Synthesis of Polysubstituted Quinolines from α-2-Aminoaryl Alcohols Via Nickel-Catalyzed Dehydrogenative Coupling
作者:Sanju Das、Debabrata Maiti、Suman De Sarkar
DOI:10.1021/acs.joc.7b03198
日期:2018.2.16
This study reports a nickel-catalyzed sustainable synthesis of polysubstitutedquinolines from α-2-aminoaryl alcohols by a sequential dehydrogenation and condensation process that offers the advantages of a low catalyst loading and wide substrate scope. In contrast to earlier reported methods, this strategy allows the use of both primary as well as secondary α-2-aminoaryl alcohols in combination with
The present disclosure is generally directed to antiviral compounds, and more specifically directed to combinations of compounds which can inhibit the function of the NS5A protein encoded by Hepatitis C virus (HCV), compositions comprising such combinations, and methods for inhibiting the function of the NS5A protein.
Simple and Clean Photo-induced Methylation of Heteroarenes with MeOH
作者:Wenbo Liu、Xiaobo Yang、Zhong-Zhen Zhou、Chao-Jun Li
DOI:10.1016/j.chempr.2017.03.009
日期:2017.5
Heteroarene methylation utilizing a cheap and safe methylation source without involving transition metals represents an important yet challenging objective. Here, a simple and clean catalyst-free protocol for the methylation of various heteroarenes (including six- and five-membered types) is described under light irradiation. This protocol employs cheap, readily available, and abundant MeOH as both
A visible-light-induced photoredoxMiniscialkylation reaction of N-heteroarenes with ethyl acetate has been reported. The low-toxic ethyl acetate was used for the first time as an alkylation reagent. Hence, 4-quinazolinones, quinolines and pyridines reacted smoothly in the current reaction system. Mechanistic studies indicate that LiBr plays a key role to dramatically improve the efficiency of the
The synthesis of quinolines <i>via</i> denitrogenative palladium-catalyzed cascade reaction of <i>o</i>-aminocinnamonitriles with arylhydrazines
作者:Jing Xie、Hang Huang、Tong Xu、Renhao Li、Jiuxi Chen、Xueting Ye
DOI:10.1039/d0ra01043j
日期:——
example of the palladium-catalyzed cascade reaction of o-aminocinnamonitriles with arylhydrazines has been achieved, providing an efficient synthetic pathway to accessquinolines with moderate to good yields. Preliminary mechanistic experiments indicate that this cascade process involves sequential denitrogenative addition followed by an intramolecular cyclization.