发明名称 |
PROCESS FOR PRODUCING HALOGENATED beta -LACTAM COMPOUND |
摘要 |
A process for producing a halogenated beta -lactam compound represented by general formula (4), characterized by reacting a beta -lactam-derived amino compound represented by general formula (1) with nitrous acid or a nitrite in the presence of halogen molecules under acid conditions while keeping the reactants in an aqueous slurry state to obtain the target compound. In formula (1) n is an integer of 0 to 2; and A represents formula (2) or (3), wherein R<1> and R<2> are the same or different and each is hydrogen, halogeno, C1-3 alkyl, C2-4 alkenyl, C2-4 alkynyl, a nucleophilic group, or CH2R<3>, where R<3> represents halogeno or a nucleophilic group. In formula (4) A is the same as the above; X<1> represents hydrogen or halogeno; and X<2> represents halogeno.
|
申请公布号 |
WO9952912(A1) |
申请公布日期 |
1999.10.21 |
申请号 |
WO1999JP01736 |
申请日期 |
1999.04.02 |
申请人 |
OTSUKA KAGAKU KABUSHIKI KAISHA;SHIMABAYASHI, AKIHIRO;KAWAHARA, ICHIROU;YAGUCHI, SHIGETOSHI;ASAI, HIROAKI |
发明人 |
SHIMABAYASHI, AKIHIRO;KAWAHARA, ICHIROU;YAGUCHI, SHIGETOSHI;ASAI, HIROAKI |
分类号 |
C07D499/87;C07D499/00;C07D499/04;C07D499/10;C07D499/86;C07D499/865;C07D499/897;C07D501/00;C07D501/04;C07D501/16;C07D501/59;(IPC1-7):C07D499/10 |
主分类号 |
C07D499/87 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|