Methyl p-toluenesulfonate → HCID 86683472, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 4-(7-(6-cyano-5-(trifluoromethyl)pyridin-3-yl)-8-oxo-6-thioxo-5,7-diazaspiro-[3.4]octan-5-yl)benzenesulfonamide (Compound 81, 97 mg, 0.20 mmol), methyl tosylate (37 mg, 0.20 mmol), and Cs2CO3 (65 mg, 0.20 mmol) in acetonitrile (1 mL) was heated at 50° C. for 20 h in a sealed tube. After being cooled room temperature, the reaction mixture was diluted with water and extracted with EtOAc (3×). The organic layer was dried over magnesium sulfate and concentrated to give a residue that was purified by column chromatography on silica gel (hexanes:DCM:acetone=5:9:1) to afford 30 mg of 4-(7-(6-cyano-5-(trifluoromethyl)pyridin-3-yl)-8-oxo-6-thioxo-5,7-diazaspiro[3.4]-octan-5-yl)-N-methylbenzenesulfonamide as a white solid. 1H NMR (400 MHz, CDCl3) δ 9.11 (s, 1H), 8.37 (s, 1H), 8.10 (dd, 2H), 7.58-7.49 (m, 2H), 4.52 (d, 1H), 2.80 (m, 3H), 2.78-2.69 (m, 2H), 2.63-2.47 (m, 2H), 2.29 (m, 1H), 1.74 (m, 1H). LCMS [M+1+Na]+ 518.0.

Provenance & Evidence