U. Azzena et al., REDUCTIVE ELECTROPHILIC SUBSTITUTION OF PYROGALLOL DERIVATIVES - SYNTHESIS OF 2,3-DISUBSTITUTED PHENOLS, Tetrahedron letters, 34(35), 1993, pp. 5635-5638
1,2-Dimethoxy-3-methoxymethoxybenzene, 1, was used as the starting mat
erial for the transformation of a 1,2,3-trioxybenzene into various 1-o
xy-2,3-dicarbobenzenes, via regioselective reductive electrophilic sub
stitution of the 2-methoxy group followed by Pd-catalyzed cross-coupli
ng reaction.