N-bromobutanimide → 5-(4'-bromomethylbiphenyl-2-yl)-1-(4-nitrophenyl)-1H-tetrazole

Participants

Reaction Steps

A mixture of compound D (8.0 g; 21 mM), N-bromosuccinimide (4.53 g; 25 mM) and azo(bisisobutyronitrile) (73 mg) in 1,1,1-trichloroethane (methyl chloroform) (50 mL) was heated under reflux for 4 hours. The mixture was cooled to ambient temperature, washed with water (3×50 mL), and the suspended solid collected by filtration to give 5-(4'-bromomethylbiphenyl-2-yl)-1-(4-nitrophenyl)-1H-tetrazole (E) (7.3 g), m.p. 192°-195° C.; NMR (CDCl3): 4.4(2H, s), 6.52(2H, d), 6.85(2H, d), 7.07(2H, d), 7.4(1H, d) 7.7 (2H,m), 7.9(1H, d).

Provenance & Evidence