申请人:E. I. Du Pont de Nemours and Company
公开号:US05382704A1
公开(公告)日:1995-01-17
A process is disclosed for producing a fluorinated ether of the formula R.sub.2 CHOCF.sub.2 A, where A is Cl or F, and each R is H, (CF.sub.2).sub.n Cl, (CF.sub.2).sub.n F or (CF.sub.2).sub.n H (n is an integer from 1 to 10) by reacting a first reactant of the formula R.sub.2 CHOY where Y is H, COF, COCl or COOCHR.sub.2 (R is as defined above), a second reactant selected of the formula CZ.sub.2 Cl.sub.2 or COZ.sub.2 where each Z is independently Cl or F (provided that when A is Cl, the second reactant is CZ.sub.2 Cl.sub.2), and HF; and recovering the fluorinated ether from the reaction products. Also disclosed are bis-ethers of the formula (CF.sub.3 (CF.sub.2).sub.m).sub.2 CHOCF.sub.2 OCH(CF.sub.2).sub.m CF.sub.3).sub.2, where m is an integer of 0 to 3, which can also be produced by the process.
本发明揭示了一种制备化学式为R.sub.2 CHOCF.sub.2 A的氟化醚的方法,其中A为Cl或F,每个R为H,(CF.sub.2).sub.n Cl,(CF.sub.2).sub.n F或(CF.sub.2).sub.n H(n为1至10的整数),通过将化学式为R.sub.2 CHOY的第一反应物与选择的化学式为CZ.sub.2 Cl.sub.2或COZ.sub.2的第二反应物(其中每个Z独立地为Cl或F,但当A为Cl时,第二反应物为CZ.sub.2 Cl.sub.2)以及HF反应,并从反应产物中回收氟化醚。本发明还揭示了化学式为(CF.sub.3(CF.sub.2).sub.m).sub.2 CHOCF.sub.2 OCH(CF.sub.2).sub.mCF.sub.3).sub.2的双醚,其中m为0至3的整数,该双醚也可以通过该方法制备。