发明名称 PROCESS FOR PREPARING DIHALOPYRIDINES
摘要 <p>Processes for manufacturing dihalopyridines without the use of copper salts are described. Additional processes for manufacturing dihalopyridines from niacinamide are described. In a preferred embodiment the dihalopyridine is prepared by adding a first liquid mixture comprising a metal nitrite salt to a second liquid mixture comprising a 3-amino-2- halopyridine, a hydrohalic acid and an iron(lll) compound.</p>
申请公布号 WO2013181592(A3) 申请公布日期 2014.02.20
申请号 WO2013US43703 申请日期 2013.05.31
申请人 VERTELLUS SPECIALTIES INC. 发明人 MURUGAN, RAMIAH
分类号 C07D213/61 主分类号 C07D213/61
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