Invention Grant
- Patent Title: Process for preparing tetrafluorobenzene carbaldehyde alkyl acetal
- Patent Title (中): 制备四氟苯甲醛烷基缩醛的方法
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Application No.: US11993302Application Date: 2006-06-12
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Publication No.: US07790931B2Publication Date: 2010-09-07
- Inventor: Haruhiko Ikeda , Hideo Miyata , Katsutoshi Ohno , Katsuro Urakawa
- Applicant: Haruhiko Ikeda , Hideo Miyata , Katsutoshi Ohno , Katsuro Urakawa
- Applicant Address: JP Tokyo
- Assignee: Showa Denko K.K.
- Current Assignee: Showa Denko K.K.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2005-181973 20050622
- International Application: PCT/JP2006/312187 WO 20060612
- International Announcement: WO2006/137347 WO 20061228
- Main IPC: C07C45/42
- IPC: C07C45/42 ; C07C43/307
Abstract:
A process for preparing tetrafluorobenzene carbaldehyde alkyl acetal represented by the following formula (II), comprising reducing tetrafluorocyanobenzene represented by the following formula (I) with a metal catalyst containing a platinum group metal in the presence of an alkyl alcohol represented by R—OH (R is an alkyl group of 1 to 4 carbon atoms) and an acid; (I) wherein m is 1 or 2, n is 0 or 1, and m+n is 2, (II) wherein m and n are the same as those in the formula (I), and R is an alkyl group of 1 to 4 carbon atoms.
Public/Granted literature
- US20100105954A1 PROCESS FOR PREPARING TETRAFLUOROBENZENE CARBALDEHYDE ALKYL ACETAL Public/Granted day:2010-04-29
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