287194-32-5
N-(5,5-dimethoxy-2-oxo-7-oxabicyclo[4.1.0]hept-3-en-4-yl)-2-hydroxybenzamide
→
~71%
287194-37-0
N-(2,5-dioxo-7-oxabicyclo[4.1.0]hept-3-en-4-yl)-2-hydroxybenzamide
5538-51-2
邻乙酰水杨酰氯