We have shown that benzene-1,2-diol (1a) can act as a bisnucleophile in p-allylpalladium chemistry. The palladium-catalyzed condensation of substituted benzene-1,2-diols with 1,4-bis(methoxycarbonyloxy)but-2-ene gave the corresponding 2,3-dihydro-2-vinylbenzo-1,4 -dioxines in good yields, [5] whereas the same condensation performed with substituted 2-aminophenols or substituted 1,2-diaminobenzenes gave the corresponding 2-vinyl-3,4-dihydro-2H-1,4- ...
