发明名称 |
METHOD OF PRODUCING 2-METHYL-1,4-NAPHTHOQUINONE |
摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to a method of producing 2-methyl-1,4-naphthoquinone (menadione, vitamin K3) which is widely used as a preparation for improving blood clotting. The method involves oxidation of 2-methylnaphthalene-containing material with hexavalent chromium compounds in an acidic medium. The 2-methylnaphthalene-containing material used is a methylnaphthalene fraction sampled in temperature interval 235-245C with distillation of stillage bottoms formed when producing naphthalene from the naphthalene fraction of coal tar. ^ EFFECT: invention enables to obtain an end product using a simple and highly efficient method with higher utilisation of starting material. ^ 2 cl, 3 ex |
申请公布号 |
RU2420512(C1) |
申请公布日期 |
2011.06.10 |
申请号 |
RU20090145323 |
申请日期 |
2009.12.07 |
申请人 |
UCHREZHDENIE ROSSIJSKOJ AKADEMII NAUK INSTITUT ORGANICHESKOGO SINTEZA IM. I.JA. POSTOVSKOGO URAL'SKOGO OTDELENIJA RAN |
发明人 |
EREMIN DMITRIJ VLADIMIROVICH;PETROV LEV ALEKSEEVICH |
分类号 |
C07C46/04;C07C50/12 |
主分类号 |
C07C46/04 |
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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