p-Toluenesulfonic acid monohydrate → HCID 44473400, compound

Participants

Reaction Conditions

Reaction Steps

5-(2,2-diethoxyethyl)-3-(1-(3-(2-methoxyethoxy)quinolin-6-yl)ethyl)-N-(3-methylisothiazol-5-yl)-3H-1,2,3-triazole-4-carboxamide (0.296 g, 0.53 mmol) was dissolved in dichloroethane (5 mL) and to the solution was added p-toluenesulfonic acid monohydrate (0.11 g, 0.59 mmol). The reaction mixture was heated at 100° C. overnight. The reaction mixture was diluted with dichloromethane then washed with sat. aq. sodium bicarbonate and brine. The organic layer was dried over sodium sulfate and concentrated in vacuo. The enantiomers were separated via preparative SFC (ChiralPak® AD-H, 20×250 mm, 40:60:0.2 IPA:CO2:DEA, 80 mL/min; tr 1.38 min) to yield (S)-3-(1-(3-(2-methoxyethoxy)quinolin-6-yl)ethyl)-5-(3-methylisothiazol-5-yl)-3H-[1,2,3]triazolo[4,5-c]pyridin-4(5H)-one as a pale yellow solid. On the basis of previous crystallographic data and potency recorded for related compounds in the same program, the absolute stereochemistry was assigned as the S enantiomer. MS m/z=463.2 [M+1]+. Calc'd 462.5 for C23H22N6O3S. 1H NMR (400 MHz, DMSO-d6) δ ppm 2.15 (d, 3 H) 2.39-2.44 (m, 3 H) 3.30-3.32 (m, 3 H) 3.71 (dd, 2 H) 4.23 (dd, 2 H) 6.89 (q, 1 H) 7.33 (d, 1 H) 7.64 (dd, 1 H) 7.74-7.82 (m, 3 H) 7.94 (d, 1 H) 8.34 (d, 1 H) 8.61 (d, 1 H).

Provenance & Evidence