Treatment of the salts of primary nitroparaffins with halogens generally gives the monohalonitro compound contaminated with greater or lesser amounts of the dihalonitro compound and the starting nitroparaffin. In 1960 Trippett and Walker'reported that pure 1- bromo-1-nitroalkanes could be prepared by addition of the dry, finely powdered, sodium or ammonium salt of the nitro compound to bromine at 0" C; they obtained 65-70% yields of ...
