Hexachloroethane → [1-(6-Fluoro-[1,2,4]triazolo[4,3-a]pyridin-3-yl)-1-methyl-ethyl]-dimethyl-amine

Participants

Reaction Steps

To a solution of Intermediate 76a (195 mg, 0.81 mmol), Ph3P (426 mg, 1.62 mmol) and Et3N (452 □L, 3.25 mmol) in THF (9.00 mL) at 0° C. was added hexachloroethane (385 mg, 1.62 mmol). The reaction was stirred at RT overnight then partitioned between EtOAc and water. The aqueous layer was then extracted with EtOAc (3×). The combined organic layers were washed with brine, dried (MgSO4), filtered and evaporated in vacuo. The residue was dissolved in MeOH and loaded onto an SCX-2 cartridge, which was washed with MeOH and eluted with 2M NH3 in MeOH. The reaction showed 50% conversion so was re-submitted to the reaction conditions overnight at 50° C. The workup and purification procedures were repeated to give the title compound (153 mg, 85%). 1H NMR (300 MHz, CDCl3): 1.60 (6H, s), 2.20 (6H, s), 7.16 (1H, ddd, J 9.9, 7.4, 2.4), 7.71 (1H, ddd, J 9.9, 5.0, 0.8), 8.89 (1H, ddd, J 4.4, 2.4, 0.8).

Provenance & Evidence