Access to β-Hydroxyl Esters via Copper-Catalyzed Reformatsky Reaction of Ketones and Aldehydes
作者:Ren Shi Luo、Lu Ouyang、Jian Hua Liao、Yan Ping Xia
DOI:10.1055/s-0040-1707110
日期:2020.9
An efficient and simple Cu-catalyzed Reformatsky reaction of ketones and aldehydes has been accomplished with ethyl iodoacetate. Excellent yields of β-hydroxyl esters were achieved with a range of ketones and aldehydes, which varied from aromatic to aliphatic, unsaturated to saturated ketones and aldehydes. This practical and convenient transformation was conducted with inexpensive, readily available
Dimethylzinc-Mediated, Oxidatively Promoted Reformatsky Reaction of Ethyl Iodoacetate with Aldehydes and Ketones
作者:Pier Giorgio Cozzi、Alessandro Mignogna、Paola Vicennati
DOI:10.1002/adsc.200700572
日期:2008.5.5
A practical and general Reformatskyreaction, promoted by oxidants and mediated by dimethylzinc, is described. The reaction is fast and runs at 0 °C with aldehydes and ketones, under mild reaction conditions. Preliminary results obtained for the enantioselective version show that inexpensive chiral amino alcohols could be used in the challenging formation of enantioenriched quaternary stereogenic centers
A newmethod for the catalytic aldol reaction to ketones, using CuF.3PPh3.2EtOH complex as the catalyst and (EtO)3SiF as the additive, is described. The reaction can be applied to a wide range of ketones and trimethylsilyl enolates. On the basis of mechanistic studies, a working hypothesis for the catalytic cycle is proposed, in which the dynamic ligand exchange mediated by copper silicates produces
Reformatsky and Blaise reactions in flow as a tool for drug discovery. One pot diversity oriented synthesis of valuable intermediates and heterocycles
作者:L. Huck、M. Berton、A. de la Hoz、A. Díaz-Ortiz、J. Alcázar
DOI:10.1039/c6gc02619b
日期:——
The application of Reformatsky and Blaise reactions for the preparation of a diverse set of valuable intermediates and heterocycles in a one-pot protocol is described. To achieve this goal, a...
Indolinylmethanol catalyzed enantioselective Reformatsky reaction with ketones
作者:Ning Lin、Miao-Miao Chen、Ren-Shi Luo、Yan-Qiu Deng、Gui Lu
DOI:10.1016/j.tetasy.2010.11.004
日期:2010.12
A series of chiral indolinylmethanol ligands have been applied for the first time in the asymmetric Reformatskyreaction of an α-bromoester with ketones. In the presence of NiBr2 and zinc powder, up to 75% yield and 87% ee were obtained for a variety of aromatic and aliphatic ketones. The use of Ni(acac)2 resulted in 96% ee although the corresponding yield was low. This process provided a convenient