烯胺和含氟碘烷的单电子转移反应──α－氟烷基酮、醛的合成  

Single Electron Transfer Reactions of Enamines with Polyfluoroalkyl Iodides──Novel Synthesis of α-Polyfluoroalkyl Ketones and Aldehydes

作　　者：贺海鹰[1] 赵成学[1] 翁中原 白令君[1] 瘳仁安 

机构地区：[1]华中理工大学化学系,南开大学元素有机化学国家重点实验室

出　　处：《高等学校化学学报》1996年第6期896-900,共5页Chemical Journal of Chinese Universities

基　　金：南开大学元素有机化学国家重点实验室基金

摘　　要：由多氟烷基碘化和的对烯胺的氟烷基化反应，合成了６种α－氟烷基酮和３种α氟烷基醛并完成了它们的ＵＶ、ＩＲ、ＭＳ、ＨＮＭＲ和＾１９ＦＮＭＲ结构鉴定及元素分析，通过活泼中间体的自旋截捕和抑制实验，揭示了本反应的单电子转换机理并发现ＳｍＩ２的四氢呋喃溶液可催化本反应，使反应时间缩短，含氟酮产率提高。Fairly high yields of α-polyfluoroalkyl ketones(aldehydes) formed in the reactions of enamines with polyfluoroalkyl iodides were characterized by UV,IR,MS,1￣H NMR,￣(19)F NMR and elemental analysis,The electron transfer in nature of these reactions was proved by spin trapping and inhibition experiments.The addition of catalytic amounts of SmI_2 has significantly shortened the reaction time and increased the yields of α-polyfluoroalkyl ketones.

关 键 词：烯胺 钐 氟烷基化 电子转移反应 氟烷基醛 

分 类 号：O623.55[理学—有机化学]