2,3-Dichloro-5,6-dicyano-1,4-benzoquinone → HCID 59822026, compound

Participants

Reaction Steps

4.0 g (8.7 mmol) of the compound from Example 1A are dissolved in 100 ml of dichloro-methane, and 2.17 g (9.6 mmol, 1.1 eq.) of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) are added a little at a time at 0° C. With stirring, the mixture is warmed to room temperature over a period of 3 h. The mixture is concentrated on a rotary evaporator and the residue is purified by chromatography (silica gel, mobile phase: isohexane/ethyl acetate 100:0→50:50).

Provenance & Evidence