SCHEDULED MAINTENANCE
The reaction of tetrakis(triphenylphosphine)platinum with 1,2-benzocyclobutadienequinone (1) effects an unsymmetrical opening of, and insertion of Pt(PPh3)2 into, the four-membered ring of (1) to give two conformers of the title compound, whose crystal structures have been determined.
J. A. Evans, G. F. Everitt, R. D. W. Kemmitt and D. R. Russell, J. Chem. Soc., Chem. Commun., 1973, 158 DOI: 10.1039/C39730000158
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