Synthesis of Carbazoles by Gold(I)-Catalyzed Carbocyclization of 2-(Enynyl)indoles
作者:Paramasivan Perumal、Chandrasekaran Praveen
DOI:10.1055/s-0030-1259537
日期:2011.3
carbazoles through gold(I)-catalyzed intramolecular hydroarylation of (Z)-2-(enynyl)indoles was achieved in good yields. The requisite (Z)-2-(enynyl)indoles were synthesized stereoselectively by trimethylgallium-promoted, Z-selective Wittig olefination of N-alkylindole-2-carboxaldehydes with propargyl ylides. Substrates possessing both alkyl as well as aromatic groups are well tolerated under these reaction
通过金(I)催化的(Z)-2-(烯基)吲哚的分子内加氢芳基化实现了咔唑的新合成方案,收率良好。必需的 (Z)-2-(烯炔基) 吲哚是通过三甲基镓促进的、Z-选择性 Wittig 烯化 N-烷基吲哚-2-甲醛与炔丙基叶立德的立体选择性合成的。在这些反应条件下,具有烷基和芳族基团的底物具有良好的耐受性。