| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel method for preparation of CDON with a reduced proportion of CDAN in CDON as a final product.SOLUTION: The present invention provides a process for preparing CDON by a reaction route I, comprising a. epoxidizing CDEN to CDAN epoxide, and b. rearranging the CDAN epoxide to CDON while obtaining a mixture comprising CDAN, wherein CDAN is separated from the CDON-containing mixture and oxidized to CDON.SELECTED DRAWING: Figure 1 |
