A PROCESS FOR OBTAINING INDOXACARB CRYSTALS WITH SPECIFIC PURITY AND ENANTIOMERIC RATIO

A PROCESS FOR OBTAINING INDOXACARB CRYSTALS WITH SPECIFIC PURITY AND ENANTIOMERIC RATIO

The present disclosure relates to a process for obtaining an enantiomeric mixture of Indoxacarb crystals having purity in the range of 95% to 99.5%, wherein the enantiomeric mixture comprises crystals of R-isomer and S-isomer. The S-isomer crystals are present in an amount in the range of 75% to 90%...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHENOY, Diwakar K, SHET, Laxminarayan S, SAMANGADKAR, Yatin S, SALVI, Manoj V, GHARDA, Keki Hormusji
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The present disclosure relates to a process for obtaining an enantiomeric mixture of Indoxacarb crystals having purity in the range of 95% to 99.5%, wherein the enantiomeric mixture comprises crystals of R-isomer and S-isomer. The S-isomer crystals are present in an amount in the range of 75% to 90% of the enantiomeric mixture. The raw material used is crude Indoxacarb comprising impurities in an amount in the range of 10 wt.% to 15 wt.%. The process of the present disclosure is simple, economical, gives relatively high purity of Indoxacarb crystals than crude Indoxacarb and avoids deterioration in the amount of the active S-isomer.