Successive diarylation at the carbon positions (2/4 and 2/5) of 1H-imidazole and its application to the total synthesis of nortopsentin D
作者:Ikuo Kaswasaki、Masayuki Yamashita、Shunsaku Ohta
DOI:10.1039/c39940002085
日期:——
Nortopsentin D, an antifungal 2,4-diinodolylimidazole, is synthesized by use of a successive and regioselective diarylation, in which N-protected 2,4,5-tri- and 4,5-di-bromoimidazole derivatives are treated with N-silylated 3-indolylboric acid in the presence of a palladium(o) catalyst.
Nortopsentin D 是一种抗真菌的 2,4-二吲哚基咪唑,它是通过连续和区域选择性二芳基化反应合成的。在这种反应中,N 保护的 2,4,5- 三溴咪唑和 4,5- 二溴咪唑衍生物与 N-硅烷化的 3-吲哚硼酸在钯(邻)催化剂存在下进行处理。