The metal-free reduction of nitroarenes to aniline derivatives was accomplished in a short time by using a benzothiazoline as the hydrogen donor in combination with a Bronsted acid. An enantioselective synthesis of 2-arylquinolines was achieved by using 1-aryl-3-(2-nitrophenyl)propan-1-ones as starting materials and a combination of a benzothiazoline and a chiral phosphoric acid.
aetiology of various multifactorial diseases; on the other hand, the development of multifunctional compounds is a recognized strategy for the control of complex diseases. To this end, a series of benzothiazole derivatives was synthesized and evaluated for their multifunctional effectiveness as antioxidant, sunscreen (filter), antifungal and antiproliferative agents. Compounds were easily synthesized
Cyanide as a powerful catalyst for facile synthesis of benzofused heteroaromatic compounds via aerobic oxidation
作者:Yeon-Ho Cho、Chun-Young Lee、Cheol-Hong Cheon
DOI:10.1016/j.tet.2013.05.138
日期:2013.8
Highly efficientsynthesis of benzofused heteroaromatic compounds via aerobicoxidationcatalyzed by cyanide anion has been developed. The Schiff bases derived from 2-aminophenol and aldehydes provided the corresponding benzoxazoles in high yields in the presence of a catalytic amount of cyanide in an open flask under ambient conditions without the use of any external metal co-oxidants and bases. Furthermore
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.
Enantioselective Organocatalytic Transfer Hydrogenation of α‐Imino Esters by Utilization of Benzothiazoline as Highly Efficient Reducing Agent
作者:Chen Zhu、Takahiko Akiyama
DOI:10.1002/adsc.201000328
日期:2010.10.9
Benzothiazoline was employed as an efficient and versatile reducing agent for the chiral phosphoric acid-catalyzed transfer hydrogenation of α-iminoesters. The corresponding α-amino esters were furnished with excellent enantioselectivities. Novel and readily removable benzothiazolines bearing a hydroxy group were also investigated.