ArSiCl3 and Ar2SiCl2, believed to be unstable in aqueous media, reacted efficiently with alpha,beta-unsaturated ketones and esters in air and water (in the presence of sodium fluoride and a rhodium catalyst), giving good to excellent yields of the desired conjugateaddition products.
Rhodium-catalysed addition of organotrialkoxysilanes to α-substituted acrylic esters
作者:Jonathan D. Hargrave、Jennifer Herbert、Gerwyn Bish、Christopher G. Frost
DOI:10.1039/b606977k
日期:——
The cationic rhodium complex [Rh(cod)2][BF4] effectively catalyses the 1,4-addition of organotrialkoxysilanes to alpha-substituted acrylicesters. The reactions are promoted by heating in an oil-bath or more conveniently in a microwave reactor allowing rapid access to a useful range of functionalised products including 2-alkyl succinates and alpha-amino acid derivatives.
Novel Synthesis of α-Amino Acids via Catalysis in Air and Water
作者:Tai-Sheng Huang、Chao-Jun Li
DOI:10.1021/ol010079s
日期:2001.6.1
[GRAPHICS]A new method was developed for the synthesis of natural and unnatural amino acid derivatives via carbon-carbon bond formation in air and water and at ambient temperature.