Iodoethane → HCID 69356079, compound

Participants

Reaction Steps

To a solution of ethyl methyl 4-(2-oxo-1-pyrrolidinyl)-1H-1,2,3-benzotriazole-6-carboxylate (D249) (400 mg, 1.54 mmol, 1 equiv) in DMF (10 ml) at room temperature was added NaH (60% dispersion in mineral oil, 68 mg, 1.69 mmol, 1.1 equiv) and the resulting mixture was stirred 5 min at this temperature. Ethyl iodide (135 μl, 1.69 mmol, 1.1 equiv) was added and the resulting solution was stirred for 2 h then concentrated in vacuo. The residue was dissolved in AcOEt and the organic phase was washed with H2O, dried over MgSO4 and concentrated in vacuo. Purification of the residue by flash chromatography on silica gel (AcOEt/iso-hexane: 100/0) gave methyl 1-ethyl-4-(2-oxo-1-pyrrolidinyl)-1H-1,2,3-benzotriazole-6-carboxylate (270 mg, 61%) as a pale yellow oil. [M+H]+=289.3, RT=2.47 min.

Provenance & Evidence