Enol ether formation by disproportionation of the 1,5-biradical intermediate in the photocyclization of o-isopropoxybenzophenone

DOI: 10.1016/S0040-4039(00)92114-2

Source and publish data:

Tetrahedron Letters p. 895 - 898 (1991)

Update date:2022-09-26

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Authors:

Wagner Wagner

Laidig Laidig

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Article abstract of DOI:10.1016/S0040-4039(00)92114-2

The 1,3-dioxane formed by uv irradiation of o-isopropoxybenzophenone is produced by intramolecular cyclization of a hydroxy enol ether, the disproportionation product of the 1,5-biradical formed by triplet state hydrogen abstraction. The enol ether is stable in the absence of acid.

Full text of DOI:10.1016/S0040-4039(00)92114-2

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