Trifluoroacetic acid → (R)-2-((2-cyano-3-nitrophenoxy)methyl)piperidin-1-ium 2,2,2-trifluoroacetate

Participants

Reaction Steps

To a solution of (R)-tert-butyl 2-((2-cyano-3-nitrophenoxy)methyl)piperidine-1-carboxylate (Example 15e, 2.18 g, 6.03 mmol) in anhydrous DCM (65 mL) was added trifluoroacetic acid (7.91 mL) at room temperature. The reaction mixture was stirred at room temperature for over 1 hour. The solvent was removed under reduced pressure and the residue was dried under the vacuum to give the title product which could be used for the next step reaction without further purification. MS 262 (MH+).

Provenance & Evidence