A New Strategy for the Synthesis of Optically Pure β-Fluoroalkyl β-Amino Acid Derivatives
作者:Santos Fustero、Carlos del Pozo、Silvia Catalán、José Alemán、Alejandro Parra、Vanesa Marcos、José Luis García Ruano
DOI:10.1021/ol802733t
日期:2009.2.5
The first general approach for the diastereoselective formation of a variety of opticallypure anti-β-fluoroalkyl β-amino acid derivatives is described. The process relies on the stereocontrolled reaction, mediated by a remote sulfoxide, of fluorinated imines with sulfinylated benzyl carbanions, which are used as synthetic equivalents of chiral ester enolates.
Asymmetric construction of fluorinated imidazolidines via Cu(i)-catalyzed exo′-selective 1,3-dipolar cycloaddition of azomethine ylides with fluorinated imines
作者:Qing-Hua Li、Liang Wei、Xuan Chen、Chun-Jiang Wang
DOI:10.1039/c3cc43025a
日期:——
Expedient access to optically active fluorinated 2,4-trans-imidazolidines was successfully developed via Cu(I)-catalyzed exo'-selective 1,3-DC of azomethine ylides with fluorinated imines.