Sodium Bicarbonate → HCID 178433699, compound

Participants

Reaction Steps

2-(2,6-Dichlorophenylamino)-6,6-dimethyl-7-hydroxy-7,8-dihydro-1H,6H-imidazo[4,5-h]isoquinoline-9-one (from Example 2) (45 mg, 0.11 mmol) was suspended in conc. H2SO4 (1 mL) and the resultant mixture was stirred at ambient temperature for 15 min. The solution was poured over ice, neutralized with NaHCO3 and filtered. The filtrate was triturated with water (10 mL) and centrifuged. The liquid was decanted, and the residual solid was triturated with methanol and centrifuged. The supernatant was decanted and the residue dried to give the title compound (35 mg, 84%). Mp >300° C.; MS (ES) 373 (MH+).

Provenance & Evidence