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10-(4-Methoxyphenyl)-3,7-dimethyl-1H,9H,10H-dipyrano[3,4-e:4′,3′-b]pyran-1,9-dione

✍ Scribed by Gao, Yuan ;Zhang, Yan ;Tu, Shujiang

Publisher: International Union of Crystallography
Year: 2006
Tongue: English
Weight: 123 KB
Volume: 62
Category: Article
ISSN: 1600-5368
DOI: 10.1107/s1600536806000961

No coin nor oath required. For personal study only.

✦ Synopsis

The title compound, C 20 H 16 O 6 , was synthesized by the reaction of 4-methoxybenzaldehyde with triacetic acid lactone in ethylene glycol catalyzed by KF-alumina. The pyran ring adopts a boat conformation and the benzene ring is perpendicular to the mean plane through the fused ring system.

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✦ Synopsis

10-(4-Methoxyphenyl)-3,7-dimethyl-1H,9H,10H-dipyrano[3,4-e:4′,3′-b]pyran-1,9-dione