2-(4-甲氧基苯基)-3,4-二氢-1H-异喹啉 、 硝基丙烷 在
Rose Bengal-conjugated microporous polymer on the base of 1,4-diethynylbenzene 、 air 作用下,
反应 18.0h,
以95%的产率得到1-(1-硝基丙基)-2-(4-甲氧基苯基)-1,2,3,4-四氢异喹啉
Photoredox catalysis under shear using thin film vortex microfluidics
作者:Michael N. Gandy、Colin L. Raston、Keith A. Stubbs
DOI:10.1039/c5cc02153g
日期:——
A microfluidic vortex fluidic device (VFD) operating in either confined or continuous mode is effective in high yielding photoredox reactions involving Rose Bengal, with short reaction times.
Conjugated Microporous Polymers with Rose Bengal Dye for Highly Efficient Heterogeneous Organo-Photocatalysis
作者:Jia-Xing Jiang、Yanyun Li、Xiaofeng Wu、Jianliang Xiao、Dave J. Adams、Andrew I. Cooper
DOI:10.1021/ma402104h
日期:2013.11.26
successfully integrated into the skeleton of a conjugatedmicroporouspolymer via palladium-catalyzed Sonogashira–Hagihara cross-coupling polycondensation. These polymers are stable in various solvents, including concentrated hydrochloric acid, and are thermally stable. The resulting polymers show substantial porosity and are highly active for heterogeneous photocatalytic aza-Henry reactions at room temperature
The oxidative C-C bond formations between Csp³-H bond adjacent to nitrogen and Csp³-H bond of nitroalkanes are catalyzed efficiently by magnetically recoverable iron nanoparticles using oxygen. The catalyst can be magnetically removed and recycled easily for nine times without decreasing activity.
Solvent-Free Cross-Dehydrogenative Coupling Reactions under High Speed Ball-Milling Conditions Applied to the Synthesis of Functionalized Tetrahydroisoquinolines
作者:Weike Su、Jingbo Yu、Zhenhua Li、Zhijiang Jiang
DOI:10.1021/jo2015533
日期:2011.11.4
Solvent-free reaction using a high-speed ball milling technique has been first applied to cross-dehydrogenative coupling (CDC) reactions between tetrahydroisoquinolines and three types of pronucleophiles such as nitroalkanes, alkynes, and indoles. All coupling products were obtained in good yields at short reaction times (no more than 40 min). When alkynes and indoles were used as pronucleophile, the reactions can be catalyzed efficiently by recoverable copper balls without any additional metal catalyst.
Covalent organic frameworks as metal-free heterogeneous photocatalysts for organic transformations
作者:Yongfeng Zhi、Ziping Li、Xiao Feng、Hong Xia、Yumin Zhang、Zhan Shi、Ying Mu、Xiaoming Liu
DOI:10.1039/c7ta07691f
日期:——
Two-dimensional covalentorganic frameworks (2D-COFs) are excellent candidates for photocatalytic organictransformations due to their periodic columnar π-arrays and ordered nanochannels. Here, we present a novel 2D-COF that features permanent porosity with high surface area and large pore volume, and exhibits a high crystallinity and an excellent stability. Indeed, the new 2D-COF was found to be a