Inclusion reaction of reaction 1, 1’-bi-2-naphthol and (S)-proline was examined uuder the solid state and the solid-liquid conditions. The results indicated that a solid mixture of racemic 1, 1’-bi-2-naphthol and (S)-proline in a 1 : 1 molar ratio was kept at 50-80 for 3-4 h, followed by treatment with benzene to give an insoluble solid and a benzene solution, from which (S)- (- )- and (R)-(+)-1, 1’-bi-2-naphthols of a modest level or optical purity were obtained. Arter “kinetic” crystallization, both essentially enantiopure iso- mers were provided in 15%-35 % overall yields ,respectively. Inclusion reaction of reaction 1, 1’-bi-2-naphthol and (S) -proline was examined uuder the solid state and the solid-liquid conditions. The results indicated that a solid mixture of racemic 1, 1’-bi- 2 -naphthol and (S) -proline in a 1: 1 molar ratio was kept at 50-80 for 3-4 h, followed by treatment with benzene to give an insoluble solid and a benzene solution, from which (S) - (- Arter “kinetic ” crystallization, both essential enantiopure iso-mers were provided in 15%> - (+) - 1, 1’-bi-2-naphthols of a modest level or optical purity were obtained. -35% overall yields, respectively.