申请人:Sumitomo Chemical Company, Limited
公开号:EP2471766A1
公开(公告)日:2012-07-04
A process for producing 4-methyl-2,3,5,6-tetrafluorobenzyl alcohol comprising the following steps (A) to (D):
Step (A): a step for fluorinating 2,3,5,6-tetrachloroterephthaloyl dichloride to obtain tetrafluoroterephthaloyl difluoride,
Step (B): a step for reducing tetrafluoroterephthaloyl difluoride to obtain 2,3,5,6-tetrafluoro-1,4-benzenedimethanol,
Step (C): a step for chlorinating the 2,3,5,6-tetrafluoro-1,4-benzenedimethanol to obtain 4-chloromethyl-2,3,5,6-tetrafluorobenzyl alcohol,
Step (D): a step for hydrogenating the 4-chloromethyl-2,3,5,6-tetrafluorobenzyl alcohol.
一种生产4-甲基-
2,3,5,6-四氟苯甲醇的工艺,包括以下步骤(A)至(D):
步骤(A):将 2,3,5,6-四
氯对苯二甲酰二
氯氟化,得到四
氟对苯二甲酰二
氟、
步骤(B):还原四
氟对苯二甲酰二氟化物,得到 2,3,5,6-四
氟-1,4-苯二
甲醇、
步骤(C):对 2,3,5,6-四
氟-1,4-苯二
甲醇进行
氯化处理,得到 4-
氯甲基-
2,3,5,6-四氟苯甲醇、
步骤(D):氢化 4-
氯甲基-
2,3,5,6-四氟苯甲醇的步骤。