Trifluoroacetic acid → HCID 16093585, compound

Participants

Reaction Steps

To a stirred solution of methyl 4-[(2S,4S)-1tert-butoxycarbonyl-4-methoxy-2-pyrrolidinyl]methoxybenzoate (2.38 g, 3.61 mmol) in CH2Cl2 (46 ml) was added TFA (23 ml) at room temperature. After 14 h stirring, the mixture was concentrated in vacuo. The residue was diluted by the addition of CH2Cl2 and 1 N NaOH, and extracted with CH2Cl2. The combined extracts were washed with brine, dried over Na2SO4, which was concentrated in vacuo. The residue was chromatographed on silica gel [50 g, CHCl3/MeOH (20/1)], to give methyl 4-[(2S,4S)-4-methoxy-2-pyrrolidinyl]methoxybenzoate (950 mg, 99%) as a yellow oil. 1H-NMR (CDCl3) δ2.16 (t, J=5.3 Hz, 1H), 2.72 (s, 1H), 2.95 (d, J=6.8 Hz, 1H), 3.11 (d, J=11.0 Hz, 1H), 3.26 (t, J=1.9 Hz, 3H), 3.52 (br, 1H), 3.84 (d, J=1.7 Hz, 3H), 3.92 (s, 1H), 4.00 (d, J=4.1 Hz, 2H), 6.88 (m, 2H), 7.94 (m, 2H).

Provenance & Evidence