Die 1,3-diphenylcyclopentadienylkomplexe von Natrium, Indium(I), Thallium(I) und Eisen(II): Röntgenstrukturanalyse von Tl(C5H3Ph2)(THF) und Fe(C5H3Ph2)2
摘要:
1,4-Diphenylcyclopentadiene (1) reacts with TlOC2H5 or NaNH2 to give the corresponding half-sandwich complexes Na(C(5)H(3)Ph(2)) (2) and Tl(C(5)H(3)Ph(2)) (4). 2 reacts with InCl to form In(C(5)H(3)Ph(2)) (3), and 2 as well as 4 react with FeCl2 to form Fe(C(5)H(3)Ph(2))(2) (5). The H-1, C-13 NMR and mass spectra of the new compounds, as well as the X-ray crystal structure analyses of 4 and 5, are reported and discussed.
deprotonated form of [(fluorene)FeCp]PF6 functions as an efficient cyclopentadienyliron (CpFe) transfer reagent to other cyclopentadienyls (Cp‘) to give mixed ferrocenes (CpFeCp‘). By using this method, many new mixed ferrocenes have been prepared, and one of the mixed ferrocenes has been used to make bi- and trimetallic compounds.
Correlation of Structure with Crystalline to Amorphous Phase Transitions of 1,3,6-Substituted Fulvene-Derived Molecular Glasses
作者:Loren C. Brown、Andrew J. Peloquin、Nicholas P. Godman、Gary J. Balaich、Scott T. Iacono
DOI:10.1021/acs.joc.0c01014
日期:2020.9.4
An investigation into the crystalline to amorphousphasetransitions of prepared 1,3,6-substituted pentafulvenes showed the expected reversible heated melt and cooling recrystallization in only a few examples. Systematic incorporation of bulky substituents at the 6-position of the fulvene ring led to the nonreversible thermal behavior, rendering phases that were locked into glassy, vitrified states
Gold(I)-Catalyzed Highly Enantioselective [4 + 2]-Annulations of Cyclopentadienes with Nitrosoarenes via Nitroso-Povarov versus Oxidative Nitroso-Povarov Reactions
作者:Prakash D. Jadhav、Jia-Xuan Chen、Rai-Shung Liu
DOI:10.1021/acscatal.0c01293
日期:2020.5.15
gold-catalyzed highlyenantioselective nitroso-Povarov reactions between cyclopentadienes and nitrosoarenes in cold dichloroethane, in which nitrosoarenes serve as 4π-electron donors and cyclopentadienes as 2π-donors. High enantioselectivity has been achieved for substrates over a wide scope. With the same chiral catalyst, nitroso-4-fluorobenzenes in these reactions under DCM/THF/water/air led to oxidative nitroso-Povarov
Symmetrical bis(fulvene) chromophores: model compounds for acceptor–donor–acceptor dye architectures
作者:Endrit Shurdha、Brianne K. Repasy、Hannah A. Miller、Kelsey Dees、Scott T. Iacono、David W. Ball、Gary J. Balaich
DOI:10.1039/c4ra07738e
日期:——
A facile method for synthesizing conjugated bis(fulvenes) demonstrates tailorable optical band gaps and serves as a model dye system for new organic electronic applications.
一种合成共轭双(富烯)的简便方法展示了可调的光学带隙,并作为新有机电子应用的模型染料系统。
Gold(I)-Catalyzed Highly Diastereo- and Enantioselective Constructions of Bicyclo[3.2.1]oct-6-ene Frameworks via (4 + 3)-Cycloadditions
作者:Sudhakar Dattatray Tanpure、Tung-Chun Kuo、Mu-Jeng Cheng、Rai-Shung Liu
DOI:10.1021/acscatal.1c04483
日期:2022.1.7
1]oct-6-ene frameworks involves gold-catalyzed (4 + 3)-cycloadditions between 2-(1-alkynyl)-2-alken-1-ones and substituted cyclopentadienes; diastereoselectivity (dr >25:1) and enantioselectivity (up to 99.9% ee) are achieved with a chiral gold catalyst. Our DFT calculations suggest a three-step ionic mechanism for the cycloadditions of gold-containing 1,3-dipoles with cyclopentadienes, in which an exo-spatial