Invention Grant
- Patent Title: Process for producing quinazolin-4-one derivative
- Patent Title (中): 喹唑啉-4-酮衍生物的制备方法
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Application No.: US10502734Application Date: 2003-01-28
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Publication No.: US08367824B2Publication Date: 2013-02-05
- Inventor: Shigeyoshi Nishino , Kenji Hirotsu , Hidetaka Shima , Takashi Harada , Hiroyuki Oda
- Applicant: Shigeyoshi Nishino , Kenji Hirotsu , Hidetaka Shima , Takashi Harada , Hiroyuki Oda
- Applicant Address: JP Ube-shi, Yamaguchi
- Assignee: Ube Industries Ltd.
- Current Assignee: Ube Industries Ltd.
- Current Assignee Address: JP Ube-shi, Yamaguchi
- Agency: Nixon Peabody LLP
- Agent Jeffrey L. Costellia
- Priority: JP2002-17957 20020128; JP2002-40929 20020219; JP2002-82607 20020325; JP2002-168443 20020610; JP2002-178661 20020619; JP2002-246657 20020827; JP2002-326752 20021111; JP2002-349456 20021202
- International Application: PCT/JP03/00805 WO 20030128
- International Announcement: WO03/064399 WO 20030807
- Main IPC: C07D239/72
- IPC: C07D239/72
Abstract:
A process for producing a quinazolin-4-one compound having the formula: [wherein R1, R2, R3 and R4 each represents a group not participating in the below-mentioned reaction, and R1, R2, R3 and R4 can be combined together to form a ring] which comprises reacting an anthranilic acid derivative having the formula: [wherein R5 is a hydrogen atom or a hydrocarbyl group] with a formic acid derivative in the presence of an ammonium carboxylate.
Public/Granted literature
- US20050080262A1 Process for producing quinazolin-4-one derivative Public/Granted day:2005-04-14
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