Synthesis and stereochemical assignments of diastereomeric Ni(II) complexes of glycine Schiff base with (R)-2-(N-{2-[N-alkyl-N-(1-phenylethyl)amino]acetyl}amino)benzophenone; A case of configurationally stable stereogenic nitrogen. 
Beilstein J. Org. Chem. 2014, 10, 442–448. DOI: 10.3762/bjoc.10.41
 
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