Chiral iminopyridines obtained by reaction between a variety of chiral amines and pyridyl aldehydes or ketones were assessed as catalysts in the enantioselectiveHenryreaction between nitromethane and 2-methoxybenzaldehyde in the presence of copper(II) acetate. 1-(2-Methoxyphenyl)-2-nitroethanol was obtained in moderate yields and good enantioselectivities (up to 82% ee) under straightforward experimental
Synthesis and application of new iminopyridine ligands in the enantioselective palladium-catalyzed allylic alkylation
作者:Maurizio Solinas、Barbara Sechi、Giorgio Chelucci、Salvatore Baldino、José R. Pedro、Gonzalo Blay
DOI:10.1016/j.molcata.2014.01.006
日期:2014.4
A variety of iminopyridines were obtained by condensation of chiral amines with pyridine-2-carboxaldehyde and quinoline-8-carbaldehyde, or of aminoalkylpyridine derivatives with chiral ketones. These ligands were assessed in the enantioselective palladium catalyzed allylic substitution of 1,3-diphenylprop-2-enyl acetate with dimethyl malonate affording the product dimethyl 1,3-diphenylprop-2-enylmalonate