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Synthesis 2001(8): 1275-1279
DOI: 10.1055/s-2001-15072
DOI: 10.1055/s-2001-15072
PAPER
© Georg Thieme Verlag Stuttgart · New York
Photoacylation of Electron-Rich Quinones: An Application of the ”Photo-Friedel-Crafts Reaction”
Further Information
Received
13 March 2001
Publication Date:
24 September 2004 (online)
Publication History
Publication Date:
24 September 2004 (online)
Abstract
Irradiation of substituted 1,4-benzo- or 1,4-naphthoquinones in the presence of several aldehydes resulted in the formation of acylated hydroquinones in good yields. In the case of 5-acetyloxy naphthoquinone 8, both regioisomers were formed, but the 2,8-isomer was favored in all cases examined. Even acylated tetrahydroxy naphthalenes became available in good yields by this method.
Key words
acylation - quinones - photochemistry
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References
The results from the solarchemical experiments will be published independently.