Hydrochloric Acid → HCID 18386558, compound

Participants

Reaction Steps

A stirred solution of 0.35 g (1.07 mmol) of 2′-(trimethylacetamido)-5′-chloro-3′-fluoro-2,2,2-trifluoroacetophenone in 3 mL of 1,2-dimethoxyethane and treated with 24 mL of 6N aq. HCl. The mixture was stirred at reflux for 2 h, cooled to RT, and brought to pH 9 with K2CO3. The mixture was extracted twice with ether and the combined organic extracts were washed with brine, dried (MgSO4), and concentrated under reduced pressure to give 240 mg (92%) of 2′-amino-5′-chloro-3′-fluoro-2,2,2-trifluoroacetophenone as an oily orange solid. 1H NMR (300 MHz, CDCl3) δ7.54(m, 1H); 7.25(dd, 1H, J=10.6, 2.2 Hz); 6.40-6.60(br. s, 2H). High resolution mass spec: calculated for C8H4NOClF4(M+): 240.9918, found: 240.9914. 19F NMR (282 MHz, CDCl3) δ−132.7(s, 1F), −70.6(s, 3F).

Provenance & Evidence