发明公开
EP0946521A1 VERFAHREN ZUR HERSTELLUNG VON 3-AMINO-1-PHENYL-URACIL-DERIVATEN DURCH UMSETZUNG VON 3,4-DIHYDRO-2H-1,3-OXYAZIN-2,4-DION DERIVATEN MIT HYDRAZIN (ADDUKTEN)
失效
PROCESS FOR通过与肼的3,4-二氢-2H-1,3- OXYAZIN -2,4-二酮衍生物的反应3-氨基-1-苯基尿嘧啶衍生物的制备(加合物)
- 专利标题: VERFAHREN ZUR HERSTELLUNG VON 3-AMINO-1-PHENYL-URACIL-DERIVATEN DURCH UMSETZUNG VON 3,4-DIHYDRO-2H-1,3-OXYAZIN-2,4-DION DERIVATEN MIT HYDRAZIN (ADDUKTEN)
- 专利标题(英): Method for producing 3-amino-1-phenyl-uracil derivatives by making 3,4-dihydro-2h-1,3-oxyazine-2,4 dion derivatives to react with hydrazine (adducts)
- 专利标题(中): PROCESS FOR通过与肼的3,4-二氢-2H-1,3- OXYAZIN -2,4-二酮衍生物的反应3-氨基-1-苯基尿嘧啶衍生物的制备(加合物)
-
申请号: EP97953750.0申请日: 1997-12-05
-
公开(公告)号: EP0946521A1公开(公告)日: 1999-10-06
- 发明人: WROBLOWSKY, Heinz-Jürgen
- 申请人: BAYER AG
- 申请人地址: 51368 Leverkusen DE
- 专利权人: BAYER AG
- 当前专利权人: BAYER AG
- 当前专利权人地址: 51368 Leverkusen DE
- 优先权: DE19961052432 19961217
- 国际公布: WO1998027068 19980625
- 主分类号: C07D239
- IPC分类号: C07D239 ; C07D265
摘要:
The invention relates to a novel method for producing 3-amino-1-phenyl-uracil derivatives of formula (I), wherein R?1, R2, R3, R4 and R5¿ have the meanings cited in the description, and in which substituted phenyloxazine-diones of formula (II) are made to react with hydrazine hydrate of formula (III): H¿2?N-NH2 . H2O or with acid adducts of hydrazine, optionally in the presence of an acid acceptor and optionally in the presence of a diluent.
信息查询