Methanol → 3-Bromopropiophenone thiosemicarbazone

Participants

Reaction Steps

(Du, X.; Guo, C.; Hansell, E.; Doyle, P. S.; Caffrey, C. R.; Holler, T. P.; McKerrow, J. H.; Cohen, F. E. J. Med. Chem. 2002, 45, 2695-2707) Into a round bottom flask containing 3-bromopropiophenone (0.508 g, 2.34 mmol), 20 mL of anhydrous methanol were added and the solution was refluxed for 15 minutes. To the warm ketone solution, thiosemicarbazide (0.184 g, 2.04 mmol) and 1% solution of HOAc (0.2 mL) were added. The reaction mixture was refluxed under nitrogen atmosphere for 17 h, at which point, the solvent was evaporated and, the crude reaction mixture was purified by flash chromatography (30% EtOAc/70% hex) to obtain 0.2498 g (0.873 mmol) of the product in a 37% yield.

Provenance & Evidence