Sodium Iodide → (3RS)-1-[(2-azatricyclo[4.3.1.14,8]undec-2-yl)carbonylmethyl]-3-tert-butoxycarbonylamino-2,3-dihydro-5-(2-fluorophenyl)-1H-1,4-benzodiazepin-2-one

Participants

Reaction Steps

To a suspension of sodium hydride (0.035 g of a 60% dispersion in mineral oil) in dry N,N-dimethylformamide (5 ml) was added dropwise a solution of (3RS)-3-tert-butoxycarbonylamino-2,3-dihydro-5-(2-fluorophenyl)-1H-1,4-benzodiazepin-2-one (0.293 g) in dry N,N-dimethylformamide (2 ml) under stirring at cooling in an ice-bath. After completion of the addition, the mixture was allowed to stand to room temperature and stirred for 2 hours. To the the mixture was added sodium iodide (0.129 g) and followed dropwise a solution of N-chloromethylcarbonyl-2-azatricyclo-[4.3.1.14,8 ]undecane (0.215 g) in dry N,N-dimethylformamide (2 ml) under stirring at cooing in an ice-bath for 1 hour and then at room temperature overnight. The reaction mixture was concentrated in vacuo. The residue was treated with ethyl acetate and water. The organic layer was washed with water and dried over sodium sulfate. Removal of the solvent gave (3RS)-1-[(2-azatricyclo[4.3.1.14,8 ]undec-2-yl)carbonylmethyl]-3-tert-butoxycarbonylamino-2,3-dihydro-5-(2-fluorophenyl)-1H-1,4-benzodiazepin-2-one (0.537 g), which was used in a following reaction step without further purification.

Provenance & Evidence