N-(p-bromophenyl)tetrahydroisoquinoline 、 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91%的产率得到2-(4-bromophenyl)-1-(1-nitropropyl)-1,2,3,4-tetrahydroisoquinoline
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.
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
efficient metal‐free photocatalytic system for the facile construction of sp3–sp3 CC bonds between tertiary amines and activated CH bonds has been achieved. Spectroscopic study and product analysis demonstrate for the first time that photoinduced electron transfer from N‐aryl tetrahydroisoquinolines to eosinY bis(tetrabutylammonium salt) (TBA‐eosinY) takes place to generate TBA‐eosinY radical anion,
用可见光照射,温和,简单,以及SP的容易施工高效的不含金属的光催化系统3 -SP 3个Ç 叔胺和激活℃之间C键 H键已经实现。光谱研究和产物分析首次证明了光诱导电子从N-芳基四氢异喹啉到曙红Y的双(四丁基铵盐)(TBA-曙红Y)的转移产生了TBA-曙红Y自由基阴离子,该阴离子可随后与亲核试剂反应和分子氧。更惊人的是,电子自旋共振(ESR)测量为形成超氧自由基阴离子(O 2-)提供了直接的证据。)而不是可见光照射下的单线态氧(1 O 2)。因此,该活性物质被认为是有氧光催化反应的大加速速率的原因。