Development of methods for the synthesis of chiral, highly functionalized 2-amino-4-aryl-4H-pyrans
作者:José L. Marco、Nazario Martín、Angeles Martínez-Grau、Carlos Seoane、Armando Albert、Félix H. Cano
DOI:10.1016/s0040-4020(01)87029-0
日期:1994.3
The development of new methods for the asymmetric synthesis of highly functionalized 2-amino-4-aryl-4H-pyrans is described. Two alternative synthetic routes: the 1,4-conjugate addition of chiral β-ketoesters 3 or the N-acetoacetyl sultam 11 to arylidenemalononitriles 6, and the Michael addition of malononitrile to enantiomerically pure α-acetylcinnamates 5, have been designed. Depending upon the chiral