Polymer-Supported Copper Complex for C−N and C−O Cross-Coupling Reactions with Aryl Boronic Acids
作者:Gary C. H. Chiang、Thomas Olsson
DOI:10.1021/ol048943e
日期:2004.9.1
[reaction: see text] Immobilization of copper onto modified Wang resin provided a polymer-supported copper catalyst, which is effective in cross-coupling reactions between N- or O-containing substrates and arylboronic acids. The copper catalyst is air stable and can be recycled with minimal loss of activity.
Ligand-Enabled Gold-Catalyzed C(sp<sup>2</sup>)–N Cross-Coupling Reactions of Aryl Iodides with Amines
作者:Manjur O. Akram、Avishek Das、Indradweep Chakrabarty、Nitin T. Patil
DOI:10.1021/acs.orglett.9b03082
日期:2019.10.4
example of ancillary (P,N)-ligand-enabled gold-catalyzed C-N cross-couplingreactions of aryl iodides with amines is reported. The high generality of the reaction in de novo synthesis, late-stage modifications, and cascade processes to access functionalized indolinones and carbazoles underscores the synthetic potential of the presented strategy. Monitoring the reaction with ESI-HRMS and NMR provided strong
Compounds having the structural formula I
1
or a pharmaceutically acceptable salt thereof, wherein
R is
2
R
1
, R
2
, R
3
, R
4
and R
5
are H, alkyl or alkoxyalkyl;
R
6
is H, alkyl, hydroxyalkyl or —CH
2
F;
R
7
, R
8
and R
9
are H, alkyl, alkoxy, alkylthio, alkoxyalkyl, halo or —CF
3
; and
Z is optionally substituted aryl, heteroaryl or heteroaryl-alkyl are disclosed.
Also disclosed is the use of compounds of formula I in the treatment of central nervous system diseases, in particular Parkinson's disease, alone or in combination with other agents for treating Parkinson's disease, and pharmaceutical compositions comprising them.
Synthesis of Oxazolidinones and Derivatives through Three-Component Fixation of Carbon Dioxide
作者:Congmin Mei、Yibo Zhao、Qianwei Chen、Changsheng Cao、Guangsheng Pang、Yanhui Shi
DOI:10.1002/cctc.201800142
日期:2018.7.19
three‐component fixation of atmospheric CO2 with readily available 1,2‐dichloroethane and aromatic amine toward oxazolidinones catalyzed by in situ NHC was developed. The reaction occurred in good to excellent yields with good generality and wide functional group tolerance, including challenging steric hindered substituted‐dichloroethane (e.g. 1,2‐dichloropropane and 2,3‐dichlorobutane). The catalytic system
Copper-Catalyzed One-Pot Synthesis of <i>N</i>-Aryl Oxazolidinones from Amino Alcohol Carbamates
作者:William Mahy、Pawel K. Plucinski、Christopher G. Frost
DOI:10.1021/ol502322c
日期:2014.10.3
sequential intramolecular cyclization of aminoalcoholcarbamates followed by Cu-catalyzed cross-coupling with aryl iodides under mild conditions has been developed. The reaction occurred in good yields and tolerated aryl iodides containing functionalities such as nitriles, ketones, ethers, and halogens. Heteroaryl iodides and substituted aminoalcoholcarbamates were also well tolerated.