Triethylamine → isobutyl {2-[2-(dimethylamino)ethyl]-1,3-dioxo-2,3-dihydro-1H-dibenzo[de,h]isoquinolin-11-yl}carbamate

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Reaction Steps

100 mg of 11-amino-2-[2-(dimethylamino)ethyl]-1H-dibenzo[de,h]isoquinoline-1,3(2H)-dione (obtained in example 3) (0.30 mmole) were dissolved in 6 ml of dichloromethane. 85 μl (2 molar equivalent) of triethylamine and 78 μl (2 molar equivalent) of isobutyl chloroformate were respectively added. The reaction mixture was maintained at room temperature for 3 hours. The solvent was then evaporated under reduced pressure and the residue was submitted to a flash chromatography (SiO2, CH2Cl2/MeOH 95/5) to provide 92 mg (yield=7%) of the desired product (formula shown hereinabove) as an orange powder which was characterized as follows:

Provenance & Evidence