Acetone → 3-{8-(2,6-difluorophenyl)-2-[(1H-imidazol-2-ylmethyl)amino]-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-4-yl}-4-methyl-N-1,3-thiazol-2-ylbenzamide benzenesulfonate

Participants

Reaction Conditions

Reaction Steps

Acetone (200 uL) was added to free-base version of 3-{8-(2,6-difluorophenyl)-2-[(1H-imidazol-2-ylmethyl)amino]-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-4-yl}-4-methyl-N-1,3-thiazol-2-ylbenzamide (10.4 mg), and the resulting mixture was heated to 50° C. Benzenesulfonic acid was added (1.0 equivalent; 1N in water) resulting in a clear solution. The mixture was cooled to room temperature and shook overnight. The product was filtered, washed with acetone, and dried for several hours in a vacuum oven at 50° C. with a slow nitrogen bleed. The yield was 83.2% (5.8 mg) of title compound with a melting onset at 317° C. (determined by DSC).

Provenance & Evidence