Methyl iodide → HCID 67499544, compound

Participants

Reaction Steps

To a solution of the product of Example 1A (2.16 g, 8.00 mmol) in tetrahydrofuran (70 mL) was added 60% sodium hydride (0.96 g, 24.0 mmol) in portions, followed by addition of methyl iodide (1.6 mL, 25.6 mmol). The reaction mixture was stirred at ambient temperature for 5 hours, quenched with saturated ammonium chloride (300 mL), extracted with ethyl acetate (300 mL), washed with water (300 mL), brine, dried with anhydrous sodium sulfate, filtered, and concentrated to a yellow oil. The residue was chromatographed on silica gel, eluting with 0-to-30% ethyl acetate in hexanes to provide 2.147 g (94% yield) of the title compound as a colorless oil. 1H NMR (300 MHz, DMSO-d6) δ ppm 1.59 (d, J=12.55 Hz, 2H), 1.80 (td, J=12.88, 3.73 Hz, 2H), 2.04 (td, J=13.57, 3.73 Hz, 2H), 2.23-2.32 (m, 2H), 2.92 (s, 3H), 3.87 (s, 4H), 7.37 (dd, J=7.97, 4.58 Hz, 1H), 7.88 (dd, J=7.97, 1.53 Hz, 1H), 8.51 (dd, J=4.58, 1.53 Hz, 1H). MS (DCI) m/z 284.13 (M+H)+.

Provenance & Evidence