Water → 2-Chloro-4-methoxyphenoxy-1,3-thiazole

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a suspension of 2-chloro-4-methoxyphenol (10 g, 63 mmol) and K2CO3 (9.7 g, 69.4 mmol) in N,N-dimethyl formamide (120 mL) was added 2-bromothiazole (11.4 g, 69.4 mmol). The suspension was heated at 150° C. for 4 hours, cooled to ambient temperature, and poured into water (1000 mL). The mixture was extracted with ether (2×300 mL) and the combined ether layers were dried (MgSO4), filtered and concentrated. The resulting black oil was purified by flash chromatography on silica gel eluting with a solvent gradient from 10% to 25% ethyl acetate in hexanes to provide 12.3 g of the title compound (81%) as a light yellow liquid. 1H NMR (300 MHz, DMSO-d6) δ ppm 3.81 (s, 3H) 7.01 (dd, J=9.01, 3.13 Hz, 1H) 7.18-7.21 (m, 1H) 7.23 (t, J=3.13 Hz, 2H) 7.47 (d, J=9.19 Hz, 1H); MS (ESI) m/z 241.9 (M+H)+.

Herkunft & Nachweise