Process for the preparation of an n-substituted...

Details Process for the preparation of an n-substituted... Process for the preparation of an n-substituted...

C - Chemistry, Metallurgy

07

D

260/321.5

C07D 209/48 (2006.01)

Patent

CA 2008988

BASF Aktiengesellschaft O.Z. 0050/40574 Process for the preparation of an N-substituted 3,4.5.6- tetrahydrophthalimide Abstract of the disclosure: A process for the preparation of an N-substituted 3,4,5,6- tetrahydrophthalimide of the general formula I Image I in which R1 stands for hydrogen or fluorine, R2 stands for hydrogen, chlorine, bromine or C1-C4-alkyl and R3 is C1-C6-alkyl or C5-C6-cycloalkyl by reacting an aldehyde of the general formula II Image II with a phosphorane of the general formula III Image III in which Ar is a substituted or unsubstituted phenyl radi- cal, at a temperature of from -10° to +100°C and in the presence of a solvent.

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