Abstract
This review article critically discusses examples of asymmetric synthesis of tailor-made α-amino acids via homologation of Ni(II) complexes of glycine and alanine Schiff bases, reported in the literature from 2013 through the end of 2016. Where it is possible, reaction mechanism and origin of the stereochemical outcome is discussed in detail. Special attention is given to various aspects of practicality and scalability of the reported methods. Among the most noticeable developments in this area are novel designs of axially chiral ligands, application of electro- and mechano-chemical (ball-milling) conditions, and development of dynamic kinetic resolution procedures.
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