作者:Nigel P. Hacker、John F.W. McOmie
DOI:10.1016/s0040-4020(01)91279-7
日期:1984.1
UV irradiation of phenanthrene and 1,1-dichloro-, 1,2-dichloro-, and 1,1,2-trichloroethenes resulted m [2+2]cycloaddition to give cyclobutane derivatives. Treatment of the 1,2-dichloro-adducts with N-bromosuccinimide resulted in aromatisation to yield cis- and tras-l,2-dichloro-1,2- dihydrocyclobuta[l)phenanthrene, whereas the 1,1-dichloro-adduct resulted in aromatisation and hydrolysis to give cy
菲和1,1-二氯,1,2-二氯和1,1,2-三氯乙烯的紫外线辐射导致[2 + 2]环加成反应生成环丁烷衍生物。的1,2-二氯加成物与N-溴代琥珀酰亚胺处理导致芳构以收率顺-和TRAS -1,2-二氯-1,2- dihydrocyclobuta [升)菲,而1,1-二氯加成物导致进行芳构化和水解,得到环丁[ l ]菲-1(2H)-一。三氯乙烯加合物得到1,2-二氯-2a,10b-二氢环丁酸酯[ l碱处理后生成的菲,并与N-溴代琥珀酰亚胺反应,导致环丁烷环中的溴取代。讨论了加合物的立体化学和溴化反应的立体选择性。