Synthesis of optically pure fluoro- and gem-chlorofluoro-cyclohexane derivatives by intramolecular trapping of dihaloalkyl radicals.
作者:Alberto Arnone、Pierfrancesco Bravo、Giancarlo Cavicchio、Massimo Frigerio、Fiorenza Viani
DOI:10.1016/s0957-4166(00)82303-4
日期:1992.1
gem-Chlorofluorocyclohexanols 8 bearing a methyl and a p-tolylsulphinyl substituent have been obtained in optically pure form by radical cyclization of the corresponding halo-alkenes 4. Reductive dechlorination of both (6R)- and (6S)-8 gave fluoroderivative (6R)-9, which through functional group elaborations gave the hydroxyfluoro- and trihydroxyfluoro-cyclohexane derivatives 12 and 15.