Spiro[2,2‐dimethyl‐benzofuran,bicyclo [4.2.0]octane]‐7′‐one with fused and spirocyclic oxygen‐containing rigid skeleton structure is obtained via Wolff rearrangement and cycloaddition with good yields. Then Spiro[2,2‐dimethyl‐benzofuran,hexahydro‐isobenzofuran]‐7′‐one is synthesized by further Baeyer‐Villiger oxidation. These two kinds of products have a special fused and spirocyclic oxygen‐containing rigid skeleton structure and are reported by our group.

中文翻译：

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通过3-重氮杂色-4-酮和烯烃高效合成6-氧杂螺[3.4]辛丹-1-酮

通过Wolff重排和环加成反应获得具有稠合和螺环含氧刚性骨架结构的螺[2,2-二甲基-苯并呋喃，双环[4.2.0]辛烷] -7'-one。然后通过进一步的Baeyer-Villiger氧化合成Spiro [2,2-二甲基-苯并呋喃，六氢-异苯并呋喃] -7'-one。这两种产品具有特殊的熔融和螺环含氧刚性骨架结构，这是我们小组报告的。