Journal of the American Chemical Society p. 8954 - 8959 (1993)
Update date:2022-08-04
Topics:
Hung, Ming-H.
Farnham, William B.
Feiring, Andrew E.
Rozen, Shlomo
Linear and cyclic perfluorinated polyethers are prepared by a new route involving polymerization of a trifluorovinyl ether alcohol (CF2=CFORfCH2OH (1), Rf = CF2CF(CF3)OCF2CF2) followed by fluorination of the intermediate polyfluorinated polyethers. Polymerization occurs by ionic addition of OH groups to trifluorovinyl ether groups. In the absence of solvent, linear polymers with Mn values up to 29000 are obtained in excellent yield. In glyme solution, cyclic oligomers are the major products and a cyclic dimer is obtained in yields as high as 60%. Fluorinated macrodiols with Mn values to 5000 are obtained by copolymerization of 1 with a fluorinated diol. The intermediate linear and cyclic partially fluorinated polyethers have excellent solubility in organic solvents and the cyclics can complex anions through hydrogen bonding. Photofluorination of these polyethers with elemental fluorine in perfluorinated solvents proceeds smoothly with little fragmentation to afford the corresponding perfluorinated analogues in excellent yield.
View MoreAnqing World Chemical Co., Ltd.
Contact:+86-556-5800026
Address:Daguan Economic Development Zone of circular economy industrial park Anqing City Anhui province
Shanghai Yudiao Chemistry Technology Co.,Ltd
Contact:0086-18964703211
Address:Building NO.5, NO.218,Rongtian Road,ganxiang town,Jinshan District,shanghai,201518,china
Contact:86-21-50966856
Address:Building 5,300 Chuanzhan Road,Pudong New District,Shanghai
Jiangsu Feymer Technology Co., Ltd.
Contact:+86-512-58110132
Address:Fenghuang Town, Zhangjiagang City, Jiangsu Province, China
Jiaxing Carry Bio-Chem Technology Co.,Ltd
website:http://www.carrybiotech.com
Contact:0573-82788958
Address:Add.Fl 3th, Pharm Vally,Kaichuang Rd, Xiuzhou District, Jiaxing, Zhejiang,314031,China
Doi:10.1246/bcsj.64.416
(1991)Doi:10.1021/jo00015a006
(1991)Doi:10.1021/ja00016a083
(1991)Doi:10.1021/jo401696c
(2013)Doi:10.1039/c1dt10861a
(2011)Doi:10.1080/00397911.2019.1567788
(2019)