发明授权
US5286881A Process for producing benzodifuranone compounds useful for dyeing or
printing hydrophobic fiber materials
失效
用于染色或印刷疏水性纤维材料的苯并二呋喃酮化合物的制备方法
- 专利标题： Process for producing benzodifuranone compounds useful for dyeing or printing hydrophobic fiber materials
- 专利标题（中）： 用于染色或印刷疏水性纤维材料的苯并二呋喃酮化合物的制备方法
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申请号： US953767申请日： 1992-09-30
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公开(公告)号： US5286881A公开(公告)日： 1994-02-15
- 发明人: Junichi Sekihachi , Jun Yamamoto , Yutaka Kayane
- 申请人： Junichi Sekihachi , Jun Yamamoto , Yutaka Kayane
- 申请人地址： JPX Osaka
- 专利权人： Sumitomo Chemical Company Limited
- 当前专利权人： Sumitomo Chemical Company Limited
- 当前专利权人地址： JPX Osaka
- 优先权： JPX2-5223 19900112
- 主分类号： C07D493/04
- IPC分类号： C07D493/04 ; C09B57/00 ; C07D307/91 ; C07D403/12 ; C07D405/12 ; C07D495/02
摘要：
A benzodifuranone compounds of the formula, ##STR1## wherein R.sup.1 and R.sup.2 are each independently a naphthyl group or an unsubstituted or substituted phenyl group, which is useful for dyeing or printing hydrophobic fiber materials, is prepared in high purity and high yield by allowing benzofuran compounds of the formula, ##STR2## wherein R.sup.1 is as defined above, to react with acetonitrile compounds of the formula, ##STR3## wherein R.sup.2 is as defined above, and then carrying out an oxidation reaction to give the benzodifuranone compound.