丁-2-炔醛 、
(Z)-1-ethylthio-1-(trimethylsiloxy)propene 在
tin(II) trifluoromethanesulfonate 、
dibutyltin diacetate (S)-1-methyl-2-<(N-naphthylamino)methyl>pyrrolidine 作用下,
以
二氯甲烷 为溶剂,
生成
(2S,3S)-2-Methyl-3-trimethylsilanyloxy-hex-4-ynethioic acid S-ethyl ester 、 (2R,3R)-2-Methyl-3-trimethylsilanyloxy-hex-4-ynethioic acid S-ethyl ester 、 (2S,3R)-2-Methyl-3-trimethylsilanyloxy-hex-4-ynethioic acid S-ethyl ester