α-Imino Iridium Carbenes from Imidoyl Sulfoxonium Ylides: Application in the One-Step Synthesis of Indoles

被引：54

作者：

Caiuby, Clarice A. D. ^{[1
]}

de Jesus, Matheus P. ^{[1
]}

Burtoloso, Antonio C. B. ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

来源：

JOURNAL OF ORGANIC CHEMISTRY | 2020年 / 85卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

HIGHLY SUBSTITUTED PYRROLES; DIAZO OXIME ETHERS; C-H ANNULATION; TITANIUM TETRACHLORIDE; ASYMMETRIC-SYNTHESIS; OXOSULFONIUM YLIDES; EXPEDIENT SYNTHESIS; DIVERGENT SYNTHESIS; CATALYZED REACTIONS; ORGANIC-SYNTHESIS;

D O I：

10.1021/acs.joc.0c00833

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Imidoyl sulfoxonium ylides are presented for the first time as potential precursors to generate alpha-imino metal-carbene intermediates and applied in direct C-H functionalization reactions catalyzed by [Ir(cod)Cl](2) (4 mol %) to provide 2-substituted indoles (up to 70% yield) in just one step. This class of sulfur ylide is successfully obtained from imidoyl chloride and dimethylsulfoxonium methylide (23 new examples in 45-85% yield) or by imino group formation from the corresponding beta-keto sulfoxonium ylides and anilines in the presence of TiCl4 as a Lewis acid (9 examples in 33-94% yield).

引用

页码：7433 / 7445

页数：13

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