Convenient synthesis of a new class of chiral hydroxymethyldihydrooxazole ligands and their application in asymmetric addition of diethylzinc to aromatic aldehydes
作者:Zhi-ting Li、Xin-sheng Li、Liang-chao Li、Dong-cheng Xu
DOI:10.1134/s1070428006040105
日期:2006.4
A number of chiral hydroxymethyl-substituted dihydrooxazoles were synthesized from D- or L-mandelic acid and amino alcohols. The chiral ligands thus obtained were tested as catalyst in the asymmetric addition of diethylzinc to aromatic aldehydes, and the structure-activity relationship was studied. The addition products were characterized by an enantiomeric excess of up to 91%.