Reduction of cis-3,4-dibenzoyltetrahydrofuran with BMS, very surprisingly yields diaxial 2,4-diphenyl-3,7-dioxabicyclo[3.3.0]octane in a reaction that contrasts sharply with processes involving equilibrating benzylic carbocations which yield the diequatorial isomer.
用BMS还原顺式-3,4-二苯甲酰基
四氢呋喃,非常令人惊奇地生成二轴2,4
-二苯基-3,7-二恶双环[3.3.0]
辛烷,该反应与涉及平衡苄基碳正离子的过程形成鲜明对比,后者可生成二
水异构体。 。