of ynones and benzylidenepyrazolones has been developed. This process resulted finally in the formation of eight-membered cyclic ethers in moderate to good yields. The easy availability of starting materials and the simple cyclization procedure make this approach suitable for the preparation of a wide range of useful oxocino [2,3-c] pyrazoles.
已经开发出有效的
DBU促进的炔酮和亚苄基
吡唑并酮的[4 + 4]多米诺环化反应。该过程最终导致中等至良好产率的八元
环醚的形成。起始原料的容易获得和简单的环化程序使该方法适合于制备各种有用的氧代[2,3- c ]
吡唑。