Process for the preparation of sulfentrazone

Details Process for the preparation of sulfentrazone Process for the preparation of sulfentrazone

1999-04-30

1999-11-23

Morris, Patricia L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D24912

Patent

active

059903155

ABSTRACT:
The present invention provides a process for the preparation of N-[2,4-dichloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4- triazol-1-yl]phenyl]methanesulfonamide (I) which comprises reacting 2-(5-amino-2,4-dichlorophenyl)-4-(difluoromethyl)-2,4-dihydro-5-methyl-3H- 1,2,4-triazol-3-one (II) with methanesulfonyl chloride in the presence of a catalytic amount of a source of soluble halide.

REFERENCES:
patent: 4818275 (1989-04-01), Theodoridis

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