N-bromobutanimide → HCID 22600461, compound

Participants

Reaction Conditions

Reaction Steps

434.4 g (1.866 mol) of ethyl 2-methyl-6-trifluoromethylnicotinate (preparation similar to Heterocycles 129, 46, 1997) and 398.5 g (2.239 mol) of N-bromosuccinimide in 3 500 ml of carbon tetrachloride in the presence of 30.6 g (0.1866 mol) of α,α-azaisobutyronitrile are heated at 75° C., with irradiation from a 150 Watt lamp. After 3 hours, the reaction is terminated, the mixture is cooled to 15° C. and precipitated succinimide is removed by filtration. After evaporation of the solvent, the residue is distilled under reduced pressure. This gives ethyl 2-bromomethyl-6-trifluoromethylnicotinate as an oily product (260.2 g, 44.7% of theory, b.p. 74° C./0.04 mmHg).

Provenance & Evidence