Triethylamine → HCID 69357218, compound

Participants

Reaction Steps

To a solution of methyl 3-{[(3-chloropropyl)sulfonyl]amino}-2-fluoro-5-nitrobenzoate (D145) (300 mg, 0.85 mmol, 1 equiv) in EtOH (30 ml) was added NEt3 (280 μl, 2 mmol, 2.3 equiv) and the resulting solution was refluxed for 1.5 h then cooled to room temperature and concentrated in vacuo. The residue was dissolved in AcOEt and the organic phase was washed with a 2N aqueous HCl solution, dried over MgSO4 and concentrated in vacuo. The residue was triturated with AcOEt/Et2O to give methyl 3-(1,1-dioxido-2-isothiazolidinyl)-2-fluoro-5-nitrobenzoate (D147) (150 mg, 55%) as a light tan solid which was used in the next step without further purification. [M+H+ NH3]+=336.3, RT=2.50 min.

Provenance & Evidence