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The synthesis of four new 2,3-dialkylpiperazines in yields of 70–99% using (R)-(−)-phenylglycinol as a chiral inductor is described. The synthesis involved reduction of the oxazino–oxazine type derivatives obtained by condensation of glyoxal and phenylglycinol to give hydroxyethylenediamine precursors which were further condensed with glyoxal, butanedione and 1-phenyl-1,2-propanedione and then reduced...