反应详情

To a solution of N-pentylthiophen-3-amine (7.30 g, 4.30 mmol) in ether (50.0 mL) was added a solution of oxalyl chloride (6.00 mL, 42.0 mmol) in ether (50.0 mL) slowly at −10° C. The reaction mixture was stirred at ambient temperature for 3 h and quenched with cold water. The organic layer was separated, dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated in vacuo to dryness. The residue was subjected to column chromatography to afford the title compound (5.10 g, 53%): MS (ES+) m/z 246.3 (M+23).

1. customquenched with cold water
2. customThe organic layer was separated
3. dry with materialdried over anhydrous sodium sulfate
4. filtrationfiltered
5. concentrationThe filtrate was concentrated in vacuo to dryness