105-45-3
乙酰乙酸甲酯
+
109-70-6
1-溴-3-氯丙烷
→
~90%
57987-84-5
methyl 3,4-dihydro-6-methyl-2H-pyran-5-carboxylate
541-50-4
3-氧丁酸
10226-30-9
6-氯-2-已酮