1,4-Palladium Migration via C−H Activation, Followed by Arylation: Synthesis of Fused Polycycles
摘要:
A novel palladium migration/arylation methodology for the synthesis of complex fused polycycles has been developed, in which one or more sequential Pd-catalyzed intramolecular migration processes involving C-H activation are employed. The chemistry works best with electron-rich aromatics, which is in agreement with the idea that these palladium-catalyzed C-H activation reactions parallel electrophilic aromatic substitution.
Visible-Light-Mediated Nitration of Protected Anilines
作者:Simon J. S. Düsel、Burkhard König
DOI:10.1021/acs.joc.7b03260
日期:2018.3.2
The photocatalytic nitration of protected anilines proceeds with riboflavin tetraacetate as an organic photoredox catalyst. Sodium nitrite serves as the NO2 source in this visible-light-driven room temperature reaction. Various nitroanilines are obtained in moderate to good yields without the addition of acid or stoichiometric oxidation agents. The catalytic cycle is closed by aerial oxygen as the
1,4-Palladium Migration via C−H Activation, Followed by Arylation: Synthesis of Fused Polycycles
作者:Marino A. Campo、Qinhua Huang、Tuanli Yao、Qingping Tian、Richard C. Larock
DOI:10.1021/ja035121o
日期:2003.9.1
A novel palladium migration/arylation methodology for the synthesis of complex fused polycycles has been developed, in which one or more sequential Pd-catalyzed intramolecular migration processes involving C-H activation are employed. The chemistry works best with electron-rich aromatics, which is in agreement with the idea that these palladium-catalyzed C-H activation reactions parallel electrophilic aromatic substitution.
Synthesis of Fused Polycycles by 1,4-Palladium Migration Chemistry
作者:Qinhua Huang、Marino A. Campo、Tuanli Yao、Qingping Tian、Richard C. Larock
DOI:10.1021/jo048788h
日期:2004.11.1
Novel palladium migration/arylation methodology for the synthesis of complex fused polycycles has been developed, in which one or more sequential Pd-catalyzed intramolecular migration processes involving C-H activation are employed. The chemistry works best with electron-rich aromatics, which is in agreement with the idea that these palladium-catalyzed C-H activation reactions parallel electrophilic aromatic substitution.
A Greener Approach for the Chemoselective Boc Protection of Amines Using Sulfonated Reduced Graphene Oxide as a Catalyst in Metal- and Solvent-Free Conditions
作者:Rupali Mittal、Anupam Mishra、Satish K. Awasthi
DOI:10.1055/s-0039-1690239
日期:2020.2
Sulfonated reduced grapheneoxide (SrGO) has displayed great potential as a solid acid catalyst due to its efficiency, cost-effectiveness, and reliability. In this study, SrGO was synthesized by the introduction of sulfonic acid-containing aryl radicals onto chemically reduced grapheneoxide using ultrasonication. The SrGO catalyst was characterized by Fourier Transform Infrared (FTIR) spectroscopy