发明名称 |
PROCESS FOR THE PREPARATION OF 4-ALKOXY-3-HYDROXYPICOLINIC ACIDS |
摘要 |
4,6-Dibromo-3-hydroxypicolinonitrile may be prepared from furfural in a series of chemical steps selected from cyano-amination, amine salt formation and bromination-rearrangement. 4-Alkoxy-3-hydroxypicolinic acids may be conveniently prepared from 4,6-dibromo-3-hydroxypicolinonitrile in a series of chemical steps selected from bromo substitution, nitrile hydrolysis and halogen reduction. |
申请公布号 |
CA2954167(A1) |
申请公布日期 |
2016.01.14 |
申请号 |
CA20152954167 |
申请日期 |
2015.07.08 |
申请人 |
DOW AGROSCIENCES LLC |
发明人 |
RENGA, JAMES M.;ZHU, YUANMING;WHITEKER, GREGORY T.;CHOY, NAKYEN |
分类号 |
C07D213/65;C07D213/79;C07D213/84 |
主分类号 |
C07D213/65 |
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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