4-Methyl-5-(2-hydroxyethyl)thiazole → 4-[2-(4-Methyl-1,3-thiazol-5-yl)ethoxy]-2-nitroaniline

Participants

Reaction Steps

A mixture of 4-amino-3-nitrophenol (386 mg, 2.5 mmol), 2-(4-methyl-1,3-thiazol-5-yl)ethanol (0.299 mL, 2.5 mmol), polymer supported triphenylphosphine (1.25 g, 3 mmol/g, 3.75 mmol), and di-tert-butyl azodicarboxylate (864 mg, 3.75 mmol) in THF (10 mL) was stirred at room temperature for 16 hours. Filtered through Celite and concentrated under vacuum. The residue was purified by flash column chromatography on silica gel with 1:1 hexanes/ethyl acetate to provide 602 mg (86%) of the desired product. MS (DCI) m/e 279 (M+H)+, 1H NMR (300 MHz, DMSO-d6): □ 8.83 (s, 1H), 7.37 (d, J=3.05 Hz, 1H), 7.25 (s, 2H), 7.16 (dd, J=8.99, 2.88 Hz, 1H), 7.01 (s, 1H), 4.10 (t, J=6.27 Hz, 2H), 3.19 (t, J=6.27 Hz, 2H), 2.35 (s, 3H).

Provenance & Evidence