Diisopropylethylamine → HCID 68999332, compound

Participants

Reaction Steps

To a suspension of 4-{(S)-2-[4-(4-chloro-phenyoxy)-phenoxymethyl]-pyrrolidin-1-yl}-butyric acid HCl salt (220 mg, 0.5 mmol, 1 eq.) in dichloromethane (5 ml) was added PyBrOP (280 mg, 0.6 mmol, 1.2 eq.), DIPEA (200 mg, 1.5 mmol, 3 eq.) and (R)-1-phenyl ethylamine (80 mg, 0.6 mmol 1.2 eq.). The mixture was stirred at room temperature for 24 h. The mixture was poured onto 30 mL ice-water solution and this solution was extracted with EtOAc (3×30 mL). The combined organic layers were washed with water (2×30 mL), brine (30 mL) and dried over anhy. Na2SO4. The solvent was removed in vacuo to provide the crude product which was purified by silica gel flash chromatography to afford the title product (68 mg, 25%); LCMS; 95%; APCI+, Calcd 493.05. Found m/z 493.2 (M). 1H NMR (400 MHz, CDCL3); δ 1.47 (d, J=5.6 Hz, 3H), 1.52-2.01 (m, 6H), 2.21-2.59 (m, 4H), 2.79-2.98 (m, 2H), 3.12-3.23 (m, 1H), 3.68-3.89 (m, 2H), 5.10-5.17 (m, 1H), 6.81 (d, J=9.2 Hz, 2H), 6.86 (d, J=9.2 Hz, 2H), 6.92 (d, J=9.2 Hz, 2H), 7.22-7.26 (m, 5H), 7.29 (d, J=4.4 Hz, 2H).

Provenance & Evidence