This report describes the scope and mechanism of the solvent-dependent, chemoselective oxidative coupling of 1-aryl-1,3-dicarbonyls with styrene using Ce(IV) reagents. Dihydrofuran derivatives are obtained when reactions are performed in methanol whereas α-tetralones can be selectively synthesized in acetonitrile and methylene chloride. Mechanistic studies are consistent with the rate of solvent-assisted
                                    本报告描述了使用 Ce(IV) 试剂将 1-芳基-1,3-二羰基化合物与
苯乙烯进行溶剂依赖性
化学选择性氧化偶联的范围和机制。二氢
呋喃衍
生物是在
甲醇中进行反应得到的,而α-四氢
萘酮可以在
乙腈和
二氯甲烷中选择性地合成。机理研究与在选择性形成产物中起不可或缺作用的自由基阳离子中间体的溶剂辅助去质子化速率一致。