• Korean Journal of Environmental Agriculture
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• v.8 no.2
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• pp.136-141
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• 1989

An alternative method for the synthesis of sulfonylurea derivatives, some of which considered to be a new recommendable herbicides, with oxalylchloride was investigated. Sulfonamides read with oxalylchloride to sulfonyloxamoylchlorides, which convert easily under pyrolysis to sulfonylisocyanates. The isocyanates react further with amines to yield corresponding sulfonylurea derivative quantitatively.

• YAKHAK HOEJI
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• v.39 no.1
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• pp.36-40
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• 1995

In order to investigate the biological activity of protoberberine derivatives, they were synthesized four derivatives (1-4) of 7,8 adduct of cycloberberine, two derivatives (5, 6) treated with alkylamine or phenylamine, four compounds (7, 8) and (9, 10) adduct with 1,3-dichloroacetone and oxalychloride. Antibacterial activity of these synthesized compounds was tested.

• The Korean Journal of Pesticide Science
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• v.6 no.2
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• pp.105-109
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• 2002

Synthetic method of a new benzoylphenylurea insecticide, DBI-3204 [1-(2,6-Difluorobenzoyl)-3-(3,5-bistrifluoromethyl-2-chlorophenyl) urea] was established for manufactural production; 2,6-Difluorobenzoylisocyanate was synthesized by the reaction of 2,6-difluorobenzamide with oxalylchloride in 95% yields, the reaction of 3,5-bis(trifluoromethyl)aniline with N-chlorosuccinimde gave 3,5-bis (trifluoromethyl)-2-chloroaniline in 92% yields, and DBI-3204 was got from 2,6-difluorobenzoylisocyanate and 3,5-bis(trifluoromethyl)-2-chloroaniline in 90% yields. All the process was simplified by using the same reaction solvent, carbontetrachloride.