作者:Nathan L. Bauld、Jingkui Yang
DOI:10.1016/s0040-4039(99)01842-0
日期:1999.12
The cation radical Diels-Alder cycloadditions of cis- and trans-1-propenyl aryl ethers to 1,3-cyclopentadiene, catalyzed by tris(4-bromophenyl)aminium hexachloroantimonate in dichloromethane solution, are found to be non-stereospecific, in contrast to the stereospecificity observed in other cation radical Diels-Alder reactions previously studied. These and supporting experiments indicate that, in this
与三(4-溴苯基)六氯锑酸铵在二氯甲烷溶液中催化的顺式和反式-1-丙烯基芳基醚的阳离子基团的狄尔斯-阿尔德环加成反应成1,3-环戊二烯是非立体特异性的,这与在先前研究的其他阳离子自由基Diels-Alder反应中观察到的立体特异性。这些和辅助实验表明,在该特定系统中,反应通过两步机理进行。