Diisopropylethylamine → di-tert-butyl (6-{[(4-bromo-1-trityl-1H-imidazol-2-yl)(5-ethyl-2-fluoro-3-methoxyphenyl)methyl]amino}isoquinolin-1-yl)imidodicarbonate

Participants

Reaction Conditions

Reaction Steps

To a solution of the chloro intermediate (350 mg, 0.594 mmol) in 5 mL CH3CN and 2 mL CH2Cl2 at rt, was added DIEA (0.207 mL, 1.19 mmol), di-tert-butyl (6-aminoisoquinolin-1-yl)imidodicarbonate (235 mg, 0.653 mmol). The mixture was stirred at rt for 18 h and at 40° C. for 3 h, then was diluted with EtOAc. The organic phase was washed with H2O and brine, dried (Na2SO4) and concentrated. The crude product was purified by flash chromatography (0 to 60% EtOAc/hexanes gradient) to afford 425 mg of Intermediate 206.4 as a colorless residue.

Provenance & Evidence