1: (i) Mg, Et2O, (ii) /BRN= 741856/, benzene-1,4-diol 2: CrO3, aq. H2SO4 / diethyl ether / -20 - -15 °C 3: aq. Na2CO3 / methanol / Heating View Scheme

1: CrO3, aq. H2SO4 / diethyl ether / -20 - -15 °C 2: aq. Na2CO3 / methanol / Heating View Scheme

sodium carbonate in methanol Heating;