methyl (E)-2-(acetamidomethylene)-3-oxobutanoate 、
(S,S)-4,5-diphenyl-2-methylene-1,3-dioxolane 以
四氢呋喃 为溶剂,
反应 72.0h,
生成
methyl 4-acetylamino-5,6-dihydro-2-methyl-4'S,5'S-diphenylspiro[4H-pyran-6,2'-[1,3]dioxolan]-3-carboxylate 、 methyl 4-acetylamino-5,6-dihydro-2-methyl-4'S,5'S-diphenylspiro[4H-pyran-6,2'-[1,3]dioxolan]-3-carboxylate