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。