Water → 4-(1-Azetidinyl)butanal dimethylacetal

関与物質

反応手順

A mixture of azetidine (2.0 g, 35.0 mmol), 4-chlorobutanal dimethylacetal (5.88 g, 39.0 mmol) and K2CO3 (5.38 g, 39.0 mmol), in anhydrous DMF (100ml), was stirred at room temperature for 72 h. Water (50 ml) was added and the mixture extracted with EtOAc (3×150 ml). The combined extracts were washed with H2O (3×50ml), dried (Na2SO4) and evaporated. The crude product was purified by distillation (1.2 g). δ (360 MHz, CDCl3) 1.35-1.42 (2H, m, CH2), 1.57-1.64 (2H, m, CH2), 2.00-2.40 (2H, m, CH2), 2.36 (2H, t, J=9.0 Hz, CH2), 3.15 (4H, m, t, J=7.0 Hz, 2 of CH2), 3.33 (6H, s, 2 of OMe), 4.35 (1H, t, J=5.7 Hz, CH).

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