The naphthalene-tethered system enabled dearomative Diels–Alder/sulfur extrusion reaction of thiophenes and alkynes. Tri(o-tolyl)phosphine [P(o-tol)3] worked effectively as a sulfur scavenger to suppress the side reactions, and a wide range of fluoranthenes were obtained in moderate to excellent yields.
萘系链系统能够实现噻吩和炔烃的脱芳香狄尔斯-阿尔德/硫挤出反应。三(邻甲苯基)膦[P( o -tol) 3 ]作为硫清除剂有效地抑制了副反应,并以中等至优异的产率获得了各种荧蒽。