3-三甲基甲硅烷基丙炔醛 、 (E)-(2R,3R)-3-(Dimethyl-phenyl-silanyl)-2-trimethylsilanyloxy-hex-4-enoic acid methyl ester 在
三氟甲磺酸三甲基硅酯 作用下,
生成
(2S,5R,6R)-5-Methyl-6-trimethylsilanylethynyl-5,6-dihydro-2H-pyran-2-carboxylic acid methyl ester 、 (S)-2-[(2R,3S,4R,5R)-3-(Dimethyl-phenyl-silanyl)-4-methyl-5-trimethylsilanylethynyl-tetrahydro-furan-2-yl]-propionic acid methyl ester