The application of a C(vinyl), C(aryl)-palladacycle from vinyl-containing substrates is challenging due to the interference of a reactive double bond in palladium catalysis. This Letter describes a [4 + 2] or [4 + 3] cyclization based on a C(vinyl), C(aryl)-palladacycle by employing α-oxocarboxylic acids as the insertion units under a palladium/air system. The reaction proceeded through the key vinyl
Enantioselective synthesis of spiro-<i>N</i>,<i>O</i>-ketals <i>via</i> iridium and Brønsted acid co-catalyzed asymmetric formal [4+2] cycloaddition
作者:Xiang-Qi Xie、Xingguang Li、Pei-Nian Liu
DOI:10.1039/d3cc05923e
日期:——
We present an iridium and Brønsted acid co-catalyzed enantioselective formal [4+2] cycloaddition reaction of cyclic enamides with 2-(1-hydroxyallyl)phenols. This method yields a wide range of N-unsubstituted spiro-N,O-ketals, with good efficiency (up to 94%) and excellent enantioselectivities (most >95% ee). The protocol features easy scale-up and facile product derivatization.
COMPOUND FOR ORGANIC PHOTOELECTRIC DEVICE AND ORGANIC PHOTOELECTRIC DEVICE INCLUDING THE COMPOUND
申请人:Cheil Industries Inc.
公开号:EP2520632A2
公开(公告)日:2012-11-07
Disclosed are a compound for an organic photoelectric device and an organic photoelectric device including the same, wherein the compound for an organic photoelectric device is represented by Chemical Formula 1.
The above Chemical Formula 1 is the same as defined in the specification. Using the compound for an organic photoelectric device, an organic photoelectric device having excellent thermal/electrochemical stability and life-span, and efficiency is realized.