A complex of formula (1),
wherein, M is palladium or nickel, R1 and R2 are independently organic groups having 1-20 carbon atoms, or R1 and R2 are linked to form a ring structure with the phosphorus atom, R3 is selected from the group consisting of substituted and unsubstituted aryl, substituted and unsubstituted heteroaryl, and substituted and unsubstituted metallocenyl, R4 is an organic group having 1-20 carbon atoms, n is 0, 1, 2, 3, 4 or 5, X is an anionic ligand. A process for the preparation of the complex, and its use in carbon-carbon or carbon-nitrogen coupling reactions is also provided.
A complex of formula (1),
wherein, M is palladium or nickel, R
1
and R
2
are independently organic groups having 1-20 carbon atoms, or R
1
and R
2
are linked to form a ring structure with the phosphorus atom, R
3
is selected from the group consisting of substituted and unsubstituted aryl, substituted and unsubstituted heteroaryl, and substituted and unsubstituted metallocenyl, R
4
is an organic group having 1-20 carbon atoms, n is 0, 1, 2, 3, 4 or 5, X is an anionic ligand. A process for the preparation of the complex, and its use in carbon-carbon or carbon-nitrogen coupling reactions is also provided.
Palladium-Catalyzed α-Arylation of Aldehydes with Bromo- and Chloroarenes Catalyzed by [{Pd(allyl)Cl}2] and dppf or Q-phos
作者:Giang D. Vo、John F. Hartwig
DOI:10.1002/anie.200705357
日期:2008.2.28
α‐Arylation, α‐Arylative Esterification, or Acylation: A Stoichiometry‐Dependent Trichotomy in the Pd‐Catalyzed Cross‐Coupling between Aldehydes and Aryl Bromides
作者:Pradeep Nareddy、Clément Mazet
DOI:10.1002/asia.201300724
日期:2013.11
Three′s company: The selective α‐arylation and α‐arylativeesterification of linear and branched aldehydes is reported for a variety of bromoarenes. The acylation of arylbromides can be achieved with linear aldehydes (see scheme). All these transformations were performed with a single [(N‐heterocyclic carbene)Pd] catalyst through adjustment of the stoichiometry of the reagents and the appropriate