NOVEL PROCESS FOR THE PREPARATION OF 2,5-DICHLORO-3-(5-(3,4-DIHYDROXY-5-NITROPHENYL)-1,2,4-OXADIAZOL-3-YL)-4,6-DIMETHYLPYRIDINE-1-OXIDE

The present invention relates to a novel process for the preparation of 2,5-dichloro-3-(5-(3,4-dihydroxy-5-nitrophenyl)-1,2,4-oxadiazol-3-yl)-4,6-dimethylpyridine-1-oxide of formula (I)The present invention also relates to the novel intermediate compounds of formula (V), formula (VII), and their pro...

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Hauptverfasser: KESHAVAREDDY, Navin Kumar Reddy, SAGYAM, Rajeshwar Reddy, BAKTHAVACHALAM, Ananthan, SRINIVASAN, Thirumalai Rajan, SAJJA, Eswaraiah
Format: Patent
Sprache:eng
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Zusammenfassung:The present invention relates to a novel process for the preparation of 2,5-dichloro-3-(5-(3,4-dihydroxy-5-nitrophenyl)-1,2,4-oxadiazol-3-yl)-4,6-dimethylpyridine-1-oxide of formula (I)The present invention also relates to the novel intermediate compounds of formula (V), formula (VII), and their processes for the preparation thereof.The present invention also relates to the use of compounds of formula (V), formula (VII) intermediate in the preparation of 2,5-dichloro-3-(5-(3,4-dihydroxy-5-nitrophenyl)-1, 2, 4-oxadiazol-3-yl)-4, 6-dimethylpyridine-1-oxide of formula (I).