Triphenylphosphine → HCID 12083247, compound

Participants

Reaction Steps

To a solution of 2-(2-biphenyl-3-yl-5-methyl-thiazol-4-yl)-ethanol (2.58 g, 8.73 mmol), 2-(4-hydroxy-phenoxy)-2-methyl-propionic acid ethyl ester (1.96 g, 8.73 mmol), and triphenylphosphine (2.29 g, 8.73 mmol) in 90 mL tetrahydrofuran was added diisopropylazodicarboxylate (1.76 g, 8.73 mmol) dropwise over 30 min. After stirring 24 h, the solution was diluted with ethyl acetate, washed with water and brine, dried over magnesium sulfate, filtered and concentrated to an orange oil. Silica gel chromatography (100 g silica gel, 15% ethyl acetate/hexanes) afforded 470 mg (11% yield) of 2-{4-[2-(2-biphenyl-3-yl-5-methyl-thiazol-4-yl)-ethoxy]-phenoxy}-2-methyl-propionic acid ethyl ester as a colorless oil. 1H NMR (400 MHz, CDCl3) δ 8.06 (s, 1H), 7.81 (d, 1H), 7.62 (d, 2H), 7.57 (d, 1H), 7.46-7.42 (m, 3H), 7.37-7.34 (m, 1H), 6.80-6.74 (m, 4H), 4.235 (t, 2H), 4.20 (q, 2H), 3.15 (t, 2H), 2.44 (s, 3H), 1.49 (s, 6H), 1.24 (t, 3H). MS EI+ (m/e) 502.1

Provenance & Evidence