Water → HCID 22175767, compound

Participants

Reaction Steps

A solution of tert-butyl(4-butoxy-6-hydroxy-2-isobutyl-1-oxo-1,2-dihydro-3-isoquinolinyl)methylcarbamate (0.42 g, 1 mmol), 2-iodoacetamide (0.27 g, 1.5 mmol) and 1,8-diazabicyclo[5.4.0]-7-undecene (0.22 mL, 1.5 mmol) in N,N-dimethylformamide (10 mL) was stirred at 80° C. for 10 h. The reaction mixture was poured into water and extracted with ethyl acetate. The extract was washed with brine, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The obtained crystals were recrystallized from ethyl acetate-diisopropyl ether to give tert-butyl[6-(2-amino-2-oxoethoxy)-4-butoxy-2-isobutyl-1-oxo-1,2-dihydro-3-isoquinolinyl]methylcarbamate (0.37 g, 78.7%) as crystals.

Provenance & Evidence