Synthesis of naphthoxindoles, anthraoxindoles and phenanthrofuranones from arynes
摘要:
An efficient process for the synthesis of naphthoxindoles, anthraoxindoles and phenanthrofuranones by Diels-Alder reactions and dehydrogenation aromatization reactions of benzyne or naphthyne with methyleneindolinones or methylenebenzofuranones in good yields. The photophysical, redox, and thermal properties of oxadisilole fused naphthoxindoles and anthraoxindoles have been determined. This compounds show potential applications for organic light-emitting materials due to their high fluorescence quantum yields and thermal stabilities. (C) 2019 Published by Elsevier Ltd.
Generation of Synthetic Equivalents of Benzdiynes from Benzobisoxadisiloles
摘要:
Linear and angular benzobisoxadisiloles 14 and 16 can serve as the precursors for stepwise generations of the syntetic equivalents of 1,4- and 1,3-benzdiynes. Benzynes generated were trapped as [4+2] cycloaddition products. Two identical or different rings can be fused to the benzdiyne equivalents. Highly substituted arenes were obtained by removing the oxygen bridges from the furan adducts. The synthesis of naphthoxadisilole 28, which can serve as the precursor of 2,3-naphthyne, is also described.
Synthesis and Characterization of Oxadisilole-Fused 1<i>H</i>-Benzo[<i>f</i>]indazoles and 1<i>H</i>-Naphtho[2,3-<i>f</i>]indazoles
作者:Yajuan Zhang、Xuyan Ma、Yali Chen、Xuanming Chen、Lei Guo、Weiguo Cao、Jie Chen、Man Shing Wong
DOI:10.1002/ejoc.201300110
日期:2013.5
1H-benzo[f]- and 1H-naphtho[2,3-f]indazoles have been synthesized by the 1,3-dipolar cycloaddition reactions of benzo- or naphtho-oxabicycloalkenes with nitrile imines generated in situ from N-arylhydrazonoyl chlorides followed by deoxygenation and aromatization. The photophysical, redox and thermal properties of these compounds have been characterized. Some of the indazoles show potential as deep-blue emitters
Anthracene Capped Isobenzofuran: A Synthon for the Preparations of Iptycenes and Iptycene Quinones
作者:Bao-Jian Pei、Wing-Hong Chan、Albert W. M. Lee
DOI:10.1021/ol200309v
日期:2011.4.1
Anthracene capped isobenzofuran 5 (5,6-(9,10-dihydroanthracen-9,10-yl)isobenzofuran) was synthesized for the first time. It is a highly reactive and versatile synthon for the synthesis of iptycene derivatives via Diels−Alder reactions. Cycloadducts 10 could be readily deoxygenated to iptycenes 11. Two new reactions of PhI(OAc)2/TfOH have been explored. Endoxides 10 were directly oxidized to iptycene
Oxadisilole-fusedacridines, dioxatrisilole-fused acridines and benzo[b]acridines were synthesized through nucleophilic additions and aromatization reactions of arynes with 2-aminoaryl ketones or 2-aminoaryl aldehydes in good yields at room temperature. The photophysical, redox and thermal properties of these compounds were characterized. These compounds show potential applications as strong deep-blue
通过芳烃与2-氨基芳基酮或2-氨基芳基醛的亲核加成和芳构化反应,在室温下以高收率合成了草二甲氧基-杂的a啶,二恶三三唑-sil杂的and啶和苯并[ b ] ac啶。表征了这些化合物的光物理性质,氧化还原性质和热性质。由于高的荧光量子产率和良好的热稳定性,这些化合物显示出潜在的应用作为OLED的深蓝色或绿色强发光体。