6-METHYL-3-PHENYLTHIOCHROMAN-4-ONE AND 6-METHOXY-3-PHENYLTHIOCHROMAN-4-ONE - CONFIGURATIONAL PREFERENCE OF THE PHENYLTHIO GROUP AT THE 3RD POSITION DUE TO REMOTE SUBSTITUTION

Authors
SRIRAM D SRINIVASAN S SANTHOSH KC BALASUBRAMANIAN KK
Citation
D. Sriram et al., 6-METHYL-3-PHENYLTHIOCHROMAN-4-ONE AND 6-METHOXY-3-PHENYLTHIOCHROMAN-4-ONE - CONFIGURATIONAL PREFERENCE OF THE PHENYLTHIO GROUP AT THE 3RD POSITION DUE TO REMOTE SUBSTITUTION, Acta crystallographica. Section C, Crystal structure communications, 53, 1997, pp. 1073-1075
Citations number
7
Categorie Soggetti
Crystallography
Journal title
Acta crystallographica. Section C, Crystal structure communications → ACNP
ISSN journal
01082701
Volume
53
Year of publication
1997
Part
8
Pages
1073 - 1075
Database
ISI
SICI code
0108-2701(1997)53:<1073:6A6>2.0.ZU;2-G
Abstract
The pyran ring adopts a distorted sofa conformation in the title compo unds, 6-methyl-3-phenylthiochroman-4-one (C16H14O2S), (I), and 6-metho xy-3-phenylthiochroman-4-one (C16H14O3S), (II). The S atom substituted at the third position is attached equatorially in (II) and axially in (I). High-resolution proton NMR studies could not provide a conclusiv e explanation for this feature.