25662-28-6
环戊烯-1-羧酸甲酯
→
~78%
108384-35-6
3-氧代-1-环戊烯-1-羧酸甲酯
110890-42-1
methyl 1-phenylsulfonyl-3-hydroxycyclopentane-1-carboxylate
~68%
~53%
+
119245-13-5
methyl 6-oxabicyclo[3.1.0]hexane-1-carboxylate