CuI-Catalyzed Selective 3-Alkylation of Indoles with <i>N</i>
-Tosylhydrazones and the I<sub>2</sub>
-Mediated Further Cyclization to Chromeno[2,3-<i>b</i>
]Indoles
作者:Chun-Bao Miao、Yan-Fang Sun、He Wu、Xiao-Qiang Sun、Hai-Tao Yang
DOI:10.1002/adsc.201800206
日期:2018.7.4
The CuI‐catalyzed reaction of indoles with N‐tosylhydrazones derived from the ortho‐/para‐hydroxybenzaldhydes affords selectively the C‐3 alkylated products rather than the N‐alkylated products. In addition, the I2‐mediated cyclization of the generated C‐3 alkylated products allows the concise synthesis of chromeno[2,3‐b]indole derivatives.
吲哚与碘化亚铜催化反应Ñ -tosylhydrazones从派生邻- /对-hydroxybenzaldhydes得到选择性地将Ç -3烷基化产物,而不是Ñ烷基化产品。此外,生成的C-3烷基化产物的I 2介导的环化反应可简化chromeno [2,3- b ]吲哚衍生物的合成。