This work presents a regioselective route to synthesize seven‐membered ring lactones fused to coumarin scaffold in good yields and high regioselectivity. Additionality, the carbonylation reaction does not require acidic conditions and proceeds in the absence of any other additive such as hydrogen (H2).
这项工作提出了一种区域选择性途径,以高产率和高区域选择性合成与
香豆素骨架融合的七元环内酯。另外,羰基化反应不需要酸性条件,并且可以在不存在任何其他添加剂(例如氢(H 2))的情况下进行。