作者:Fabio Morana、Andrea Basso、Marco Bella、Renata Riva、Luca Banfi
DOI:10.1002/adsc.201200140
日期:2012.8.13
malonates to in situ generated N-formylimines of aromatic aldehydes was achieved under phase-transfer catalysis using Cinchona alkaloids-derived quaternary ammonium salts. The resulting β-formamidomalonates have been efficiently converted into β-aryl-β-isocyano esters. Their utility in the multicomponent Ugi reaction with chiral cyclic imines has been demonstrated.
在使用
金鸡纳
生物碱衍生的季
铵盐的相转移催化下,
丙二酸酯向原位生成的芳族醛的N-甲
酰亚胺不对称加成反应。所得的β-甲酰胺基
甲酸酯已经有效地转化为β-芳基-β-异
氰基酯。已经证明了它们在与手性环状
亚胺的多组分Ugi反应中的效用。