There is provided a compound having Formula (I): (I). In the formula: NpHet is a naphthalene core having at least one fused 5-membered heteroaromatic ring, where the heteroaromatic ring has one heteroatom which is O, S, Se, or Te; Ar1-Ar6 are the same or different and are a hydrocarbon aryl group, a heteroaryl group, or a deuterated analog thereof; a and b are the same or different and are 0 or 1; m and n are the same or different and are 0 or 1; with the proviso that a, b, m, and n are not all 0.
Synthesis and Photochromic Properties of Molecules Containing [<i>e</i>]-Annelated Dihydropyrenes. Two and Three Way π-Switches Based on the Dimethyldihydropyrene−Metacyclophanediene Valence Isomerization
作者:Reginald H. Mitchell、Timothy R. Ward、Yongsheng Chen、Yunxia Wang、S. Ananda Weerawarna、Peter W. Dibble、Michael J. Marsella、Adah Almutairi、Zhi-Qiang Wang
DOI:10.1021/ja0288136
日期:2003.3.1
more than one photochromic switch present and thus have more than a simple "on-off" state. Thermodynamic data are obtained for the thermal closing reactions. The anthrodihydropyrene (12) has the fastest thermal closing (tau(1/2) = 20 min), while the furanodihydropyrene (19') has the slowest (tau(1/2) = 63 h) at 46 degrees C. An electrochemical readout of the state of the switch is demonstrated for the
X-ray Structures of Cyclophanes Derived from Naphtho[1,2-<i>c</i>:5,6-<i>c</i>]difuran and the Synthesis, Structure, and Reaction Kinetics of Its 1,3,6,8-Tetrasilylated Derivative
作者:Steven J. Robbins、Michelle E. Thibault、Jason D. Masuda、David R. Ward、René T. Boeré、Peter W. Dibble
DOI:10.1021/jo900582r
日期:2009.8.7
of magnitude, consistent with predictions based on their structure-count ratios and with the reactivity of the novel 1,3-bis(tert-butyldimethylsilyl)isobenzofuran. Crystal structures of two cyclophanesderivedfrom the reaction of naphtho[1,2-c:5,6-c]difuran and bis(imide) or bis(ester) dienophiles show marked differences in the conformation of the aliphatic chain found in the solid state.
Pi-Switches: Synthesis of Three-Way Molecular Switches Based on the Dimethyldihydropyrene−Metacyclophanediene Valence Isomerization
作者:Reginald H. Mitchell、Timothy R. Ward、Yunxia Wang、Peter W. Dibble
DOI:10.1021/ja983848k
日期:1999.3.1
Naphtho[1,2-<i>c</i>:5,6-<i>c</i>]difuran: A Reactive Linker and Cyclophane Precursor
作者:Michelle E. Thibault、Taunia L. L. Closson、Sidney C. Manning、Peter W. Dibble
DOI:10.1021/jo034777x
日期:2003.10.1
Naphtho[1,2-c:5,6-c]difuran has been isolated in a 9-step synthesis from 2,6-dimethylnaphthalene. It is a highly reactive diene similar in nature to the related isobenzofuran. In Diels-Alder reactions, its intermediate monoadducts are actually less reactive that the parent difuran making possible sequential Diels-Alder reactions with different dienophiles. Reaction with a tethered bis(dienophile) leads