Potassium Carbonate → HCID 49848668, compound

Participants

Reaction Steps

To a solution of 5-(5-chloromethyl-[1,2,4]oxadiazol-3-yl)-7-methyl-2-(4-trifluoromethoxybenzyl)-2,3-dihydroisoindol-1-one (100 mg, 0.228 mmol) in MeCN (4 mL) was added K2CO3 (95 mg, 0.684 mmol) and (1s,4s)-2,5-diaza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester (90 mg, 0.451 mmol). After 48 hours the mixture was diluted with water, then extracted with EtOAc. The organic phase was washed with brine, dried (Na2SO4), filtered, and concentrated to a yellow oil. This residue was dissolved in 1:1 TFA/CH2Cl2 (6 mL) for 30 minutes, then the reaction mixture was concentrated and basified with NaHCO3 to pH˜9-10. The product was extracted with CH2Cl2. The organic phase was washed with brine, dried (Na2SO4), filtered, and concentrated. The residue was purified by column chromatography on silica (2-8% 2M NH3 in MeOH/CH2Cl2) to provide 5-[5-(2,5-diazabicyclo[2.2.1]hept-2-ylmethyl)-[1,2,4]oxadiazol-3-yl]-7-methyl-2-(4-trifluoromethoxybenzyl)-2,3-dihydroisoindol-1-one as a light yellow solid (83 mg). 1H NMR (300 MHz, CDCl3) δ 7.95 (s, 1H), 7.91 (s, 1H), 7.34 (d, 2H), 7.18 (d, 2H), 4.77 (s, 2H), 4.28 (s, 2H), 4.05 (dd, 2H), 3.57 (d, 2H), 3.20 (d, 1H), 3.13 (dd, 1H), 2.88 (dd, 1H), 2.79 (s, 3H), 2.61 (d, 1H), 1.86 (d, 1H), 1.64 (d, 1H).

Provenance & Evidence