5-Acetyl-N-(4-chloro-3-iodophenyl)thiophene-2-carboxamide → 5-acetyl-N-(4-chloro-3-(pyridin-2-yl)phenyl)thiophene-2-carboxamide

Participants

Reaction Steps

5-Acetyl-N-(4-chloro-3-iodophenyl)thiophene-2-carboxamide (202 mg, 0.5 mmol) was used in Procedure B with 2-pyridylzincbromide (2.5 mL, 1.25 mmol, 0.5 M in THF). Purified by silica gel chromatography (10-100% ethyl acetate/hexanes) to yield 5-acetyl-N-(4-chloro-3-(pyridin-2-yl)phenyl)thiophene-2-carboxamide as a yellow solid: TLC Rf=0.19 (50% ethyl acetate/hexanes); 1H NMR (CDCl3, 400 MHz) δ 8.96 (bs, 1H), 8.67 (d, 1H), 7.79 (dt, 1H), 7.68 (m, 3H), 7.61 (d, 1H), 7.58 (d, 1H), 7.37 (d, 1H), 7.32 (m, 1H), 2.58 (s, 3H); MS (Q1) 357.0 (M)+.

Provenance & Evidence