Anionic [4+2] cycloaddition strategy in the regiospecific synthesis of carbazoles: formal synthesis of ellipticine and murrayaquinone A
作者:Dipakranjan Mal、Bidyut Kumar Senapati、Pallab Pahari
DOI:10.1016/j.tet.2007.02.060
日期:2007.4
Anionic [4+2] cycloaddition of furoindolones (e.g., 7 and 10) has been developed as an effective means to the synthesis of carbazoles. This reaction has been shown to be feasible with a wide variety of Michael acceptors to give carbazoles and fused carbazoles in good yields. The scope and limitations of the reaction have been briefly studied. The nature of N-protection of the furoindolones (cf. 7)
呋喃吲哚酮(例如7和10)的阴离子[4 + 2]环加成已被开发为咔唑合成的有效手段。已经表明该反应对于多种迈克尔受体是可行的,以高收率得到咔唑和稠合咔唑。已经简要研究了反应的范围和局限性。呋喃吲哚酮的N-保护性质(参见7)在环切成功中起着重要作用。