peroxy-lactones. (c) 2005 Elsevier Ltd. All rights reserved.
CYCLOPROPANES. XIII.<sup>1</sup> 1-ACETYL-2-NITRO-3-PHENYLCYCLO-PROPANE AND ITS REACTION WITH SODIUM METHOXIDE