Experimental and theoretical studies on the transannular cyclizations of 3,7-dimethylenebicyclo[3.3.1]nonane with polyfluoroalkyl radicals
作者:Maxim V. Ponomarenko、Yurii A. Serguchev、Bogdan V. Ponomarenko、Gerd-Volker Röschenthaler、Andrey A. Fokin
DOI:10.1016/j.jfluchem.2006.03.006
日期:2006.7
Radical cyclizations of 3,7-dimethylenebicyclo[3.3.1]nonane with CF3I, n-C3F7I, ICF2COOEt and ICF2PO(OEt)2 selectively led to corresponding 3,7-noradamantanes, which were used for preparation of various polyfluoroalkyl substituted noradamantyl amines and carboxylates. DFT computations revealed that chemoselectivity of the radical cyclizations is realized due to the high electrophilicity of the CF3
3,7-二亚甲基二环[3.3.1]壬烷与CF 3 I,n -C 3 F 7 I,ICF 2 COOEt和ICF 2 PO(OEt)2的自由基环化选择性地导致相应的3,7-正金刚烷,用于制备各种多氟烷基取代的金刚烷基胺和羧酸盐。DFT计算表明,由于CF 3自由基的高度亲电性,以及由于全氟碘烷有效地捕获了中间的金刚烷基甲基自由基,因此实现了自由基环化的化学选择性。