Trennung der Enantiomeren von (S,R)-1,1′-Bi-2,2′-naphthyl-hydrogenphosphat mittels (1R, 2R)- bzw. (1S,2S)-2-Amino-1-(4-nitrophenyl)-propan-1,3-diol

Resolution of the Enantiomers of (S,R)-1,1′-Bi-2,2′-naphthylhydrogenphosphate by (1R,2R)- and (1S,2S)-2-Amino-1-(4-nitrophenyl)-propane-1,3-diol The resolution of the diastereoisomeric salts of the title compounds was possible in the presence of a ketone, especially acetone, which forms oxazolidines ( 3a–d ) with the chiral bases. These oxazolidines afforded separable salts with the (S,R)-1,1′-Bi-2,2′-naphthylhydrogenphosphate ( 4 ). The structures of these salts were proved by m.s. and n.m.r. spectroscopy.