Sodium t-butoxide → Trifluoroacetic acid

Participants

Reaction Steps

A solution of 6-benzyl-3-chloro-N-(2,2-difluoroethyl)-5,6,7,8-tetrahydropyrido[3,4-b]pyrazin-2-amine TFA salt (150 mg, 0.331 mmol), 4-(2,4-difluorophenoxyl)piperidine hydrochloride (99 mg, 0.398 mmol), Pd2(dba)3 (15.2 mg, 0.017 mmol), BINAP (20.63 mg, 0.033 mmol), and sodium tert-butoxide (96 mg, 0.994 mmol), in toluene (1104 μL) was stirred at 90° C. overnight. The solvent was removed and the crude product diluted in DMF, filtered through a hydrophilic PTFE 0.45 μm filter (Millipore® Millex-LCR), and purified via HPLC Method A to give 6-benzyl-N-(2,2-difluoroethyl)-3-(4-(2,4-difluorophenoxyl)piperidin-1-yl)-5,6,7,8-tetrahydropyrido[3,4-b]pyrazin-2-amine as a TFA salt (152 mg).

Provenance & Evidence