N-bromobutanimide → 10-Biphenyl-4-yl-7-bromo-12,12-dimethyl-10,12-dihydro-10-azaindeno[2,1-b]fluorene

Participants

Reaction Steps

17.5 g (40.18 mmol) of 10-biphenyl-4-yl-12,12-dimethyl-10,12-dihydro-10-azaindeno[2,1-b]fluorene are suspended in 450 ml of acetonitrile, and 7.15 g (40.18 mmol) of N-bromosuccinimide are added in portions at −20° C. at such a rate that the reaction temperature does not rise above −20° C. The mixture is stirred for a further 18 h, during which the temperature is allowed to come to RT. The reaction mixture is subsequently evaporated in a rotary evaporator, dissolved in dichloromethane and washed with water. The residue is dried, evaporated and subsequently recrystallised from toluene to a purity of 99.3%, giving 10.9 g (53%) of the product as a white solid.

Provenance & Evidence