4-Phenylnaphtho[2,3-<i>c</i>]furan-1(3<i>H</i>)-one, 9-Phenylnaphtho[2,3-<i>c</i>]furan-1(3<i>H</i>)-one and 3<i>a</i>,4-Dihydro-9-phenylnaphtho[2,3-<i>c</i>]furan-1(3<i>H</i>)-one Crystal Structures

• Main Authors: Nabyl Merbouh, Simon Cassegrain, Wen Zhou
• Format: Article
• Language: English
• Published: MDPI AG 2021-07-01
• Series: Crystals
• Subjects: crystal structure; arylnaphthalene lactones; position isomers; mixture of isomers
• Online Access: https://www.mdpi.com/2073-4352/11/8/857
• ISSN: 2073-4352

The crystal structures are reported for two unsubstituted arylnaphthalene lactones, 4-phenylnaphtho[2,3-<i>c</i>]furan-1(3<i>H</i>)-one (2), 9-phenylnaphtho[2,3-<i>c</i>]furan-1(3<i>H</i>)-one (3) and a non-aromatic dihydro arylnaphthene lactone, 3<i>a</i>,4-dihydro-9-phenylnaphtho[2,3-<i>c</i>]furan-1(3<i>H</i>)-one (5). There are only minor differences in the geometrical parameters of these structures. However, in certain cases, both isomers of arylnaphthalene lactones (termed Type I and Type II) were found in the same asymmetric unit cell.