[(Diphenylmethylene)amino]acetonitrile → HCID 117858259, compound

Participants

Reaction Conditions

Reaction Steps

18 g (81.72 mmol) of [(diphenylmethylene)amino]acetonitrile were initially charged in 500 ml of abs. THF, and 39.22 ml (98.06 mmol) of n-butyllithium (2.5 N in hexane) were added at −78° C. under argon, and the mixture was stirred at −78° C. for a further 15 min. Subsequently, the reaction solution was warmed up to 0° C. 17.25 g (89.89 mmol) of 1,1-difluoro-2-iodoethane were added dropwise to the reaction solution, which was stirred at 0° C. for a further 15 min. The reaction solution was quenched with water at 0° C., ethyl acetate was added and the mixture was washed three times with semisaturated aqueous sodium chloride solution. The combined aqueous phases were reextracted twice with ethyl acetate. The combined organic phases were dried over sodium sulphate, filtered and concentrated by rotary evaporation. The residue was purified by means of silica gel chromatography (eluent:dichloromethane/cyclohexane 1/1). 13.57 g of the target compound were obtained (49% of theory, 84% purity).

Provenance & Evidence