A facile method for the perfluoroalkylation of pyridine its derivatives
作者:Huang Bingnan、Liu Jintao
DOI:10.1016/s0040-4039(00)94679-3
日期:1990.1
Perfluoroalkylation of pyridine and itsderivatives was achieved by reacting with perfluoroalkyl iodides or bromides in the presence of rongalite under mild conditions.
Direct hydroperfluoroalkylation of ethyl propiolate with perfluoroalkyl iodides and bromides by a Co/Zn bimetal redox system
作者:Chang-Ming Hu、Yao-Ling Qiu
DOI:10.1016/s0022-1139(00)81261-0
日期:1991.11
The addition of perfluoroalkyl halides RfX (1) (X=I, Br) to ethyl propiolate (2) has been performed smoothly with zinc powder and a catalytic amount of bromo(pyridine)cobaloxime(III) (3) in ethanol. The product (4) was a mixture of Z- and E-isomers, with the former predominating.
用锌粉和在乙醇中催化量的溴(吡啶)钴氧肟(III)(3)平稳地将全氟烷基卤化物R f X(1)(X = I,Br)添加到丙酸乙酯(2)中。产物(4)是Z-和E-异构体的混合物,其中前者占主导地位。
Studies on fluoroalkylation and fluoroalkoxylation. Regioselective synthesis of fluoroalkylated imidazoles
作者:Qing-Yun Chen、Zai-Ming Qiu
DOI:10.1039/c39870001240
日期:——
High yields of 4-fluoroalkylimidazoles are obtained regioselectively by the reactions of an imidazole anion and fluoroalkyl iodides or bromides under mild conditions; an SRN1 mechanism is proposed.
In the presence of sodium dithionite, perfluoroalkyl bromides reacted with olefins readily in aqueous iso-propanol solution under mild conditions, giving the corresponding addition–sulfination products, RFCH2CH(R)SO2Na, in good yields. A radical mechanism was proposed for this reaction.
在连二亚硫酸钠存在下,全氟烷基溴化物在温和的条件下在异丙醇水溶液中容易与烯烃反应,从而以高收率得到相应的加成硫化产物R F CH 2 CH(R)SO 2 Na。提出了用于该反应的根本机理。
Studies on sulfinatodehalogenation. XXVI. Perfluoroalkylation of nitrogen-containing heteroaromatic compounds with perfluoroalkyl halides and Rongalite
作者:Bing-Nan Huang、Jin-Tao Liu
DOI:10.1016/s0022-1139(00)80061-5
日期:1993.9
Perfluoroalkylation of some nitrogen-containing heteroaromatic compounds such as pyrrole, pyridines, quinoline and isoquinoline has been achieved by reacting with perfluoroalkyl iodides or bromides in the presence of Rongalite under mild conditions. The distribution of isomers formed was consistent with a radical reaction mechanism.