Ruthenium-Catalyzed <i>N</i>-Alkylation of Amines with Alcohols under Mild Conditions Using the Borrowing Hydrogen Methodology
作者:Arrey B. Enyong、Bahram Moasser
DOI:10.1021/jo501273t
日期:2014.8.15
Using a simple amino amide ligand, ruthenium-catalyzed one-pot alkylation of primary and secondary amines with simple alcohols was carried out under a wide range of conditions. Using the alcohol as solvent, alkylation was achieved under mild conditions, even as low as room temperature. Reactions occurred with high conversion and selectivity in many cases. Reactions can also be carried out at high temperatures
Elaboration of the ether cleaving ability and selectivity of the classical Pearlman's catalyst [Pd(OH)2/C]: concise synthesis of a precursor for a myo-inositol pyrophosphate
作者:Alson Mart、Mysore S. Shashidhar
DOI:10.1016/j.tet.2012.09.016
日期:2012.11
The cleavage of propargyl, allyl, benzyl, and PMB ethers by Pd(OH)2/C can be tuned in that order, by varying the reaction conditions. Other moieties such as C–C double bonds, esters, trityl ether, p-bromo and p-nitrobenzyl ethers are stable to these reaction conditions. Cleavage of allyl ethers can be made catalytic by using 1:1 mixture of Pd(OH)2/C and Pd/C. The synthetic potential of the selective
Nickel-Catalyzed Alkylarylation of Activated Alkenes with Benzyl-amines via C−N Bond Activation
作者:Hui Yu、Bin Hu、Hanmin Huang
DOI:10.1002/chem.201800543
日期:2018.5.17
A nickel‐catalyzed alkylarylation of active alkenes with tertiary benzylamines was achieved by charge‐transfer‐complex promoted C−N bond activation. The reaction proceeded through initial Ni‐catalyzed C−N bond activation, followed by sequential radical addition, redox and proton abstraction with cleaved amine moiety in the absence of oxidant, and provides an efficient method to prepare various alkyl‐substituted
BF<sub>3</sub>·Et<sub>2</sub>O as a metal-free catalyst for direct reductive amination of aldehydes with amines using formic acid as a reductant
作者:Zhenli Luo、Yixiao Pan、Zhen Yao、Ji Yang、Xin Zhang、Xintong Liu、Lijin Xu、Qing-Hua Fan
DOI:10.1039/d1gc01468d
日期:——
direct reductive amination of aldehydes with amines using formic acid as a reductant under the catalysis of inexpensive BF3·Et2O has been developed. A wide range of primary and secondary amines and diversely substitutedaldehydes are compatible with this transformation, allowing facile access to various secondary and tertiary amines in high yields with wide functional group tolerance. Moreover, the
Charge-Transfer Complex Promoted C–N Bond Activation for Ni-Catalyzed Carbonylation
作者:Hui Yu、Bao Gao、Bin Hu、Hanmin Huang
DOI:10.1021/acs.orglett.7b01488
日期:2017.7.7
A new strategy was developed for activation of C–N bond via formation of an amine–I2 charge-transfer complex, which facilitates the inert C–N bond activation via oxidative addition with Ni(0). This strategy has been successfully applied in the Ni-catalyzed carbonylation of benzylamines via direct insertion of CO into the C–N bond, which provided a straightforward and rapid approach to arylacetamides