Synthesis ofC3-Symmetric Nano-Sized Polyaromatic Compounds by Trimerization and Suzuki−Miyaura Cross-Coupling Reactions
作者:Sambasivarao Kotha、Dhurke Kashinath、Kakali Lahiri、Raghavan B. Sunoj
DOI:10.1002/ejoc.200400257
日期:2004.10
Various C3-symmetric molecules were prepared by trimerization of acetyl aromatic compounds and subsequently coupled with various boronic acids under Pd0 catalysis conditions to generate oligoaryl/-heteroaryl C3-symmetric molecules. Several furan- and thiophene-containing star-shaped molecules were prepared by the use of Suzuki−Miyauracross-coupling as a key step. Structural and conformational details
The acid catalysed triple self-condensation of 1-thien-2-ylethanone (2-acetylthiophene) and five relatedcompounds is presented. Tetrachlorosilane used as the Lewis acid produces dry hydrogen chloride which catalyzes the self-condensation process. Depending on the reaction conditions and the substitution of the carbonyl substrates, the reaction can proceed as a [2+2+2] cyclotrimerization towards C3-symmetric
An organic electroluminescent device, which has, between a pair of electrodes, at least one organic layer including a light-emitting layer, in which the organic layer contains a specific tetraphenylene compound, and in which the light-emitting layer contains a phosphorescent material; and a specific tetraphenylene compound that can be used in the device.
STAR-SHAPED COMPOUNDS FOR ORGANIC SOLAR CELLS
申请人:Nutz Eva
公开号:US20140027746A1
公开(公告)日:2014-01-30
The present invention relates to compounds of the general formula (I) The present invention also relates to a process for the preparation of such compounds, the compounds obtainable by this process, the use of these compounds, semiconducting layers and electronic components.