Triethylamine → HCID 18512165, compound

Participants

Reaction Steps

The product from Example 68C (0.050 g, 0.096 mmoles), 1-hydroxybenzotriazole hydrate (0.015 g, 0.109 mmoles), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (0.021 g, 0.109 mmoles) in DMF (1.5 mL) were treated with β-alanine ethyl ester hydrochloride (0.121 g, 0.136 mmoles) and triethylamine (0.025 mL, 0.181 mmoles). The reaction mixture was shaken at room temperature overnight. The mixture was diluted with ethyl acetate, washed with H2O, saturated aqueous NaHCO3 (2×), 1N H3PO4 (2×), and brine, dried (Na2SO4), filtered, and the filtrate concentrated under reduced pressure. The residue was purified by preparative HPLC (CH3CN:0.1% trifluoroacetic acid in H2O) on a YMC ODS Guardpak column to provide the title compound. 1H NMR (300 MHz, CDCl3) δ7.73 (d, 2 H), 7.25 (m, 2 H), 7.15 (m, 2 H), 6.95 (m, 6 H), 6.75 (m, 2 H), 6.15 (s, 1 H), 4.18 (q, 2 H), 4.13 (s, 2 H), 4.11 (s, 2 H), 3.73 (dd, 2 H), 2.96 (s, 3 H), 2.65 (t, 2 H), 2.30 (s, 3 H), 1.28 (t, 3 H); MS (ESI+) m/z 652 (M+H)+.

Provenance & Evidence