51318-62-8
Ethyl (2E)-4-bromo-3-methyl-2-butenoate
+
603-35-0
三苯基膦
→
29310-37-0
(3-Ethoxycarbonyl-2-methylallyl)triphenylphosphonium Bromide
638-10-8
3-甲基-2-丁烯酸乙酯
128590-29-4
ethyl 2-methyl-4-phenylcyclopenta-1,3-diene-1-carboxylate