Light induced activity switch in interfacial hydrogen-bond catalysis with photo sensitive metal oxides
作者:Fang Niu、Jin Zhai、Lei Jiang、Wei-Guo Song
DOI:10.1039/b908834b
日期:——
UV light switches on the catalytic activities of several metal oxides in hydrogen bond catalyzed reactions because of the changes in the concentration of the surface hydroxyl groups.
紫外线光激活了几种金属氧化物在氢键催化反应中的催化活性,这是由于表面羟基浓度的变化。
Promotion of organic reactions by interfacial hydrogen bonds on hydroxyl group rich nano-solids
作者:Fang Niu、Chang-Chang Liu、Zhi-Min Cui、Jin Zhai、Lei Jiang、Wei-Guo Song
DOI:10.1039/b801361f
日期:——
Surface hydroxylgroup rich nano-structured solids dramatically increase the rate of several organic reactions; such effect is attributed to the formation of interfacial hydrogen bonds between the surface hydroxylgroups and the reactants; this catalytic effect is versatile and applicable for a broad range of reaction conditions.
A one-pot access to 2-(N-substituted Amino)-Quinones or 3-indolyl-Quinones from naphthol/hydroquinone
作者:Yu Dong、Yong Chen、Zhan-Yuan Zhang、Jun-Hu Qian、Zhen-Zhen Peng、Bo Chang、Zhi-Chuan Shi、Zhong-Hui Li、Bing He
DOI:10.1016/j.tet.2023.133337
日期:2023.4
naphthol/hydroquinone with amines or indoles, such as various (hetero)aromaticamine and aliphatic amine, has been developed. The reaction proceeds through oxidation of naphthol/hydroquinone with the CuBr2 or (NH4)2S2O8 oxidant. This reaction provides efficient access to the biologically important and synthetically useful 2-amino-quinones and 3-indolyl-quinones with good yields undermildconditions. The present
从萘酚/氢醌与胺或吲哚,如各种(杂)芳胺和脂肪胺,到2-( N-取代氨基)-1,4-醌或 3-吲哚基醌的顺序一锅法已经发达。该反应通过使用CuBr 2或(NH 4 ) 2 S 2 O 8氧化剂氧化萘酚/氢醌来进行。该反应提供了在温和条件下以良好的产率有效地获得生物学上重要且合成有用的 2-氨基醌和 3-吲哚基醌。本协议简单、实用,并显示出良好的功能组耐受性。
152. Melanin and its precursors. Part II. Model experiments on the reactions between quinones and indoles, and consideration of a possible structure for the melanin polymer
作者:John D. Bu'Lock、John Harley-Mason
DOI:10.1039/jr9510000703
日期:——
Moehlau; Redlich, Chemische Berichte, 1911, vol. 44, p. 3615