alpha-Aminonitriles inaccessible by traditional Strecker chemistry are obtained in redox-neutral fashion by direct amine alpha-cyanation/N-alkylation or alternatively, alpha-aminonitrile isomerization. These unprecedented transformations are catalyzed by simple carboxylic acids.
Paired Electrolysis for Decarboxylative Cyanation: 4-CN-Pyridine, a Versatile Nitrile Source
作者:Gadde Sathish Kumar、Prashant S. Shinde、Haifeng Chen、Krishnamoorthy Muralirajan、Rajesh Kancherla、Magnus Rueping
DOI:10.1021/acs.orglett.2c01897
日期:2022.9.9
decarboxylative cyanation of amino acids under paired electrochemical reaction conditions has been developed. 4-CN-pyridine was found to be a new and effective cyanation reagent undercatalyst-freeconditions. Mechanistic studies support a nucleophilic reaction pathway, and the cyanation protocol can be applied to diverse substrates including N,N-dialkyl aniline and indole derivatives.
作者:Deepankar Das、Matthew T. Richers、Longle Ma、Daniel Seidel
DOI:10.1021/ol202957d
日期:2011.12.16
alpha-Amino acids react with aldehydes in the presence of a cyanide source to form alpha-amino nitriles in what can be considered a decarboxylative variant of the classical Strecker reaction. This unprecedented transformation does not require the use of a metal catalyst and provides facile access to valuable alpha-amino nitrites that are inaccessible by traditional Strecker chemistry.