Studies on the synthesis of amino acids V: Phase-transfer catalytic Michael additions of N-cyanomethyl and N-ethoxycarbonylmethyl imidates
SHI YAOZENG;SHI NONGYUAN;JIANG WEIPING;FAN FULONG;LU WANFANG;HU HONGWEN
Chin. J. Org. Chem. . 1989, (3): 254 -256 .