A Copper-Catalyzed Tandem Synthesis of Indolo- and Pyrrolo[2,1-<i>a</i>]isoquinolines
作者:Akhilesh Kumar Verma、Tanay Kesharwani、Jaspal Singh、Vibha Tandon、Richard C. Larock
DOI:10.1002/anie.200804427
日期:2009.1.26
Isoquinoline ring the changes: A novel strategy for the title reaction involves ortho‐haloarylalkynes which undergo sequential intermolecular addition of N heterocycles onto alkynes and subsequent intramolecular ring closure by arylation. The process involves the use of hydroxymethyl benzotriazole as an efficient and inexpensive ligand for the CN and CC coupling reactions.
Ru(<scp>ii</scp>)-catalyzed oxidative coupling of sulfoxonium ylides with amines: efficient synthesis of α-ketoamides and indolo[2,1-<i>a</i>]isoquinolines
The first use of sulfoxonium ylides for the synthesis of α-ketoamides is described via a Ru(II)-catalyzed amidation reaction with amines. The same Ru(II)-catalyzed reaction of sulfoxonium ylides with 2-phenylindoles provided indolo[2,1-a]isoquinolines instead of α-ketoamides.
通过Ru( II ) 催化的与胺的酰胺化反应,描述了氧化亚硝叶立德首次用于合成 α-酮酰胺。相同的 Ru( II ) 催化的氧化锍叶立德与 2-苯基吲哚的反应提供了吲哚[2,1- a ] 异喹啉而不是 α-酮酰胺。