Ammonium Chloride → HCID 22507303, compound

Participants

Reaction Steps

Method 6 General Experimental: Magnesium (230.0 mmol, 5.6 g) in THF (200 ml), under an argon atmosphere, was treated with 2-(2-bromoethyl)-1,3-dioxolane (200.0 mmol, 23.5 ml), slowly, keeping the internal temperature below 35° C. with the aid of an ice bath. After completion of the addition, the mixture was held at room temperature for an additional 1 h. 2-Trifluoromethyl benzaldehyde (100 mmol, 13.2 ml) in THF (100 ml) was cooled to −78° C. under an argon atmosphere, then treated with the freshly formed Grignard reagent prepared above. After completion of the addition, the solution was allowed to warm to room temperature, then held at room temperature overnight. The reaction mixture was then poured into saturated aqueous NH4Cl (200 ml), and extracted with ethyl acetate (2×150 ml). The combined organics were washed with brine (2×75 ml), then concentrated under reduced pressure to give 32.8 g of 3-[1,3]dioxolan-2-yl-1-(2-trifluoromethyl-phenyl)-propan-1-ol, which may be used without further purification. 1H NMR (CDCl3) δ 7.78 (1H, d, J=7.7), 7.62-7.52 (2H, m), 7.34 (1H, t, J=7.6), 4.92 (1H, t, J=4.0), 4.00-3.81 (5H, m), 1.90-1.80 (4H, m).

Provenance & Evidence