Unexpected and Efficient Photochemical Rearrangement of 6-Hydroxyethylpyran-2-ones to 4-Alkylidene-5,6-dihydropyrans

DOI: 10.1016/0040-4039(95)01828-6

Source and publish data:

Tetrahedron Letters p. 8531 - 8534 (1995)

Update date:2022-07-30

Topics:

Authors:

Chase, Charles E.

Jarstfer, Michael B.

Arif, Atta M.

West, F. G.

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Article abstract of DOI:10.1016/0040-4039(95)01828-6

Pyran-2-ones 2a-e bearing pendant alcohols underwent conversion to dihydropyrans 7 via irradiation in MeOH followed by stirring in the presence of catalytic HCl.This process requires the intervention of a prior skeletal rearrangement of the starting pyran

Full text of DOI:10.1016/0040-4039(95)01828-6

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