Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.tetlet.2008.04.137
Title: 10a-(4-Biphenyl)-10b-methyl-10a,10b-dihydropyrene: a conformational study and ring current effect
Authors: Yoon, S.-Y.
Lai, Y.-H. 
Keywords: Conformational mobility
Dihydropyrene
Dithiacyclophane
Ring current effect
Issue Date: 30-Jun-2008
Source: Yoon, S.-Y., Lai, Y.-H. (2008-06-30). 10a-(4-Biphenyl)-10b-methyl-10a,10b-dihydropyrene: a conformational study and ring current effect. Tetrahedron Letters 49 (27) : 4282-4285. ScholarBank@NUS Repository. https://doi.org/10.1016/j.tetlet.2008.04.137
Abstract: A dithiacyclophane was employed as a precursor to the title compound. A conformational study of the dithiacyclophane revealed a unique phenomenon in its terphenyl unit: one ring is rigidly held, the other terminal ring undergoes free rotation and the central ring exhibits restricted mobility. The aromatic protons of the biphenyl unit are all shielded by the dihydropyrene unit and well resolved in the 1H NMR spectrum, consistent with a ring current effect extended to eight conjugated carbon atoms away from the molecular plane of dihydropyrene. © 2008 Elsevier Ltd. All rights reserved.
Source Title: Tetrahedron Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/92900
ISSN: 00404039
DOI: 10.1016/j.tetlet.2008.04.137
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