申请人:3M Innovative Properties Company
公开号:US07988877B2
公开(公告)日:2011-08-02
A method of making a fluorinated ether includes combining, in a polar aprotic solvent: a fluorinated alcohol represented by the formula X—Rf1CH2OH, and a fluorinated sulfonate ester represented by the formula Rf2CH2OS(═O)2Rf3, and base; and obtaining a fluorinated ether represented by the formula Y—Rf1CH2OCH2Rf2—Y. Rf1 is selected from perfluorinated C1-C10 alkylene groups having from 1 to 10 carbon atoms and partially fluorinated C1-C10 alkylene groups, and derivatives thereof having catenated heteroatom(s). X represents H, F, or an HOCH2— group. Rf2 is selected from perfluorinated C1-C10 alkyl groups and partially fluorinated C1-C10 alkyl groups, and derivatives thereof having catenated heteroatom(s). Rf3 is a C1-C4 alkyl group. Y represents H, F, or an Rf2CH2OCH2— group. A variant method, useful for preparing symmetric fluorinated ethers, is also disclosed. The present disclosure also provides fluorinated ethers preparable according to the methods. Use of fluorinated ethers in various applications is also disclosed.
一种制备氟化醚的方法包括在极性无质子溶剂中混合以下物质:由公式X—Rf1CH2OH表示的氟化醇,和由公式Rf2CH2OS(═O)2Rf3表示的氟化磺酸酯,以及碱;并获得由公式Y—Rf1CH2OCH2Rf2—Y表示的氟化醚。其中,Rf1从具有1至10个碳原子的全氟化C1-C10烷基组和部分氟化的C1-C10烷基组中选择,并且具有连续杂原子的衍生物。X代表H,F或HOCH2-基团。Rf2从全氟化C1-C10烷基和部分氟化的C1-C10烷基组中选择,并且具有连续杂原子的衍生物。Rf3是C1-C4烷基。Y代表H,F或Rf2CH2OCH2-基团。还公开了一种用于制备对称氟化醚的变体方法。本公开还提供了根据该方法可制备的氟化醚。还公开了在各种应用中使用氟化醚的方法。