BENSAMIDER OCH FORFARANDE FOR FRAMSTELLNING DERAV

摘要

1505633 Amides MALLINCKRODT Inc 17 Dec 1976 [22 Dec 1975 20 Oct 1976] 52802/76 Heading C2C The invention comprises compounds of the formula where R1 and R2 are H or C 1 -C 6 alkyl and R3 and R4 are alkanoyl or alkoxyalkanoyl of up to 6 carbon atoms. The compounds may be prepared by hydrogenating a 3,5-dinitrobenzamide and acylating the 3,5 - diaminobenzamide formed. The compounds may be converted to compounds of the formula by treatment in an aqueous medium with an iodinating agent under acid conditions.