Heterogeneous carbon nitride photocatalyst for C–C bond oxidative cleavage of vicinal diols in aerobic micellar medium
作者:Tengfei Niu、Shengjun Chen、Mei Hong、Tianhao Zhang、Jiayang Chen、Xinyu Dong、Bangqing Ni
DOI:10.1039/d0gc01727b
日期:——
A green and efficient visible-light promoted aerobic oxidative C–C bond cleavage of vicinal diols in micellarmedium has been developed. This protocol used graphitic carbon nitride with nitrogen vacancies (CN620) as a metal-free recyclable photocatalyst and CTAB as surfactant in water. Control experiments and the ESR results indicated that superoxide radicals and valence band holes played an important
NaBrO3/bmim[HSO4]: a versatile system for the selective oxidation of 1,2-diols, α-hydroxyketones, and alcohols
作者:Jitender M. Khurana、Anshika Lumb、Ankita Chaudhary
DOI:10.1007/s00706-016-1749-z
日期:2017.2
found to be an excellent oxidizing agent in aqueousmedium. NaBrO3:bmim[HSO4] oxidized 1,2-diols, α-hydroxyketones, and alcohols to the corresponding carbonylcompounds in excellent yields. This method offers advantages such as low cost reagents, aqueousreaction conditions, moderate temperatures and short reaction times and hence environmentally benign reaction. Moreover, the ionic liquid bmim[HSO4] could
A selective, efficient and environmentally friendly method for the oxidative cleavage of glycols
作者:Nuria García、Rubén Rubio-Presa、Patricia García-García、Manuel A. Fernández-Rodríguez、María R. Pedrosa、Francisco J. Arnáiz、Roberto Sanz
DOI:10.1039/c5gc02862k
日期:——
A catalytic methodology for the oxidativecleavage of vicinal diols is described as an advantageous alternative in terms of environmental impact to classical methods involving toxic oxidants. The novel strategy...
quantitative reduction of aromatic aldehydes, ketones, diketones and oxo aldehydes to alcohols by use of TiCl3/NH3 in aqueous methanol solution is reported. The reducing system distinguishes between different classes of aldehydes and/or ketones, and many functionalities that usually do not survive under reducing conditions are tolerated well. The concept of reversal of chemoselectivity has also been developed
Aerobic oxidation of alcohols with air catalyzed by decacarbonyldimanganese
作者:Shan-Shui Meng、Li-Rong Lin、Xiang Luo、Hao-Jun Lv、Jun-Ling Zhao、Albert S. C. Chan
DOI:10.1039/c9gc02446h
日期:——
The oxidation of alcohols to carbonyl compounds using air as the terminal oxidant is highly desirable. As described in previous reports, the abstraction of α-H of the alcohol is the most important step, and it typically requires not only a metal catalyst but also complex ligands, co-catalysts and bases. Herein, we report a practical and efficient method for the oxidation of primary alcohols, secondary