benzonorbornadiene 在
catalyst 、 钯氮气 、 甲醇 、 氢气 、 三环[6.2.1.02,7]十一碳-2,4,6-三烯 作用下,
反应 3.0h,
以33 g of a product whose nuclear magnetic resonance spectrum corresponds to the expected structure are obtained的产率得到三环[6.2.1.02,7]十一碳-2,4,6-三烯
参考文献:
名称:
Benzonorbornene derivatives, processes for their preparation and
Palladium-Catalyzed Intermolecular Alkene Carboacylation via Ester C–O Bond Activation
作者:Haley K. Banovetz、Kevin L. Vickerman、Colton M. David、Melisa Alkan、Levi M. Stanley
DOI:10.1021/acs.orglett.1c00940
日期:2021.5.7
We report palladium-catalyzed intermolecular carboacylation of alkenes with ester electrophiles and tetraarylborate nucleophiles. Bicyclic alkenes react with a variety of pentafluorophenyl benzoate and alkanoate esters and sodium tetraarylborates to form ketone products in ≤99% yields. These reactions occur in the absence of a directing group and demonstrate esters are competent acyl electrophiles
Building bridges: We have developed an unprecedented asymmetricdecarbonylativearyladdition of an aromaticaldehyde to bicyclicalkenes, catalyzed by chiral cationiciridium. This process provides efficient access to a wide variety of enantioenriched bridged bicyclic systems from aromaticaldehydes in high yields and with excellent enantioselectivities (up to 90 % yield and up to 99 % ee).
This invention is directed to compounds of the formula (I):
1
and their pharmaceutically acceptable salts, wherein R
1
, R
2
, and R
3
are as defined herein; intermediates for the synthesis of such compounds, pharmaceutical compositions containing such compounds; and methods of using such compounds in the treatment of neurological and psychological disorders.
SYNTHESIS AND APPLICATIONS OF SOLUBLE PENTACENE PRECURSORS AND RELATED COMPOUNDS
申请人:CHOW Tahsin J.
公开号:US20090226634A1
公开(公告)日:2009-09-10
Methods for synthesizing 1,4-(ketone or ketal) bridged and/or 5,14-(ketone or ketal) bridged hydropentacenes useful as soluble precursors for formation of pentacene or substituted (e.g., halo) pentacenes; precursor compounds formed thereby; methods for preparing form the precursor compounds conductive thin films comprising pentacene or a substituted pentacene, and articles including such thin films are described. Also described are tetracene and anthracene derivatives which should also be useful in the formation of conductive thin films, among other uses.
Synthesis and applications of soluble pentacene precursors and related compounds
申请人:Academia Sinica
公开号:US08277903B2
公开(公告)日:2012-10-02
The present disclosure relates to methods and systems for synthesis of bridged-hydropentacene, hydroanthracene and hydrotetracene from the precursor compounds pentacene derivatives, tetracene derivatives, and anthracene derivatives. The invention further relates to are methods and systems for forming thin films for use in electrically conductive assemblies, such as semiconductors or photovoltaic devices.