(E)-5-(tert-Butyl-dimethyl-silanyloxy)-4-hydroxy-3-methyl-pent-2-enoic acid methyl ester 、
碘甲烷 在
silver(l) oxide 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成 (E)-(R)-5-(tert-Butyl-dimethyl-silanyloxy)-4-methoxy-3-methyl-pent-2-enoic acid methyl ester 、 (E)-(S)-5-(tert-Butyl-dimethyl-silanyloxy)-4-methoxy-3-methyl-pent-2-enoic acid methyl ester