Phenyl substituted pyrrolinones

Details Phenyl substituted pyrrolinones Phenyl substituted pyrrolinones

C - Chemistry, Metallurgy

07

D

260/322

C07D 207/38 (2006.01) C07D 487/04 (2006.01)

Patent

CA 1260484

Phenyl Substituted Pyrrolinones Abstract of the Disclosure The invention relates to pyrrolinones of formula (1) Image (1) wherein R1 is an alkyl group containing at least 2 carbon atoms, an aralkyl group, an isocyclic or heterocyclic aromatic radical and R is an alkyl or aryl group. The invention also relates to aminodicarboxylates of formula (2) (2) Image wherein R1 is as defined in claim 1 and R and R' are the same or different and are alkyl or aryl. The aminodicarboxylates of formula (2) are prepared by condensing a disuccinate of the formula R'OOCCH2CH2COOR with a nitrile of the formula R1CN, in the presence of a strong base and zinc chloride. The pyrrolinones of formula (1) are obtained by reacting the aminodicarboxylates of formula (2) in the presence of a strong base in an organic solvent. The compounds of formulae (1) and (2) are valuable intermediates for pigments.

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