Triptycene Skeleton Research Articles

ChemInform Abstract: UNUSUAL PHOTOCHEMICAL REDUCTION AND DEACYLATION OF NAPHTHYL KETONES INCORPORATED IN A TRIPTYCENE SKELETON

Chemischer InformationsdienstVolume 13, Issue 14 Preparative Organic Chemistry ChemInform Abstract: UNUSUAL PHOTOCHEMICAL REDUCTION AND DEACYLATION OF NAPHTHYL KETONES INCORPORATED IN A TRIPTYCENE SKELETON M. IWAMURA, Search for more papers by this authorT. ASANO, Search for more papers by this authorY. TANAKA, Search for more papers by this authorH. IWAMURA, Search for more papers by this author M. IWAMURA, Search for more papers by this authorT. ASANO, Search for more papers by this authorY. TANAKA, Search for more papers by this authorH. IWAMURA, Search for more papers by this author First published: April 6, 1982 https://doi.org/10.1002/chin.198214114Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume13, Issue14April 6, 1982 RelatedInformation

Restricted Rotation Involving the Tetrahedral Carbon. XIV. Conformational Equilibria and Attractive Interactions in Substituted 9-Benzyltriptycenes

Abstract Several 9-benzyltriptycene derivatives were prepared by addition of benzynes to 9-benzylanthracenes. Rotation about the C9–Cbenzyl bond of compounds with a substituent at a peri-position to the benzyl group was found to be frozen at low temperatures on the NMR time scale but not at room temperature. In contrast, compounds with two substituents at two peri-positions to the benzyl group showed a frozen rotation about the C9–Cbenzyl bond at room temperature. Distribution of the conformers, as judged from the PMR intensities, showed preference to the dl-isomers in spite of the fact that they are the ones which are highly disfavored by steric effects. Interpretation of the phenomenon was based on the fact that attractive interactions, mainly charge-transfer type, exist between the substituted benzo group in the triptycene skeleton and the benzene ring in the benzyl group.