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Wereportedpreviouslythatchiral2.5-piperainedionederivedfrom(S)-prolinecanonlyforma1:2inclusioncompoundwithracemic1.1’-bi-2-naphthol1.Onthebasisofthisfact.weimagedthatitwouldbeabletomeetwithsuccesstoenrichtheexcessenantiomerfromthe1,1’-bi-2-naphtholoflower