Oxidative [4+2] Cycloaddition of α-(<i>N</i>-Arylamino) Carbonyls with Aryl Alkenes by Multiple C–H Functionalizations and [1,2]-Aryl Shifts
作者:Wen-Ting Wei、Fan Teng、Yang Li、Ren-Jie Song、Jin-Heng Li
DOI:10.1021/acs.orglett.9b02169
日期:2019.8.16
A new, general copper-catalyzed oxidative tandem [4+2] cycloaddition of α-(N-arylamino) carbonyl compounds with aryl alkenes to produce highly substituted quinolines has been developed, which allows the formation of three new C–C bonds through a sequence of multiple C–H functionalizations, annulation, and [1,2]-aryl shifts.
Palladium-catalyzed oxidative cross-coupling for the synthesis of α-amino ketones
作者:Xiao-Hong Wei、Zhen-Hua Li、Lian-Biao Zhao、Ping Zhang、Han-Cheng Zhou、Yan-Bin Wang
DOI:10.1039/c9ra06108h
日期:——
A novel oxidative cross-couplingreaction for the synthesis of α-aryl α-amino ketones in the presence of palladiumcatalysts using T+BF4− as an oxidant has been developed. This transformation was achieved by direct C–H oxidation of α-aminocarbonyl compounds and arylation. The mild reaction has a broad reaction scope and gives desired α-aryl α-amino ketones in moderate to excellent yields.
A palladium‐catalyzed tandem reaction for synthesis of 2‐arylindoles is described. The process involves a condensation/reduction/condensation/heteroannulation to give the respective indole. Furthermore, it also features satisfactory yields and selectivities.
A general access to 1,1-cyclopropane aminoketones and their conversion into 2-benzoyl quinolines
作者:Zhenjun Mao、Haijun Qu、Yanyan Zhao、Xufeng Lin
DOI:10.1039/c2cc35235d
日期:——
1,1-Cyclopropane aminoketones were efficiently synthesized in high yields by the tandem reaction of α-amino aryl ketones with vinyl sulfonium salts using DBU as the base in CH2Cl2. This methodology was utilized to synthesize 2-benzoyl quinolines.