media has emerged as a new facet of green chemistry. In this paper, a sulfone‐containing imidazolium‐based Brønsted acid ionic liquid was prepared and used as a recyclable acid catalyst. The ionic liquid catalyst enables the use of an industrially acceptable and environmentally benign solvent, butyl acetate, as the reaction medium. The ionic liquid/butyl acetate biphasic system was successfully utilized
Green synthesis of TiO
<sub>2</sub>
nanoparticles as an efficient heterogeneous catalyst with high reusability for synthesis of 1,2‐dihydroquinoline derivatives
作者:Mahmoud Abd El Aleem Ali Ali El‐Remaily、Ahmed M. Abu‐Dief、O. Elhady
DOI:10.1002/aoc.5005
日期:2019.8
TiO2 NPs synthesis using agricultural waste at lower applied temperature. Characterization of the extracted TiO2 NPs was confirmed by XRD, SEM, EDAX, TEM, HR‐TEM, SAED, and FT‐IR, respectively. The catalytic activity of TiO2 NPs was investigated in synthesis of 1,2‐dihydroquinoline derivatives with excellent yields and low cost. Purification of the synthesized 1,2‐dihydroquinoline derivatives carried
Highly efficient synthesis of polysubstituted 1,2-dihydroquinolines via cascade reaction of α-ketoesters with arylamines mediated by iodine
作者:Bao-Qiang Zhang、Yuan Luo、Yan-Hong He、Zhi Guan
DOI:10.1016/j.tet.2014.01.061
日期:2014.3
What Happens When the Terminal Aromatization is Blocked? Construction of 1,2-Dihydroquinoline Derivatives by<i>sp</i><sup>3</sup>CH Bond Oxidation of<i>N</i>-Arylalaninates
作者:Shiwei Lü、Yingzu Zhu、Xingge Ma、Xiaodong Jia
DOI:10.1002/adsc.201500885
日期:2016.3.31
aromatization‐blocked strategy, the 1,2‐dihydroquinoline skeleton was efficiently constructed by sp3 CH bond oxidation of N‐arylalaninates under catalytic radical cation salt‐promoted conditions. Investigation of the reaction scope shows broad generality and good functional group tolerance. This method provides a new way to synthesize 1,2‐dihydroquinoline derivatives from easily accessible starting materials