Ammonia → 6-Fluoro-3-((R)-3-triisopropylsilanyloxy-pyrrolidin-1-yl)-[1,2,4]triazolo[4,3-a]pyridine

Participants

Reaction Steps

Triisopropylsilyl trifluoromethanesulfonate (280 mg, 0.919 mmol) was added to a solution of Intermediate 38a (170 mg, 0.766 mmol) and Et3N (116 mg, 1.14 mmol) in a DMF (3 mL) and the mixture stirred at RT for 1 h. The reaction mixture was applied to an SCX-2 cartridge (10 g) and washed with MeOH. The product was eluted with 2M NH3 in MeOH; concentration in vacuo gave a residue. FCC, using 0-10% [2M NH3 in MeOH] in DCM, gave the title compound (260 mg, 90%). LCMS (Method 3): Rt 4.26 min, m/z 379 [MH+].

Provenance & Evidence