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Furans Act as Dienophiles in Facile Diels−Alder Reactions with Masked o- Benzoquinones

✍ Scribed by Chen, Chien-Hsing; Rao, Polisetti Dharma; Liao, Chun-Chen

Book ID: 120602783
Publisher: American Chemical Society
Year: 1998
Tongue: English
Weight: 121 KB
Volume: 120
Category: Article
ISSN: 0002-7863
DOI: 10.1021/ja982974l

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## Abstract o‐Benzoquinone monoketals, generated in situ by oxidation of o‐methoxyphenols (I) in the presence of methanol, undergo Diels—Alder reaction with olefins (III) and dihydrofuran to give the endo adducts (IV) and (VI) selectively.