发明授权
- 专利标题: 4-Amino-1,2,4-triazin-5-ones
- 专利标题(中): 4-氨基-1,2,4-三嗪-5-酮
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申请号: US625277申请日: 1975-10-23
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公开(公告)号: US4057546A公开(公告)日: 1977-11-08
- 发明人: Helmut Timmler , Wilfried Draber
- 申请人: Helmut Timmler , Wilfried Draber
- 申请人地址: DT Leverkusen
- 专利权人: Bayer Aktiengesellschaft
- 当前专利权人: Bayer Aktiengesellschaft
- 当前专利权人地址: DT Leverkusen
- 优先权: DT2364474 19731224
- 主分类号: C07D253/06
- IPC分类号: C07D253/06
摘要:
Novel glyoxylic acid hydrazide-2-acylhydrazones of the formula: ##STR1## in which R.sup.1 is hydrogen or alkyl, andR.sup.2 is alkyl or optionally substituted phenylAnd are prepared by reacting the corresponding glyoxylic acid ester 2-acylhydrazone with hydrazine hydrate. The compounds (I) are useful in preparing herbicidally active 4-amino-1,2,4-triazine-5-one compounds.
公开/授权文献
- US5647952A Chemical/mechanical polish (CMP) endpoint method 公开/授权日:1997-07-15