2,3-Dichloro-5,6-dicyano-1,4-benzoquinone → HCID 46840742, compound

Participants

Reaction Steps

To a solution of 3-(4-sec-butyl-phenyl)-7-fluoro-2-[4-(2-hydroxy-ethoxy)-3,5-dimethyl-phenyl]-2,3-dihydro-1H-quinazolin-4-one (0.11 g, 0.24 mmol) in anhydrous THF (30 mL) was added DDQ (0.09 g, 0.4 mmol) and the reaction mixture was stirred for 72 hours at room temperature. The solvent was evaporated in vacuo and the crude material was purified by column chromatography (silica gel; 230-400 mesh; 0.5% methanol/CH2Cl2 as eluent) to give the title compound (Q) as white solid. Yield: 0.06 g (50%). MP 53.9-54.4° C. 1H-NMR (400 MHz, CDCl3): δ 8.38 (dd, 1H), 7.43 (dd, 1H), 7.22-7.05 (m, 5H), 6.99 (s, 2H), 3.90 (m, 2H), 3.78 (m, 2H), 2.59 (m, 1H), 2.16 (s, 6H), 2.05 (t, 1H), 1.59 (m, 2H), 1.20 (d, 3H), 0.71 (t, 3H).

Provenance & Evidence