Anionic [4+2] cycloaddition reactions of indole-2,3-dienolate with dienophiles: A facile regiospecific route to substituted carbazoles
作者:Mandava V. Basaveswara Rao、Janagani Satyanarayana、Hiriyakkanavar Ila、Hiriyakkanavar Junjappa
DOI:10.1016/0040-4039(95)00488-x
日期:1995.5
3-dienolate derived by deprotonation of 1,2-dimethylindole-3-carboxaldehyde is shown to be useful 1,4-dipole synthon (anionic indolo-2,3-quinodimethane) which undergoes facile cycloaddition with wide range of dienophiles affording substituted carbazoles in highly regiospecific fashion.
通过1,2-二甲基吲哚-3-羧醛的去质子化反应得到的吲哚2,3-二壬酸酯被证明是有用的1,4-偶极合成子(阴离子吲哚-2,3-喹二甲烷),它可以进行容易的环加成反应,并具有广泛的亲二烯体。以高度区域特异性的方式取代咔唑。