Triethylamine → HCID 178491192, compound

Participants

Reaction Steps

A stirred solution of 15A (200 mg, 0.598 mmol) in dichloromethane (5 mL) was treated with triethylamine (0.208 mL, 1.495 mmol), followed by slow addition of 3-chloro-2,2-dimethyl propanoyl chloride (0.155 mL, 1.196 mmol) at room temperature. After stirring for 2 h, reaction was judged complete by LCMS. It was washed with water, and the organics were dried over anhydrous sodium sulphate and concentrated under reduced pressure. The crude product was purified by Isco silica column (24 g) eluted with ethyl acetate:hexane, 0%-100%. Concentration of the appropriate fractions yielded 15B (226 mg, 83% yield) as a white foam. MS (ES): m/z=453.2 [M+H]+. 1H NMR (400 MHz, DMSO-d6) δ ppm 7.02 (d, 2H, J=8.5 Hz); 6.75 (d, 2H, J=8.5 Hz); 4.41 (s, 2H); 4.22-4.30 (m, 1H); 3.88-3.98 (m, 1H); 3.72 (s, 3H); 3.69 (s, 2H); 3.19-3.30 (m, 1H); 1.92-2.02 (m, 2H); 1.01-1.69 (m, 23H).

Provenance & Evidence