2-Iodo-3-methoxypyridine → 4-(3-Methoxypyridin-2-yl)-[1,4]diazepane-1-carboxylic acid tert-butyl ester

Participants

Reaction Conditions

Reaction Steps

Toluene (1.5 mL) was added to a mixture of 2-iodo-3-methoxypyridine (350 mg, 1.49 mmol), BOC-homopiperazine (0.410 mL, 2.09 mL), 2-dicyclohexylphosphino-2′-(N,N-dimethylamino)biphenyl (26 mg, 0.07 mmol), and trisdibenzylideneacetone dipalladium (20 mg, 0.02 mmol). To this suspension was added sodium t-butoxide (201 mg, 2.09 mmol) and the mixture was heated to 65° C. for 15 h. The mixture was filtered through celite, and the filter cake was washed with EtOAc. The resulting solution was washed with H2O, then brine, and dried over MgSO4. After removal of the solvent, the residue was purified on silica to give 335 mg of the title compound as a dark oil. MS (ES) m/z 308 (M+H+).

Provenance & Evidence