Ring-size-selective construction of fluorine-containing carbocycles via intramolecular iodoarylation of 1,1-difluoro-1-alkenes
作者:Takeshi Fujita、Ryo Kinoshita、Tsuyoshi Takanohashi、Naoto Suzuki、Junji Ichikawa
DOI:10.3762/bjoc.13.266
日期:——
biaryl-2-yl group effectively underwent site-selective intramolecular iodoarylation by the appropriate cationic iodine species. Iodoarylation of 2-(2-aryl-3,3-difluoroallyl)biaryls proceeded via regioselective carbon-carbon bond formation at the carbon atoms in β-position to the fluorine substituents, thereby constructing dibenzo-fused six-membered carbocycles bearing a difluoroiodomethyl group. In contrast
带有联芳基-2-基的1,1-二氟-1-烯烃通过适当的阳离子碘物质有效地进行了位点选择性分子内碘代芳基化。2-(2-芳基-3,3-二氟烯丙基)联芳基的碘芳基化是通过在氟取代基的β位碳原子上的区域选择性碳-碳键形成进行的,从而构建了带有二氟碘甲基的二苯并稠合六元碳环。相反,2-(3,3-二氟烯丙基)联芳基在α-碳原子上进行了类似的环化反应,得到了环二氟化的七元碳环。