| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing optically active 3,4- dihydroxybutanoic acid in a good yield in a high optical purity and at a low cost by using an easily available resolving agent. SOLUTION: This method for optically resolving (±)-3,4-dihydroxybutanoic acid comprises treating the (±)-3,4-dihydroxybutanoic acid with an optically active primary or secondary amine. A method for producing optically active 3-hydroxy-γ-butyrolactone comprises treating the (±)-3,4-dihydroxybutanoic acid with the optically active primary or secondary amine and subsequently subjecting the obtained optically active 3,4-dihydroxybutanoic acid to a ring- closing reaction. |
