2,3-Dichloro-5,6-dicyano-1,4-benzoquinone → HCID 68705098, compound

Participants

Reaction Steps

A mixture of 1-methyl-1,4,5,6-tetrahydro-1,6,7-triaza-as-indacene-2-carboxylic acid methyl ester A2 (1.03 mmol) and DDQ (1 eq) in dry dioxane (15 mL) was refluxed for 1.5 h with stirring. After solvent removal the slurry was treated with water under vigorous stirring. The precipitate was filtered, washed with water and dried. Obtained the title compound (67%). ESI (+) MS: m/z 230 (MH+). 1H NMR (300 MHz): 3.89 (s, 3H), 4.34 (s, 3H), 7.17 (d, J=8.71, 1H), 7.26 (s, 1H), 7.28 (d, J=8.71, 1H), 8.38 (s, 1H), 13.32 (s, 1H).

Provenance & Evidence