作者:Yutaka Nakamura、Yuu Ozeki、Kenji Uneyama
DOI:10.1016/j.jfluchem.2007.12.003
日期:2008.4
The reductive Mg-promoted defluorinative-silylation of 2,2,3,3,3-pentafluoropropiophenone readily produces the α-trifluoromethyl enol silyl ether, which then react with electrophiles to give a variety of 2-substituted-3,3,3-trifluoropropiophenones in excellent yields. The same protocol is applicable for the preparation of enol silyl ether of 3,3,3-trifluoropropiophenone. Fluoride ion catalyzed 1,2
Mg促进的2,2,3,3,3-五氟苯乙酮的还原氟硅烷化反应容易产生α-三氟甲基烯醇甲硅烷基醚,然后与亲电子试剂反应生成各种2-取代的3,3,3-三氟苯乙酮,收率极高。相同的协议适用于3,3,3-三氟苯乙酮的烯醇甲硅烷基醚的制备。氟离子催化的2,3,3,3-四氟-2-三甲基甲硅烷基氧基丙苯酮的1,2-脱甲硅烷基-脱氟反应以良好的收率提供了3,3,3-三氟-1-苯基-1,2-丙二酮。