A copper-catalyzed system for the amidation of carboxylic acids with tert-amines through C–N bond cleavage was developed. This protocol is practical and represents a simple way to produce functionalized amides from basic starting materials in moderate to good yields. A plausible mechanism is proposed for the reaction.
Efficient and accessible silane-mediated direct amide coupling of carboxylic acids and amines
作者:Melissa C. D'Amaral、Nick Jamkhou、Marc J. Adler
DOI:10.1039/d0gc02833a
日期:——
A straightforward method for the direct synthesis of amides from amines and carboxylicacids without exclusion of air or moisture using diphenylsilane with N-methylpyrrolidine has been developed. Various amides are made efficiently, and broad functional group compatibility is shown through a Glorius robustness study. A gram-scale synthesis demonstrates the scalability of this method.
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
The use of polyhedral oligomeric silsesquioxane (POSS) as a soluble support for organic synthesis: A case study with a POSS-bound isocyanate scavenger reagent
作者:Mark York、Richard A. Evans
DOI:10.1016/j.tetlet.2010.07.015
日期:2010.9
The use of polyhedral oligomeric silsesquioxane (POSS) as a solublesupport in organic synthesis is reported. A POSS-bound isocyanate was readily synthesised in one step from commercially available starting materials and was isolated in high yield and purity by simple filtration. It was found to perform well as a scavenger for excess amine in the solution phase synthesis of amides and sulfonamides
N-Heterocyclic Carbene Based Ruthenium-Catalyzed Direct Amide Synthesis from Alcohols and Secondary Amines: Involvement of Esters
作者:Cheng Chen、Yao Zhang、Soon Hyeok Hong
DOI:10.1021/jo201756z
日期:2011.12.16
N-heterocyclic carbene based ruthenium complex was developed as a highly active precatalyst for the directamidesynthesisfromalcohols and secondary amines. Notably, reaction of 1-hexanol and dibenzylamine afforded 60% of the corresponding amide using our catalytic system, while no amide formation was observed for this reaction with the previously reported catalytic systems. Unlike the previously reported