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Calaire Chimie SAS
| Calaire Chimie SAS Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20090312544 | METHOD FOR PREPARING LAMORTRIGINE AND ITS INTERMEDIATE 2,3-DICHLOROBENZOYL CHLORIDE - A method for preparing 3,5-diamino-6-(2,3-dichlorophenyl)-1,2,4-triazine, commonly known as lamotrigine, is disclosed. A method of preparing the intermediate, 2,3-dichlorobenzoyl chloride, by photochlorination of 2,3-dichlorobenzotrichloride followed by hydrolysis is also disclosed. The intermediate may then be used in the preparation of lamotrigine. | 12-17-2009 |