Benzoyl Peroxide → 10,11-Dihydro-10-hydroxy-5H-dibenz[b,f]azepine-5-carbonitrile

Participants

Reaction Conditions

Reaction Steps

190 ml of chlorobenzene and 25 g of (I) are loaded into a 500 ml pyrex round-bottom flask, under nitrogen. Afterwards, 21.2 g of N-bromosuccinimide and 2.2 g of dibenzoylperoxide are added and the mixture is heated to 85-90° C., keeping this temperature for 1.5 hours. 150 ml of water and 5 g of PEG 6000 are added, heating to 85°-90° C. for 2 hours. After decanting at 60° C., water is removed and the organic phase is washed with further water (2×100 ml). Chlorobenzene is evaporated off under vacuum at 5 mm/Hg and the residue is taken up with 50 ml of ethyl acetate. The mixture is cooled to 0° C. for 2 hours, filtered and dried at 60° C. for 4 hours, to obtain 14 g of (VI), m.p. 111-112° C., with good purity.

Provenance & Evidence