反应详情

2-(furan-2-yl)ethanamine (0.81 g, 7.30 mmol) was added to a premixed (10 min) solution of 3-tert-butyl-1H-pyrazole-5-carboxylic acid (0.61 g, 3.60 mmol), DCC (1.51 g, 7.30 mmol) and HOBt (0.99 g, 7.30 mmol) in DCM:DMF-solution (10 ml, 2:9, v/v). After stirring for 15 h at RT the reaction mixture was filtered through a pad of Celite and the filtrate was washed two times with water, evaporated to dryness and purified with CombiFlash to afford 0.36 g of the title compound. 1H-NMR (400 MHz; d6-DMSO): δ 1.27 (s, 9H), 2.84 (t, 2H), 3.46 (m, 2H), 6.17 (m, 1H), 6.35 (m, 2H), 7.52 (m, 1H), 8.08 (m, 1H), 12.89 (m, 1H).

1. filtrationwas filtered through a pad of Celite
2. washthe filtrate was washed two times with water
3. customevaporated to dryness
4. custompurified with CombiFlash