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2-Benzylidene-2,3-dihydro-1H-benzo[f]chromen-1-one

✍ Scribed by Marx, A. ;Manivannan, V. ;Suresh, R. ;Kanagam, Charles Christopher ;Büyükgüngör, Orhan


Publisher
International Union of Crystallography
Year
2007
Tongue
English
Weight
387 KB
Volume
63
Category
Article
ISSN
1600-5368

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✦ Synopsis


The dihedral angles between the phenyl ring and the naphthalene part of the chromanone unit in the two independent molecules of the title compound, C~20~H~14~O~2~, are 56.17 (4) and 55.62 (7)°. The molecular structure is stabilized by weak intramolecular C—H...O interactions and the crystal packing is stabilized by weak C—H...π interactions.


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## Abstract Two new structurally isomeric, 2‐(2,4,4‐trimethyl‐3,4‐dihydro‐2__H__‐benzo[__h__]chromen‐2‐yl)‐1‐naphthol (**1****)** and 3‐(2,4,4‐trimethyl‐3,4‐dihydro‐2__H__‐benzo[__g__]chromen‐2‐yl)‐2‐naphthol (**3**) have been synthesized from 2‐acetyl‐1‐naphthol and ethyl‐3‐hydroxy‐2‐naphthoate, r