Ethyl bromoacetate → [2-(2-Methanesulfonylamino-ethyl)-phenoxy]-acetic Acid Ethyl Ester

Participants

Reaction Steps

A mixture of N-[2-(2-hydroxy-phenyl)-ethyl]-methanesulfonamide (4.3 g, 20 mmol), Nal (1.2 g, 8.0 mmol), K2CO3 (6.07 g, 44 mmol), ethyl bromoacetate (3.34 g, 20 mmol), and DMF (70 mL) was stirred at room temperature for 24 h. The reaction was poured into water and the aqueous solution was extracted with CH2Cl2. The organic solution was washed with water (1×) followed by brine (1×). The organic solution was dried (MgSO4), filtered, and concentrated. Flash chromatography (hexanes to 7:3 hexanes:EtOAc) provided the title compound (800 mg). 1H NMR (400 MHz, CDCl3) δ7.18 (m, 2H), 6.93 (t, 1H), 6.71 (d, 1H), 4.97 (m, 1H), 4.65 (s, 2H), 4.24 (q, 2H), 3.42 (m, 2H), 2.94 (t, 2H), 2.75 (s, 3H), 1.27 (t, 3H); MS 319 (M+18).

Provenance & Evidence