Perfluoro-4-methyl-1,3-dioxole: a new monomer for high-Tg amorphous fluoropolymers
摘要:
A 4-Chloro-5-trifluoromethyl-2,2,4-trifluoro-1,3-dioxolane (1) was synthesised by reaction of CF2(OF)(2) with CF3-CH=CFCl; the elimination of HCl from (1) in basic conditions led to the formation of dioxole perfluoro-4-methyl-1,3-dioxole (2). Both these synthetic steps gave the corresponding product in high yield.A new synthetic route for the preparation of CF3-CH=CFCl, starting from CF2ClBr and CH2=CF2, together with some examples of polymerisation products obtained by reaction of dioxole (2) with fluoroolefins are also reported. (C) 2003 Elsevier B.V. All rights reserved.
Aluminum chlorofluoride (ACF, AlClxF3−x, x≈0.05–0.3) as highly Lewisacidic nanoscopic compound enables chlorodefluorination reactions at methanes and fluorinated olefins in the presence of ClSiEt3.
作为高路易斯酸性纳米级化合物的氯氟化铝(ACF, AlCl x F 3− x , x ≈0.05–0.3) 能够在 ClSiEt 3存在下对甲烷和氟化烯烃进行氯脱氟反应。
Perfluoro-4-methyl-1,3-dioxole: a new monomer for high-Tg amorphous fluoropolymers
作者:Antonio Russo、Walter Navarrini
DOI:10.1016/j.jfluchem.2003.10.009
日期:2004.1
A 4-Chloro-5-trifluoromethyl-2,2,4-trifluoro-1,3-dioxolane (1) was synthesised by reaction of CF2(OF)(2) with CF3-CH=CFCl; the elimination of HCl from (1) in basic conditions led to the formation of dioxole perfluoro-4-methyl-1,3-dioxole (2). Both these synthetic steps gave the corresponding product in high yield.A new synthetic route for the preparation of CF3-CH=CFCl, starting from CF2ClBr and CH2=CF2, together with some examples of polymerisation products obtained by reaction of dioxole (2) with fluoroolefins are also reported. (C) 2003 Elsevier B.V. All rights reserved.