
Tetrahedron Letters p. 2523 - 2526 (1998)
Update date:2022-08-11
Topics:
Sobczak, Martin
Wagner, Peter J.
UV irradiation of the title compound produces cis-1,2- diphenylbenzocyclobutenol quantitatively. While stable at temperatures below 0°, at room temperature it establishes a high enough equilibrium population of its EE o-xylylenol precursor to undergo slow reversion to ketone and rapid reaction with maleic anhydride or oxygen, as well as photoinduced cyclization to the trans cyclobutenol.
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(1979)