Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1997-03-05
1998-03-17
Burn, Brian M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
564437, C02C20910
Patent
active
057288810
ABSTRACT:
A process is provided for preparing 2,6-dinitro-N,N-dipropyl-4-(trifluoromethyl)benzenamine from 4-chlorotrifluoromethylbenzene. The process includes a two stage nitration and an amination step. Ethylene dichloride is utilized as a diluent and solvent in the nitration steps. Spent acid from the first nitration is reconstituted with sulfur trioxide for use in the second nitration. Spent acid from the second nitration is used directly in the first nitration and evaporation is used to remove nitrosoamines from the final trifluralin product.
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Golinski Miroslaw J.
Kwiatkowski Stefan
Lawrence Lowell J.
Pupek Krzysztof
Smith Paul D.
Burn Brian M.
SRM Chemical, Ltd. Co.
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