Tetrahedron Asymmetry p. 2123 - 2126 (1995)
Update date:2022-08-11
Topics:
Hu
Vitharana
Pu
An efficient and practical method to directly resolve racemic 1,1'-bi-2-naphthol, rac-1, into optically pure R and S-1 has been developed by modification of a N-benzylcinchonidium chloride resolution procedure. In a typical experiment, 60 g of rac-1 is resolved to give 22.5 g of R-1 (75%, >99% ee) and 21 g of S-1 (70%, >99% ee). The chiral resolving agent, (8S,9R)-(-)-N-benzylcinchonidinium chloride, 2, is recovered in 80% yield.
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