abstract |
The invention relates to a process for the preparation of 5-amino-benzoylbenzofuran derivatives of the formula (I) wherein R1 is hydrogen or alkyl and R2 is hydrogen, alkyl, alkoxy or dialkylaminoalkoxy, by reduction of a 5-nitro-benzofuran derivative of formula (II) by means of a hydrogen transfer agent, in the presence of palladium-carbon as catalyst and in an ether or a mixture of ether as solvent . |