反应详情

A mixture of (3-hydroxymethyl-phenyl)-[5-isopropyl-2,6-bis-(4-methoxy-benzyloxy)-pyrimidin-4-yl]-methanone (1.9 g, 3.52 mmol), pyridinium chlorochromate (1.14 g, 5.28 mmol), and dried celite (1 g) in dichloromethane (20 ml) was stirred for 1 hr. at room temperature. The mixture was then filtered through a short silica gel pad and the pad was washed with EA. The combined filtrate was evaporated in vacuo and the residue was purified by silica gel column chromatography (eluent, EA:hexanes (1:4)) to afford 1.75 g (74%) of a pale yellow syrup. 1H NMR (200 MHz, CDCl3) δ 1.19 (6H, d, J=7.4 Hz), 2.88 (1H, m), 3.79 (3H, s), 3.83 (3H, s), 5.29 (2H, s), 5.45 (2H, s), 6.77-6.95 (4H, m), 7.28-7.42 (4H, m), 7.65 (1H, m), 8.11-8.28 (3H, m), 10.03 (1H, s).

1. dry with materialdried celite (1 g) in dichloromethane (20 ml)
2. customat room temperature
3. filtrationThe mixture was then filtered through a short silica gel pad
4. washthe pad was washed with EA
5. customThe combined filtrate was evaporated in vacuo
6. customthe residue was purified by silica gel column chromatography (eluent, EA:hexanes (1:4))