Microwave-irradiated Diels–Alder reactions of anthracene and endoxides (6a–g) in water afforded the cycloadducts (8a–g) with high efficiencies. The extended triptycenes (2a–g) were readily obtained by dehydration of 8a–g in a mixture of AcOH and Ac2O with good overall yields.
微波在
水中与
蒽和内氧化物(6a – g)的Diels–Alder反应使环加合物(8a – g)具有较高的效率。通过在AcOH和Ac 2 O的混合物中将8a – g脱
水,可以轻松获得扩展的三联体(2a – g),且总收率良好。