2,3-dicyano-5,6-dichloro-p-benzoquinone in benzene 0.5 h; Heating;

Multi-step reaction with 2 steps 1: 1.07 g / LAH / diethyl ether / 2 h2: 60 percent / TsOH / diethyl ether / 0.17 h / Heating  

Multi-step reaction with 3 steps 1: 1.2 g / HF / 1.) -76 deg C, 30 min, 2.) 0 deg C, overnight2: 1.07 g / LAH / diethyl ether / 2 h3: 60 percent / TsOH / diethyl ether / 0.17 h / Heating