Trifluoroacetic acid → Trifluoroacetate

Participants

Reaction Steps

As shown in step 4-iii of Scheme 4, to a solution of compound 1007 (141 mg, 0.295 mmol) in CH2Cl2 (2.5 mL) was added TFA (656 mg, 443 μL, 5.75 mmol) at RT. The resulting black solution was stirred for 2 hours and then the reaction was quenched by the addition of saturated NaHCO3 until the black color gradually turned into an orange color. The reaction mixture was extracted with CH2Cl2 (3×) and the combined organic extracts were dried over Na2SO4 and evaporated to dryness to provide N1-(7-(8-oxa-3-azabicyclo[3.2.1]octan-3-yl)quinoxalin-5-yl)cyclohexane-1,4-diamine, trifluoroacetate (compound 1008): ESMS (M+H+)=354.20. This material was used in subsequent reactions without any further purification.

Provenance & Evidence