108-24-7
乙酸酐
+
70837-20-6
2-amino-pent-4-ynoic acid methyl ester
→
~80%
290367-37-2
methyl 2-acetamidopent-4-ynoate
167904-79-2
4-Pentynoic acid, 2-[(diphenylmethylene)amino]-, methyl ester