[C:1]([O:4][C:5]1[CH:14]=[CH:13][C:12]2[C:7](=[CH:8][CH:9]=[CH:10][CH:11]=2)[C:6]=1[C:15]1[C:24]2[C:19](=[CH:20][CH:21]=[CH:22][CH:23]=2)[CH:18]=[CH:17][C:16]=1OC=C)(=[O:3])[CH3:2].O>CO.C1COCC1>[C:1]([O:4][C:5]1[C:6]([C:15]2[C:24]3[C:19](=[CH:20][CH:21]=[CH:22][CH:23]=3)[CH:18]=[CH:17][CH:16]=2)=[C:7]2[C:12](=[CH:13][CH:14]=1)[CH:11]=[CH:10][CH:9]=[CH:8]2)(=[O:3])[CH3:2]30.4 mg (0.086 mmol) of 2-acetyloxy-2′-vinyloxy1,1′-binaphthyl and 2.8 mg (0.004 mmol) of Co (OAc) (L3) were dissolved in 90 μl of a mixed solvent (2:1) of methanol and THF under the atmosphere and 8 μl (0.44 mmol) of water was added to the mixture, and the mixture was then stirred at 0° C. After 10 hours, the reaction solution was analyzed by HPLC, to find that 66% of the 2-acetyloxy-2′-vinyloxy1,1′-binaphthyl was left with an optical purity of 44% ee. Further, the reaction solution was purified by silica gel column chromatography to obtain the reaction product O-acetylbinaphthol in a yield of 34%. Also, the kre1 value showing the selectivity of reactions at this time was 20.7.
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