反应详情

5-Hydroxy-1-indanone (0.636 g, 4.30 mmol), tetrahydro-pyran-4ol (1.22 mL, 12.80 mmol), PPh3-polymer supported (2.864 g, 8.59 mmol), DBAD (1.978 g, 8.59 mmol) and THF (40 mL) were mixed, and shaken overnight. The mixture was filtered, and washed with THF (10 mL×3). The filtrate was concentrated. The residue was purified by flash chromatography to give the above intermediate (0.85 g, 85%). MS (APCI) m/z 233 (M+H)+; 1H NMR (300 MHz, CD3OD) δ ppm 1.79-1.89 (m, 2H) 2.01-2.12 (m, 2H) 2.62-2.69 (m, 2H) 3.07-3.15 (m, 2H) 3.85-4.00 (m, 4H) 4.75 (m, 1H) 6.97 (dd, J=8.65, 2.20 Hz, 1H) 7.08 (s, 1H) 7.63 (d, J=8.48 Hz, 1H).

1. additionwere mixed
2. filtrationThe mixture was filtered
3. washwashed with THF (10 mL×3)
4. concentrationThe filtrate was concentrated
5. customThe residue was purified by flash chromatography