Non-decarboxylative 1,3-dipolar cycloadditions of imines of α-amino acids as a route to proline derivatives.
作者:Moustafa F. Aly、Mansour I. Younes、Saoud A.M. Metwally
DOI:10.1016/s0040-4020(01)81114-5
日期:1994.3
alpha-Amino acids react with aryl aldehydes in the presence of N-substituted maleimides to yield stereospecific cycloadducts (3a,b) with dimethyl fumarate to give isometric mixtures of (4a-i) and (5a-i). The relatively low yield in the case of dimethyl fumarate is presumably due to the steric interaction between the dipolarophile and the substituents at both ends of the dipole.
Aly, Moustafa F.; Grigg, Ronald; Thianpatanagul, Sunit, Journal of the Chemical Society. Perkin transactions I, 1988, p. 949 - 956