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.
A Highly Active System for the Metal-Free Aerobic Photocyanation of Tertiary Amines with Visible Light: Application to the Synthesis of Tetraponerines and Crispine A
作者:Julio Cesar Orejarena Pacheco、Alexander Lipp、Alexander M. Nauth、Fabian Acke、Jule-Philipp Dietz、Till Opatz
DOI:10.1002/chem.201504845
日期:2016.4.4
A highly efficient metal‐free catalytic system for the aerobic photocyanation of tertiary amines with visiblelight is reported. The use of air as terminal oxidant offers an improved safety profile compared with pure oxygen, the used compact fluorescent lamp (CFL) light sources are highly economical, and no halogenated solvents are required. This system not only proves to be effective for a wide variety
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.