Synthesis of novel perfluoroalkyl-containing polyethers
摘要:
The synthesis of iodo(perfluoroalkyl)epoxides by radical addition of perfluoroalkyl iodides to allyl glycidyl ether and 1,2-epoxydec-9-ene is described. Dehydroiodination of additional products upon treatment with 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) gives unsaturated products. The use of Bu(3)SnH/Bz(2)O(2) as a reduction reagent of iodo(perfluoroalkyl)allyl glycidyl ethers allows to save oxirane ring. Cationic polymerization of saturated or functional (with iodine or double bond) fluoroalkyl oxiranes under action of catalytic amount of BF(3)center dot Et(2)O proceeds only on epoxide group. In case of poly(9-iod-10-(perfluoroalkyl)-1,2-epoxyalkane) iodine atoms are removed by standard zinc reduction. (C) 2009 Elsevier B.V. All rights reserved.
Reactions of [2-iodo-3-(perfluoroalkyl)propyl]glycidyl ethers with alcohols under basic conditions
作者:D. N. Bazhin、T. I. Gorbunova、A. Ya. Zapevalov、V. I. Saloutin
DOI:10.1007/s11172-008-0329-8
日期:2008.11
sodium alkoxides in the corresponding alcohols, [2-iodo-3-(perfluoroalkyl)propyl]glycidyl ethers are converted into 3-alkoxy-1-[3-(perfluoroalkyl)prop-2-enyloxy]-propan-2-ols in 56–78% yields, while its reaction with 2,2,2-trifluoroethanol and phenol under phase transfer conditions (NaOH, CH2Cl2-H2O, Bu4N+I−, 35–40 °C) gives 3-alkoxy1-[2-iodo-3-(perfluoroalkyl)propoxy]propan-2-ols (yields 45–72%).
Dehydroiodination of 2-iodo-3-(polyfluoroalkyl)propoxymethyloxiranes
作者:D. N. Bazhin、T. I. Gorbunova、A. Ya. Zapevalov、V. I. Saloutin
DOI:10.1007/s11172-007-0350-3
日期:2007.11
Dehydroiodination of 2-iodo-3-(polyfluoroalkyl)propoxymethyloxiranes upon treatment with 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) afforded (polyfluoroalk-2-enyl)oxymethyloxiranes as E-and Z-isomers in ratio depending on the nature of the fluoroalkyl substituent.