Synthesis of Polysubstituted 3-Chalcogenated Indoles through Copper(I) Iodide-Catalyzed Three-Component Domino Reactions
作者:Feng Liu、Rui Gou、Yi Zhang、Sheng-wei Wu
DOI:10.1055/s-0037-1611691
日期:2019.1
Polysubstituted 3-chalcogenated indoles were synthesized by a three-component, one-pot, domino reaction of a N-(2-bromophenyl)trifluoroacetamide, a 1-alkyne, a disulfides or diselenides, CuI, and proline in DMF. In this process, tandem Sonogashira coupling, N-cyclization, and sulfenyl/selenyl electrophilic substitution occurred sequentially and smoothly to form the anticipated products in good to excellent
多取代的 3-硫族化吲哚是通过 N-(2-溴苯基) 三氟乙酰胺、1-炔、二硫化物或二硒化物、CuI 和脯氨酸在 DMF 中的三组分、一锅、多米诺反应合成的。在该过程中,串联 Sonogashira 偶联、N-环化和亚苯基/硒基亲电取代依次顺利进行,以良好至极好的收率形成预期产物(20 个实例;65-96%)。值得注意的是,该催化体系中没有使用钯催化剂,支持其成本效益和潜在的工业应用。