70562-47-9
→
~80%
56512-51-7
vinylglycine
100038-68-4
methyl 2-((tert-butoxycarbonyl)amino)but-3-enoate
~47%
600-17-9
2-Hydroxy-3-butenoicacid
107-93-7
巴豆酸
133559-28-1
methyl 2-((diphenylmethylene)amino)but-3-enoate