Highly Active [Pd(μ-Cl)(Cl)(NHC)]2(NHC = N-Heterocyclic Carbene) in the Cross-Coupling of Grignard Reagents with Aryl Chlorides

2009 ◽  
Vol 28 (9) ◽  
pp. 2915-2919 ◽  
Author(s):  
Caroline E. Hartmann ◽  
Steven P. Nolan ◽  
Catherine S. J. Cazin
Molecules ◽  
2020 ◽  
Vol 25 (1) ◽  
pp. 230 ◽  
Author(s):  
Elwira Bisz ◽  
Michal Szostak

Aryl benzoates are compounds of high importance in organic synthesis. Herein, we report the iron-catalyzed C(sp2)–C(sp3) Kumada cross-coupling of aryl chlorobenzoates with alkyl Grignard reagents. The method is characterized by the use of environmentally benign and sustainable iron salts for cross-coupling in the catalytic system, employing benign urea ligands in the place of reprotoxic NMP (NMP = N-methyl-2-pyrrolidone). It is notable that high selectivity for the cross-coupling is achieved in the presence of hydrolytically-labile and prone to nucleophilic addition phenolic ester C(acyl)–O bonds. The reaction provides access to alkyl-functionalized aryl benzoates. The examination of various O-coordinating ligands demonstrates the high activity of urea ligands in promoting the cross-coupling versus nucleophilic addition to the ester C(acyl)–O bond. The method showcases the functional group tolerance of iron-catalyzed Kumada cross-couplings.


2019 ◽  
Vol 36 (5) ◽  
pp. 859-864 ◽  
Author(s):  
Yingying Zhang ◽  
Fangwai Han ◽  
Mengyao Zhang ◽  
Huixin Zhang ◽  
Ying Li ◽  
...  

ChemInform ◽  
2013 ◽  
Vol 44 (28) ◽  
pp. no-no
Author(s):  
Takanori Iwasaki ◽  
Kiyokazu Higashikawa ◽  
Vutukuri P. Reddy ◽  
Willbe W. S. Ho ◽  
Yukari Fujimoto ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document