Copper promoted N-arylation of methyl 4-amino-3-iodobenzoate with boronic acids followed by Pd-catalyzed intramolecular CâH arylation provides an efficient route to methyl carbazole-3-carboxylate derivatives. This methodology was implemented in the synthesis of naturally occurring carbazole alkaloids clausine C, clausine H, clausine L, clausenalene, glycozoline, glycozolidine, glycozolidal and sansoakamine.
铜促进
4-氨基-3-碘苯甲酸甲酯与
硼酸的 N-芳基化反应,然后在 Pd 催化下进行分子内 CâH 芳基化反应,为获得
咔唑-3-羧酸甲酯衍
生物提供了一条有效途径。在合成天然
咔唑生物碱 Clausine C、Clausine H、Clausine L、Clausenalene、glycozoline、glycozolidine、glycozolidal 和 sansoakamine 的过程中采用了这种方法。