Diisopropylethylamine → HCID 22648122, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 7-amino-5-(2-chlorophenyl)-1-(2,6-dichlorophenyl)-3-(4-methoxybenzyl)-3,4-dihydroquinazolin-2(1H)-one (150 mg, 0.278 mmol) (COMPOUND CCC4, STEP A) in 4 mL of THF cooled to 0° C. was added 1-methyl-1H-imidazole-4-sulfonyl chloride (100 mg, 0.556 mmol). A few crystals of 4-(dimethylamino)pyridine and diisopropylethylamine (53.9 mg, 0.417 mmol) were added. The resulting reaction mixture was stirred at 0° C. for 20 min, then heated to 70° C. for ca. 7.5 h. The reaction mixture was cooled to rt and partitioned between ethyl acetate and 1M aqueous HCl (added brine to improve the layer separation). The organic layer was concentrated under reduced pressure and triturated sequentially with Et2O, methanol, and CH2Cl2 to yield the N-[5-(2-chlorophenyl)-1-(2,6-dichlorophenyl)-3-(4-methoxybenzyl)-2-oxo-1,2,3,4-tetrahydroquinazolin-7-yl]-1-methyl-1H-imidazole-4-sulfonamide. Mass spectrum (ESI) 682.0 (M+1).

Provenance & Evidence