反应详情

To a solution of 6-cyclopentyloxy-pyridin-3-ylamine (0.248 g, 1.39 mmol) in THF (2 mL) was added 4-nitrophenyl chloroformate (0.280 g, 1.39 mmol) portionwise. After stirring at rt for 1 h, a heavy precipitate formed in the organic layer. Filtration of the organic layer provided the title compound as a light pink solid (0.368 g, 77%). 1H-NMR (400 MHz, CDCl3): δ 11.1 (s, 1H), 9.11 (s, 1H), 9.04 (d, 1H), 8.26 (d, 2H), 7.40 (d, 2H), 7.14 (d, 1H), 5.36 (m, 1H), 2.11 (m, 2H), 1.97 (m, 2H), 1.84 (m, 2H), 1.71 (m, 2H).

1. customa heavy precipitate formed in the organic layer
2. filtrationFiltration of the organic layer