Ethanol → Trifluoroacetic acid

Participants

Reaction Conditions

Reaction Steps

A mixture of compound 25.4 (0.027 g), ethanol (1.5 mL), TFA (0.6 mL) and water (0.5 mL) was stirred at 60° C. for 18 h. The mixture was concentrated under reduced pressure, and the residue was purified by HPLC to afford compound 25.6 as a TFA salt (0.014 g, 51%). 1H NMR (CD3OD): δ 1.4 (t, J=8 Hz, 6H), 2.9 (M, 4H), 3.2 (m, 2H), 3.58 (brs, 2H), 3.65 (m, 2H), 4.25 (m, 4H), 4.42 (d, J=10 Hz, 2H), 4.85 (m, 2H), 6.75 (d, J=9 Hz, 2H), 6.9 (m, 4H), 7.0 (d, J=9 Hz, 2H), 7.4-7.6 (m, 6H), 8.1 (brs, 2H). 31P NMR (CD3OD): δ 20.8. MS: 769 (M+1).

Provenance & Evidence