Iridium-Catalyzed X−H Insertions of Sulfoxonium Ylides
摘要:
The unique reactivity of sulfoxonium ylides as a carbene source is described for a variety of X-H bond insertions, taking advantage of a simple, commercially available iridium catalyst. This method has applications in both intra- and intermolecular reactivity, including a practical ring-expansion strategy for lactams. The safety and stability of sulfoxonium ylides recommend them as preferable surrogates to traditional diazo ketones and esters.
Iridium-Catalyzed X−H Insertions of Sulfoxonium Ylides
摘要:
The unique reactivity of sulfoxonium ylides as a carbene source is described for a variety of X-H bond insertions, taking advantage of a simple, commercially available iridium catalyst. This method has applications in both intra- and intermolecular reactivity, including a practical ring-expansion strategy for lactams. The safety and stability of sulfoxonium ylides recommend them as preferable surrogates to traditional diazo ketones and esters.
Electrochemical Stereoselective Synthesis of Polysubstituted 1,4-dicarbonyl Z-Alkenes via Three-Component Coupling of Sulfoxonium Ylides, Alkynes with Water
The first straightforward strategy for the synthesis of 1,4-dicarbonyl Z-alkenes has been developed via an electrochemical cross-coupling reaction of sulfoxonium ylides and alkynes with water. The metal-free protocol showed an easy-to-handle nature, good functional group tolerance, and high Z-stereoselectivity, which is rare in previous cases. The proposed reaction mechanism was convincingly established
Iridium-Catalyzed X−H Insertions of Sulfoxonium Ylides
作者:Ian K. Mangion、Ikenna K. Nwamba、Michael Shevlin、Mark A. Huffman
DOI:10.1021/ol901298p
日期:2009.8.20
The unique reactivity of sulfoxonium ylides as a carbene source is described for a variety of X-H bond insertions, taking advantage of a simple, commercially available iridium catalyst. This method has applications in both intra- and intermolecular reactivity, including a practical ring-expansion strategy for lactams. The safety and stability of sulfoxonium ylides recommend them as preferable surrogates to traditional diazo ketones and esters.