Process for the production of iminopyrrolinones
AssigneeCiba-Geigy Corporation
InventorJean-Marie Adam
Life of this patent
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Abstract
Process for the production of iminopyrrolinones of the formula I ##STR1## wherein one of the two substituents R and R' represents a phenyl ring unsubstituted, or substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -hydroxyalkyl, C.sub.1 -C.sub.4 -alkylamino, (C.sub.1 -C.sub.4 -alkyl).sub.2 amino, halogen, nitro or cyano, whilst the other of the two substituents R and R'represents hydrogen, which process comprises reacting a chloroacetoacetanilide of the formula II cl--CH.sub.2 --CO--CH.sub.2 --CO--NH--R (II) wherein R has the meaning given above, in the presence of cyanide ions, in an inert solvent in the temperature range of 0.degree. to 80.degree. C.
Claims15
Process for the production of iminopyrrolinones of the formula I ##STR17## wherein one of the two substituents R and R' represents a phenyl ring unsubstituted, or substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -hydroxyalkyl, C.sub.1 -C.sub.4 -alkylamino, (C.sub.1 -C.sub.4 -alkyl).sub.2 amino, halogen, nitro or cyano, whilst the other of the two substituents R and R' represents hydrogen, which process comprises reacting a chloroacetoacetanilide of the formula II
- cl--CH.sub.2 --CO--CH.sub.2 --CO--NH--R (II)
- in the presence of cyanide ions, in an inert solvent in the temperature range of 0.degree. to 80.degree. C.
Dependencies are inferred from the claim text.