Carbene ligands as anthracyclinone synthons VII. Quinone ketal functionalized carbonyl carbene complexes: synthesis, structure and carbene annulation

Article abstract of DOI:10.1016/0022-328X(90)85125-I

The addition of lithiated quinone bis-ketals obtained via anodic oxidation of 2-bromo-1,4-dimethoxy-benzene or -naphthalene and subsequent metal-halogen exchange to hexacarbonyl-chromium or -tungsten leads to pentacarbonyl quinone bis-ketal metallates.Alk