24333-41-3Relevant academic research and scientific papers
Nickel-Catalyzed Esterification of Aliphatic Amides
Hie, Liana,Baker, Emma L.,Anthony, Sarah M.,Desrosiers, Jean-Nicolas,Senanayake, Chris,Garg, Neil K.
, p. 15129 - 15132 (2016)
Recent studies have demonstrated that amides can be used in nickel-catalyzed reactions that lead to cleavage of the amide C?N bond, with formation of a C?C or C?heteroatom bond. However, the general scope of these methodologies has been restricted to amides where the carbonyl is directly attached to an arene or heteroarene. We now report the nickel-catalyzed esterification of amides derived from aliphatic carboxylic acids. The transformation requires only a slight excess of the alcohol nucleophile and is tolerant of heterocycles, substrates with epimerizable stereocenters, and sterically congested coupling partners. Moreover, a series of amide competition experiments establish selectivity principles that will aid future synthetic design. These studies overcome a critical limitation of current Ni-catalyzed amide couplings and are expected to further stimulate the use of amides as synthetic building blocks in C?N bond cleavage processes.
1-(o-NITROPHENYLSULPHONYLOXY)BENZOTRIAZOLE, REAGENT FOR THE CONDENSATION OF CARBOXYLIC ACIDS WITH AMINES
Topuzyan, V. O.,Martirosyan, M. S.
, p. 2148 - 2153 (2007/10/02)
With the Schotten-Baumann reaction we have synthesized 1-(o-nitrophenylsulfonyloxy)benzotriazole and have shown its suitability for the synthesis of esters of 1-hydroxybenzotriazole and carboxylic amides, and also of peptides.
