68843-72-1
ethyl (RS)-2-aminopent-4-enoate
+
98-59-9
对甲苯磺酰氯
→
~79%
120318-54-9
ethyl 2-[(4-methylphenyl)sulfonylamino]pent-4-enoate
115289-57-1
ethyl N-(diphenylmethylene)-2-amino-4-pentenoate