N-substituted imido-dicarboxylic acid diaryl esters, a...

Details N-substituted imido-dicarboxylic acid diaryl esters, a... N-substituted imido-dicarboxylic acid diaryl esters, a...

C - Chemistry, Metallurgy

07

D

260/468

C07D 251/38 (2006.01)

Patent

CA 1153007

N-substituted imido-dicarboxylic acid diaryl esters, a process for their prepara- tion and their use as intermediate products Abstract of the Disclosure Novel N-substituted imido-dicarboxylic acid diaryl ester compounds of the general formula Image (I) in which R1 represents an optionally substituted aliphatic, cycloaliphatic, araliphatic, aromatic, heterocyclic radical and R2 and R3 can be identical or different and represent an optionally substituted aryl radical, and a process for their preparation characterised in that a carbamic acid aryl ester of the general formula R1-NH-CO-OR (II) in which R1 and R2 have the abovementioned meanings, is reacted with a carbonic acid aryl ester halide of the general formula X-CO-OR (III) in which R3 has the abovementioned meaning and X represents a halogen atom, optionally in the presence of a diluent, optionally at a temperature between 100 and 300°C. The new compounds (I) can be used as intermediate products for the preparation of known herbicidal active ccmpounds from the 1,3,5-triazine,2,4- (1H,3H)-dione series.

371153

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