| abstract |
The present invention provides a process for preparing an aromatic bromide or aromatic iodide from an aromatic amine derivative using nitrite anion and halodimethylsulfonium halide generated in situ from hydrobromic acid/DMSO or hydriodic acid/DMSO. The process for producing compounds of the formula (1) is disclosed (1) wherein X is bromine or iodine: Y is carbon or nitrogen; R 1 , R 2 , R 3 , R 4 and R 5 which may be the same or different and are selected independently from the group consisting of a hydrogen, a hologen, a C 1 -C 8 alkyl, a C 1 -C 10 alkoxy, a nitro, a formyl, an aryl, a benzyl, a C 2 -C 10 alkylcarbonyl and an arylcarbonyl, provided that adjacent groups as selected from R 1 , R 2 , R 3 , R 4 and R 5 may combine to form a ring. |