N-bromobutanimide → Methyl 6-[(5-bromo-6-phenylfuro[2,3-d]pyrimidin-4-yl)amino]hexanoate

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Reaction Steps

Put 1.75 g (5.15 mmol) 6-[(6-phenylfuro[2,3-d]pyrimidin-4-yl)amino]hexanoic acid methyl ester in 5.2 ml tetrachloromethane. At RT, add 1.054 g (5.92 mmol) N-bromosuccinimide and then heat the mixture under reflux for approx. 1 h. After cooling, concentrate by vacuum evaporation and chromatograph the residue on silica gel (solvent: cyclohexane/ethyl acetate 4:1). 0.89 g (41.2% of theor.) of the target compound is obtained.

Provenance & Evidence