84102-75-0
5-氰基-2-苯并[b]呋喃甲酸
→
~81%
84102-83-0
5-cyano-1-benzofuran-2-carbonyl chloride
80531-14-2
2-acetylbenzofuran-5-carbonitrile
38220-75-6
2-乙酰基-5-溴苯并[b]呋喃