发明名称 |
Process for producing chromone compound |
摘要 |
A process for producing a dicarboxylic acid compound represented by the formula (4): wherein R<SUP>1 </SUP>and R<SUP>2 </SUP>are the same or different and each represents lower alkyl and the wavy line indicates that this compound is the E- or Z-isomer or a mixture of them, characterized by reacting a compound represented by the formula (2): wherein R<SUP>1</SUP>, R<SUP>2 </SUP>and the wavy line have the same meanings as the above, and one of X<SUP>2 </SUP>and X<SUP>3 </SUP>represents hydrogen and the other represents halogen, with nitrophenol represented by the formula (3): in the presence of a base; a process for producing a nitrochromone compound represented by the formula (5): wherein R<SUP>1 </SUP>has the same meaning as the above, characterized by reacting the dicarboxylic acid compound or carboxylic acid thereof with an acid; a process for producing an aminochromone compound which comprises reducing the nitrochromone compound; and a process for producing an amidochromone compound which comprises acylating the aminochromone compound are provided.
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申请公布号 |
US2005085664(A1) |
申请公布日期 |
2005.04.21 |
申请号 |
US20040506119 |
申请日期 |
2004.08.27 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LMITED |
发明人 |
HIBINO HIROAKI;OHTSUKA SUSUMU;MIYAMOTO YASUNOBU;YOSHIDA TOMOYASU;OKUMOTO ITSUO |
分类号 |
C07C205/37;C07D311/24;(IPC1-7):C07C25/53 |
主分类号 |
C07C205/37 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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