A Novel Synthesis of 5-Perfluoroalkyl-2,3-dihydro-1,4-diazepines from 1-Perfluoroalkyl-2-iodoethylenes
作者:Jin-Tao Liu、Fu-Lu Zhao
DOI:10.1055/s-2003-41062
日期:——
A novel method for the synthesis of 5-perfluoroalkyl-2,3-dihydro-1,4-diazepines using easily available starting materials is described. 1-Perfluoroalkyl-2-iodoethylenes, obtained from the reaction of perfluoroalkyl iodides and alkynes, reacted with ethylenediamine under mild conditions to give the title compounds in good yields. A possible mechanism is proposed.
Study of the nucleophilic reaction of 2-mercaptoethanol with 1-fluoroalkyl-2-iodo-alkenes
作者:Hui-Ping Guan、Bing-Hao Luo、Chang-Ming Hu
DOI:10.1016/s0022-1139(97)00074-2
日期:1997.10
The stepwise nucleophilic addition of 2-mercaptoethanol (2) to 1-fluoroalkyl-2-iodo-alkenes (1) was studied. Fluorine-containing building blocks of a new type (4) containing a fluorine atom, a fluoroalkyl-substituted double bond and a latent carbonyl group were synthesized in good yield via the intermediate thioethers 3. A reasonable pathway is suggested. (C) 1997 Elsevier Science S.A.
Convenient Synthesis of Fluoroalkyl-Substituted Heterocycles from 1-Fluoroalkyl-2-iodoalkenes
作者:Hui-Ping Guan、Xiao-Qing Tang、Bing-Hao Luo、Chang-Ming Hu
DOI:10.1055/s-1997-1376
日期:1997.12
A convenient synthesis of fluoroalkyl-substituted heterocycles including 3-trifluoromethylpyrazoles 7, 5-trifluoromethylisoxazoles 8 and 4-trifluoromethylpyrimidines 9 is described. This two-step sequence consists of a radical addition of fluoroalkyl iodides 1 to alkynes 2 to afford the corresponding alkenes 3 and condensation of 3 with hydrazine, hydroxylamine or amidines to give the afore-mentioned heterocycles, respectively. A possible pathway is suggested.
Studies on samarium diiodide initiated addition reaction of fluoroalkyl iodides to alkynes and its mechanism
作者:Shengming Ma、Xiyan Lu
DOI:10.1016/s0040-4020(01)85421-1
日期:1990.1
Samariumdiiodide was found to be an effective initiator in the addition reaction of fluoroalkyl iodides to alkynes. A single electrontransfer radical chain mechanism was proposed for the reaction based on ESR studies and other experimental results.