Methyl 4-aminobenzoate → HCID 14763211, compound

Participants

Reaction Steps

Methyl 4-aminobenzoate (1.34 g, 8.87 mmol) and [1,2]oxathiolane 2,2-dioxide (1.02 g, 8.36 mmol) were heated at 100–110° C for 1 h. The cooled residue was washed with 1N HCl and water and air-dried to give 4-(3-sulfo-propylamino)-benzoic acid methyl ester (1.62 g, yield: 71%). 1H NMR (DMSO-d6) δ 7.70 (d, J=8.7 Hz, 2H), 6.65 (d, J=8.7 Hz, 2H), 5.88 (br, s, NH+SO3H), 3.19 (t, J=7.0 Hz, 2H), 2.63 (t, J=7.3 Hz, 2H), 1.87 (quint, J=7.0 Hz, 2H). LC/MS (ESI) 256.22 (M+H)+, tR=2.21 min (10–90% MeOH in H2O with 10 mM NH4OAc in a 4-min run).

Provenance & Evidence