Novel thiazolidine derivatives as chiral catalysts in the enantioselective addition of diethylzinc to aldehydes
作者:Qinglin Meng、Yuelan Li、Yan He、Yedi Guan
DOI:10.1016/s0957-4166(00)00391-8
日期:2000.11
New chiral thiazolidine derivatives were synthesized conveniently from natural l-cysteine and showed good enantioselectivity (up to 90% ee) in the addition of diethylzinc to aldehydes. The catalytic efficiency of the thiazolidine derivatives is influenced by the different structures of the thiazolidine rings and the bulkiness of R moiety in the ester groups.
新的手性噻唑烷衍生物可方便地从天然L-半胱氨酸合成,并且在将二乙基锌添加到醛中后显示出良好的对映选择性(最高90%ee)。噻唑烷衍生物的催化效率受噻唑烷环的不同结构和酯基团中R部分的体积的影响。