反应详情

温度

23 °C

A mixture of 2-bromo-4-chlorothiophenol (3.74 g, 16.8 mmol), p-toluene sulfonic acid (0.427 g, 1.7 mmol) and 3,4-dihydro-2-H-pyran (0.985 ml, 16.8 mmol) in CH2Cl2 (30 mL) was stirred at 23° C. for 18 hours. After the addition of NaOH, the organic phase was separated, dried over MgSO4, filtered and the filtrate was concentrated in vacuo to afford the title compound as a yellow oil, (4.91 g, 95%) 1H NMR (CDCl3) δ7.6-7.5 (m, 2H), 7.35-7.2 (m, 1H), 5.37 (t, J=4.5 Hz, SCHO, 1H), 4.25-4.1 (m, CH2O, 1H), 3.7-3.55 (m, CH2O, 1H), 2.2-2.05 (m, 1H), 2.0-1.8 (m, 2H), 1.8-1.6 (m, 3H): IR 1566, 1542, 1450, 1367, 1257, 1188, 1101, 1037, 1024, 1008, 867, 809, 783 cm−1; Anal. Calcd. for C11H12BrClOS: C, 42.95; H, 3.93. Found: C,43.15; H, 3.91.

1. customthe organic phase was separated
2. dry with materialdried over MgSO4
3. filtrationfiltered
4. concentrationthe filtrate was concentrated in vacuo