METHOD FOR PRODUCING FLUOROVINYL ETHER COMPOUND

    公开(公告)号:US20230331651A1

    公开(公告)日:2023-10-19

    申请号:US18212841

    申请日:2023-06-22

    申请人: AGC INC.

    IPC分类号: C07C41/22 C07C41/46

    CPC分类号: C07C41/22 C07C41/46

    摘要: To provide a method for producing a fluorovinyl ether compound, whereby it is possible to suppress the generation of byproducts. The method for producing a fluorovinyl ether compound of the present invention is a method for producing a fluorovinyl ether compound, which comprises heat-treating a compound having a group represented by the formula (1): F—C(═O)—CF(X)—(CF2)n—O— in the presence of an oxide containing at least one element selected from the group consisting of alkali metal elements and alkaline earth metal elements, to obtain a fluorovinyl ether compound having a group represented by the formula (2): CF2═CF—O—, wherein the specific surface area of the oxide before the heat treatment is at least 1.0 m2/g. In the formula (1), n is 0 or 1, wherein when n is 0, X is CF3 and when n is 1, X is F.

    METHOD FOR PRODUCING SEVOFLURANE
    7.
    发明申请

    公开(公告)号:US20180222834A1

    公开(公告)日:2018-08-09

    申请号:US15473940

    申请日:2017-03-30

    IPC分类号: C07C41/42 C07C41/22

    摘要: An object of the present invention is to remove a compound A from “sevoflurane containing fluoromethyl-1,1,3,3,3-pentafluoroisopropenyl ether (compound A)” so as to collect high-purity sevoflurane. The present invention concerns a method for producing sevoflurane containing substantially no compound A, comprising the following steps of: bringing a composition containing hydrogen fluoride (HF) and water at a mass ratio of 1:1 to 1:30 into contact with a 1st organic liquid containing sevoflurane and a compound A, thereby obtaining a 2nd organic liquid containing the compound A in an amount that is lower than that in the 1st organic liquid (step 1a); and distilling the 2nd organic liquid under the presence of a degradation inhibitor, thereby obtaining sevoflurane containing substantially no compound A as a main distillation fraction (step 2).