Cycloaddition−Fragmentation as a Route to Bicyclic Ring Systems. Use of the Intermolecular Diyl Trapping Reaction
作者:Joseph A. Leonetti、Tim Gross、R. Daniel Little
DOI:10.1021/jo951879h
日期:1996.1.1
A route to bicyclo[n.3.0] ring systems (n = 5-7) has been devised. Key transformations include an intermolecular diyl trapping reaction (1 + 3 --> 4), and fragmentation of the resulting tricyclic cycloadduct 4 (4 --> 5). A variety of diylophiles were examined, including electron deficient (6, 7, 21, 29, 30, 31), electron rich (8), and push-pull cycloalkenes (9, 10, 19, 20).
已经设计了通往双环[n.3.0]环系统(n = 5-7)的途径。关键的转化包括分子间二基捕获反应(1 + 3-> 4)和所得三环环加合物4的断裂(4-> 5)。检查了各种亲二烯体,包括缺电子的(6、7、21、29、30、31),富电子的(8)和推挽式环烯烃(9、10、19、20)。