50720-98-4Relevant articles and documents
Electrochemical glycosylation in the presence of a catalytic chemical mediator
Drouin, Ludovic,Compton, Richard G.,Fairbanks, Antony J.
, p. 516 - 522 (2008)
Electrochemical glycosylation of thioglycoside donors proceeds efficiently in an undivided cell in the presence of a catalytic amount of the chemical mediator (4-bromophenyl) ammoniumyl hexachloroantimonate (BAHA). In comparison with electrochemical glyco
Conversion of amides to esters by the nickel-catalysed activation of amide C-N bonds
Hie, Liana,Fine Nathel, Noah F.,Shah, Tejas K.,Baker, Emma L.,Hong, Xin,Yang, Yun-Fang,Liu, Peng,Houk,Garg, Neil K.
, p. 79 - 83 (2015/08/18)
Amides are common functional groups that have been studied for more than a century. They are the key building blocks of proteins and are present in a broad range of other natural and synthetic compounds. Amides are known to be poor electrophiles, which is typically attributed to the resonance stability of the amide bond. Although amides can readily be cleaved by enzymes such as proteases, it is difficult to selectively break the carbon-nitrogen bond of an amide using synthetic chemistry. Here we demonstrate that amide carbon-nitrogen bonds can be activated and cleaved using nickel catalysts. We use this methodology to convert amides to esters, which is a challenging and underdeveloped transformation. The reaction methodology proceeds under exceptionally mild reaction conditions, and avoids the use of a large excess of an alcohol nucleophile. Density functional theory calculations provide insight into the thermodynamics and catalytic cycle of the amide-to-ester transformation. Our results provide a way to harness amide functional groups as synthetic building blocks and are expected to lead to the further use of amides in the construction of carbon-heteroatom or carbon-carbon bonds using non-precious-metal catalysis.
Protecting group and solvent effects in electrochemical glycosylation
Drouin, Ludovic,Compton, Richard G.,Fietkau, Nicole,Fairbanks, Antony J.
, p. 2711 - 2717 (2008/02/13)
An investigation is undertaken into the roles of protecting groups and the solvent in the electrochemical-mediated glycosylation of manno thioglycosides. Herein notable differences are observed between electrochemical and chemical glycosylation. Georg Thi
