The first example of base‐metal‐catalysed synthesis of amides from the coupling of primary amines with either alcohols or esters is reported. The reactions are catalysed by a new manganese pincercomplex and generate hydrogen gas as the sole byproduct, thus making the overall process atom‐economical and sustainable.
Acetic acid as a catalyst for the N-acylation of amines using esters as the acyl source
作者:Daniel D. Sanz Sharley、Jonathan M. J. Williams
DOI:10.1039/c6cc09023k
日期:——
We report a cheap and simple method for the acetylation of a variety of amines using catalytic acetic acid and either ethylacetate or butyl acetate as the acyl source....
我们报告了一种廉价而简单的方法,该方法使用催化乙酸和乙酸乙酯或乙酸丁酯作为酰基源来乙酰化各种胺。
Ruthenium-catalysed oxidation of alcohols to amides using a hydrogen acceptor
作者:Andrew J.A. Watson、Russell J. Wakeham、Aoife C. Maxwell、Jonathan M.J. Williams
DOI:10.1016/j.tet.2014.04.017
日期:2014.6
A wider investigation into the synthesis of secondary amides from primary alcohols using a hydrogen acceptor using commercially available [Ru(p-cymene)Cl-2](2) with bis(diphenylphosphino)butane (dppb) as the catalyst. The report looks at over 50 examples with varying functionality and steric bulk, whilst also covering the first reported results using microwave heating to effect the transformation. (C) 2014 Elsevier Ltd. All rights reserved.
Direct amide formation from unactivated carboxylic acids and amines
作者:C. Liana Allen、A. Rosie Chhatwal、Jonathan M. J. Williams
DOI:10.1039/c1cc15210f
日期:——
The directcoupling of unactivated carboxylicacids with amines can be performed in toluene 110 degrees C in the absence of catalyst. The use of simple zirconium catalysts at 5 mol% loading gave amide formation in as little as 4 h.