Synthesis of cyclopropanes via palladium-catalyzed [2+1] annulations of sulfoxonium ylides and norbornenes†
Wenguang
Li, 
*a
Yongqi
Yu,
a
Heyun
Sheng,
a
Ming
Chen,
a
Wenchao
Gao,
a
Xu
Zhang,
a
Fengyun
Su
*a
and
Ting
Li
*a
*a
Yongqi
Yu,
a
Heyun
Sheng,
a
Ming
Chen,
a
Wenchao
Gao,
a
Xu
Zhang,
a
Fengyun
Su
*a
and
Ting
Li
*a
Abstract
A novel and efficient cyclopropanation reaction of sulfoxonium ylides with norbornene (NBE) derivatives catalyzed by a palladium catalyst has been realized. Such a conversion provides access to a range of cyclopropane-fused norbornene skeletons with exclusive selectivity using sulfoxonium ylides as the carbene precursors.
![Graphical abstract: Synthesis of cyclopropanes via palladium-catalyzed [2+1] annulations of sulfoxonium ylides and norbornenes](/as/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=D5CC02783G&imageInfo.ImageIdentifier.Year=2025)
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