贱人就是矫情 英文专利名称：METHOD FOR PRODUCING
DICHLOROPYRAZINE DERIVATIVE
发明人：HARA, Tamio,NORIMATSU,
railroadNaoki,KURUSHIMA, Hiroaki,KANO, Takuya 申请号：EP10735589.3
申请日：20100114
公开号：EP2392566B1
公开日：
中考英语
20160302
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摘要：A method for producing a hydroxypyrazine derivative reprented by formula (I) (wherein R reprents a halogen atom), the method including reacting a pyrazine derivative reprented by formula (III) (wherein R reprents a nitrile group, an N-unsubstituted or N-substituted carbamoyl group, an ester group or a carboxyl group, M reprents a cation capable of forming a salt, and n reprents a number corresponding with the valence of M) with a halogenating agent. Also, a method for producing a dichloropyrazine derivative reprented by formula (II) (wherein R reprents a nitrile group, an N-unsubstituted or N-substituted carbamoyl group, an ester group, a carboxyl group, or a group formed as a result of a change in the functional group of R during chlorination), the method including reacting the hydroxypyrazine derivative (I) with a chlorinating agent. According to the prent invention, a dichloropyrazine derivative can be produced efficiently at low cost, and a hydroxypyrazine derivative that functions as a production intermediate for the dichloropyrazine derivative can be produced efficiently at low cost.yes and no
申请人：NIPPON SODA CO
vampire什么意思
许国璋英语地址：JP考研数学三
化眼妆步骤国籍：JP
代理机构：Cabinet Plasraud 更多信息请下载全文后查看
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