发明名称 |
A PROCESS FOR THE ECO-FRIENDLY PREPARATION OF 3??5-DIBROMO-4-HYDROXYBENZONITRILE |
摘要 |
A highly pure 3,5-dibromo-4-hydroxybenzonitrile (bromoxynil) has been prepared in high yield from 4-hydroxybenzonitrile using eco-friendly brominating reagent comprising of 2:1 mole ratio of bromide to bromate salts in aqueous acidic medium without any catalyst under ambient conditions with no work up procedure. The product 3,5-dibromo-4-hydroxybenzonitrile was obtained in 91-99% yield with melting point 189-191° C. and more than 99% purity by gas chromatographic analysis without any purification. |
申请公布号 |
KR20110120332(A) |
申请公布日期 |
2011.11.03 |
申请号 |
KR20117021988 |
申请日期 |
2010.02.25 |
申请人 |
COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH |
发明人 |
ADIMURTHY SUBBARAYAPPA;RAMACHANDRAIAH GADDE;JOSHI GIRDHAR;PATIL RAJENDRA;GANDHI MAHESHKUMAR RAMNIKLAL;SUBBAREDDY MALLAMPATI;MAITI PRATYUSH |
分类号 |
C07C253/30;C07C253/34;C07C255/53 |
主分类号 |
C07C253/30 |
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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