| 发明名称 |
METHOD FOR PRODUCING 2-HYDROXYBENZOIC ACID DERIVATIVES |
| 摘要 |
<p>The present invention relates to a method for producing 2-hydroxybenzoic acid derivatives represented by the formula (3) below through the following reactions: (see formula 1) .fwdarw. (see formula 2) .fwdarw. (see formula 3), where the compound of formula (I ) reacts with a Lewis acid, wherein said Lewis acid is BF3, TiCI4 or AICl3. The invention further relates to a method for selectively demethylating the 2-methoxy group of an aromatic carboxylic acid, and providing an industrial method for producing an aminothiazole derivative useful as a medicine.</p> |
| 申请公布号 |
CA2838135(C) |
申请公布日期 |
2016.01.19 |
| 申请号 |
CA20052838135 |
申请日期 |
2005.08.23 |
| 申请人 |
ZERIA PHARMACEUTICAL CO., LTD. |
发明人 |
NAGASAWA, MASAAKI;ASAMI, KAZUYASU;NAKAO, RYU;TANAKA, NOBUYUKI;AIDA, YOSHIYUKI |
| 分类号 |
C07C67/08;C07C51/377;C07C65/21;C07C69/84 |
主分类号 |
C07C67/08 |
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