Palladium-catalyzed denitrogenative cross-coupling of aryl halides with arylhydrazines under mild reaction conditions
作者:Manjunatha Kempasiddaiah、Vishal Kandathil、Ramesh B. Dateer、B. S. Sasidhar、Shivaputra A. Patil、Siddappa A. Patil
DOI:10.1007/s11243-020-00443-3
日期:2021.4
greener approach for the synthesis of various functionalized biaryl frameworks in good to excellent yield through palladium-catalyzed denitrogenative cross-coupling of aryl halides with arylhydrazines under mild reactionconditions was developed. Catalytic system is free from the aid of expensive ligands and external oxidants. Biogenically prepared palladium nanoparticles (Pd NPs) immobilized cellulose
C–H arylation of unactivated arenes with aryl halides catalyzed by cobalt porphyrin
作者:Ching Tat To、Tek Long Chan、Bao Zhu Li、Ying Ying Hui、TSZ Yiu Kwok、Suet Yu Lam、Kin Shing Chan
DOI:10.1016/j.tetlet.2010.12.092
日期:2011.3
A general procedure for cobalt-catalyzed direct C–H arylation of unactivated arenes has been discovered. This method employs arylhalides as the direct coupling partners with arenes without using any Grignard-type reagents. This catalysis opens a new methodology for the preparation of symmetrical as well as unsymmetrical biaryls in a user-friendly approach.
Ag(i)-catalyzed carbon–carbon bond formation between a ketone and an allylic C–H bond
作者:Kamalkishore Pati、Rai-Shung Liu
DOI:10.1039/c2cc32205f
日期:——
report a silver-catalyzed cyclization of 1-(2,2-dimethyl-cyclopropyl)methyl ketones to give 1,2,4-trisubstituted benzenes. These reactions comprise an initial cyclopropane cleavage, followed by an aromatization of the resulting 4-en-1-one intermediate. The latter represents an unusual silver-catalyzed addition of a ketone to an allylic C-H bond via a non-carbonyl ene reaction.
Cross-Coupling of ArX with ArMgBr Catalyzed by N-Heterocyclic Carbene-Based Nickel Complexes
作者:Wang-Jun Guo、Zhong-Xia Wang
DOI:10.1021/jo302425x
日期:2013.2.1
N-Heterocyclic carbene-based pincer nickel complexes were synthesized and characterized. These complexes efficiently catalyze cross-coupling of aryl Grignard reagents with aryl chlorides or fluorides under mild conditions.
Novrocik, Jan; Novrocikova, Marta; Titz, Milos, Collection of Czechoslovak Chemical Communications, 1980, vol. 45, # 11, p. 3140 - 3149