Trifluoroacetic acid → HCID 59472160, compound

Participants

Reaction Steps

tert-Butyl N-tert-butoxycarbonyl-N-[5-(4-cyano-3-pyridyl)-3-(5-phenyl-1,3,4-oxadiazol-2-yl)pyrazin-2-yl]carbamate (140 mg, 0.2585 mmol) in dichloromethane (2 mL) was treated with TFA (2 mL, 25.96 mmol) and stirred at room temperature for 1 h. The mixture was concentrated under reduced pressure, re-dissolved in MeOH/DCM and concentrated (2×), dissolved MeOH/DCM and passed through bicarbonate cartridge, concentrated under reduced pressure to give a yellow solid. The solid was triturated with acetonitrile and filtered to give yellow solid (83 mg, 94%); 1H NMR (400.0 MHz, DMSO) d 7.69-7.77 (m, 3H), 8.07 (d, 1H), 8.24-8.26 (m, 2H), 7.80-8.40 (br s, 2H), 8.90 (d, 1H), 9.09 (s, 1H) and 9.47 (s, 1H) ppm; MS (ES+) 342.16

Provenance & Evidence