Lawesson's reagent → 6-Bromo-2-thioxo-1,2,3,4-tetrahydroquinoline-5-carbonitrile

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of 6-bromo-2-oxo-1,2,3,4-tetrahydroquinoline-5-carbonitrile (145-2; 1.3 g, 0.0052 mol) in toluene (20 mL) was added Lawesson's reagent (2.1 g, 0.0052 mol). Reaction mass was refluxed at 100° C. for 12 h. The reaction mixture was concentrated and directly purified by silica gel column chromatography to obtain title compound. 1H NMR (400 MHz, CDCl3) δ 1H NMR (400 MHz, DMSO-d6) δ 7.612-7.561 (m, 1H), 6.980-6.959 (t, J=8.4 Hz, 1H), 3.779-3.769 (d, J=4 Hz, 4H).

Provenance & Evidence