N 掺杂的多孔碳 (NC) 是由甘蔗渣合成的,甘蔗渣是一种可持续且广泛使用的生物质废物。优选的 NC 样品具有发达的多孔结构、类似石墨烯的表面形态和不同的 N 种类。更重要的是,多相碳催化剂在各种杂环氮化合物的有氧脱氢反应中表现出优异的催化性能(49个例子,产率高达96%),类似于C 3 N 4和GO。TEM、BET 和 XPS 表征以及 EPR 分析表明,NC 的增强催化性能来自其对 O 2和杂环氮的高活化能力,分别归因于多孔结构和吡啶 N (N-6) 物种.
The cascade synthesis of quinazolinones and quinazolines using an α-MnO<sub>2</sub> catalyst and tert-butyl hydroperoxide (TBHP) as an oxidant
作者:Zhe Zhang、Min Wang、Chaofeng Zhang、Zhixin Zhang、Jianmin Lu、Feng Wang
DOI:10.1039/c5cc02785c
日期:——
Heterogeneously catalyzed synthesis of quinazolinones or quinazolines is reported in this study.
这项研究报告了喹唑啉酮或喹唑啉的非均相催化合成。
10.1016/j.mcat.2024.114432
作者:Hu, Yongke、Tian, Hongyou、Cao, Haotian、Li, Jin、Li, Shaozhong、Li, Huaju、Li, Yanxing、Shen, Gulou、Chen, Lei
DOI:10.1016/j.mcat.2024.114432
日期:——
A novel, transition metal-free visible light-mediated method for the construction of -heterocycles from easily available aldehydes and -substituted anilines in the presence of 4CzIPN under oxygen atmosphere has been developed. This photocatalytic system is a sustainable and atom-economical methodology that avoids toxic chemical additives and transition metals under ambient conditions. A variety of
Mixed crystalline phases and catalytic performance of OMS-2 based nanocomposites for one-pot synthesis of quinazolines with O2 as an oxidant
作者:Nan Yao、Xiuru Bi、Liping Zhang、Luyao Tao、Peiqing Zhao、Xu Meng、Xiang Liu
DOI:10.1016/j.mcat.2021.111499
日期:2021.3
A biomass-derived N-doped porous carbon catalyst for the aerobic dehydrogenation of nitrogen heterocycles
作者:Jing-Jiang Liu、Fu-Hu Guo、Fu-Jun Cui、Ji-Hua Zhu、Xiao-Yu Liu、Arif Ullah、Xi-Cun Wang、Zheng-Jun Quan
DOI:10.1039/d1nj05411b
日期:——
superior catalytic performance in the aerobic dehydrogenation of various heterocyclic nitrogen compounds (49 examples, up to 96% yield), similar to that of C3N4 and GO. Characterization by TEM, BET and XPS accompanied by the EPR analysis revealed that the enhanced catalytic properties of NC came from its high activation ability for both O2 and heterocyclic nitrogen, attributed to the porous structure and
N 掺杂的多孔碳 (NC) 是由甘蔗渣合成的,甘蔗渣是一种可持续且广泛使用的生物质废物。优选的 NC 样品具有发达的多孔结构、类似石墨烯的表面形态和不同的 N 种类。更重要的是,多相碳催化剂在各种杂环氮化合物的有氧脱氢反应中表现出优异的催化性能(49个例子,产率高达96%),类似于C 3 N 4和GO。TEM、BET 和 XPS 表征以及 EPR 分析表明,NC 的增强催化性能来自其对 O 2和杂环氮的高活化能力,分别归因于多孔结构和吡啶 N (N-6) 物种.
Quinoxaline-specific enantioselective sulfa-michael reaction catalyzed by chiral phosphoric acid
作者:Xiongfei Deng、Shiqi Zhang、Hesen Huang、Xin Cui、Zhuo Tang、Guangxun Li
DOI:10.1016/j.cclet.2023.108145
日期:2023.1
Highly enantioselective sulfa-Michael additions (SMA) between 2-alkenyl quinoxalines and aromatic thiols are accomplished using a low loading of chiralphosphoricacid catalyst (1 mol%). It was confirmed by an investigation of a lot of azaarenes that the two C=N units of quinoxalines are indispensable for controlling the reaction enantioselectivities. A series of non-terminal 2-alkenes substituted