Invention Application
US20170044105A1 PROCESS FOR THE PREPARATION OF 4-ALKOXY-3-HYDROXYPICOLINIC ACIDS
有权
制备4-烷氧基-3-羟基吡啶羧酸的方法
- Patent Title: PROCESS FOR THE PREPARATION OF 4-ALKOXY-3-HYDROXYPICOLINIC ACIDS
- Patent Title (中): 制备4-烷氧基-3-羟基吡啶羧酸的方法
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Application No.: US15339190Application Date: 2016-10-31
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Publication No.: US20170044105A1Publication Date: 2017-02-16
- Inventor: James M. Renga , Yuanming Zhu , Gregory T. Whiteker , Nakyen Choy , Kenneth E. Stockman
- Applicant: DOW AGROSCIENCES LLC
- Main IPC: C07D213/803
- IPC: C07D213/803

Abstract:
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.
Public/Granted literature
- US09718783B2 Process for the preparation of 4-alkoxy-3-hydroxypicolinic acids Public/Granted day:2017-08-01
Information query
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