Macrocycles with sulfide and amine binding sites as chiral ligands for nickel catalyzed cross coupling of a grignard reagent with vinyl bromide
作者:Marc Lemaire、Bindert K. Vriesema、Richard M. Kellogg
DOI:10.1016/s0040-4039(00)98674-x
日期:1985.1
Synthetic routes to macrocycles derived from (S)-phenyl alanine and (S)-cysteine have been developed. The catalyzed coupling of the Grignard reagent of 1-chloro-1-phenylethane and vinyl bromide in the presence of these ligands proceeds usually in good yields and in enantiomeric excesses (e.e.) of up to 46%.
已经开发了从(S)-苯基丙氨酸和(S)-半胱氨酸衍生到大环的合成途径。在这些配体的存在下,1-氯-1-苯基乙烷的格氏试剂和溴化乙烯的催化偶联通常以良好的收率和高达46%的对映体过量(ee)进行。