ALVERNHE G.; LACOMBE S.; LAURENT A., TETRAHEDRON LETT., 1980, 21, NO 15, 1437-1440
作者:ALVERNHE G.、 LACOMBE S.、 LAURENT A.
DOI:——
日期:——
Action de l'acide fluorhydrique sur les azirines : synthèse d'α-fluorocétones et de difluoroamines - étude de l'orientation de la réaction
作者:Gérard Alvernhe、Sylvie Lacombe、André Laurent
DOI:10.1016/s0040-4039(00)92739-4
日期:——
Addition of Olah's reagent in benzene or methylene chloride to azirines leads to the formation of difluoroamines or α-fluoroketones. This reaction has been applied to the synthesis of 17 α-fluoropregnenolone. The formation of fluoroketone proceeds via a cationic intermediate. Yield is improved when using a more nucleophilic fluorinating reagent obtained by addition of triethylamine to Olah's reagent