articleOrganic LettersJan 1, 2026Closed access

Photocatalytic Access to Cyclopropanes Via Triplet Carbene Transfer from Acceptor-Acceptor Diazoalkanes

MGMengyu GaoCSChuanyang SongXLXintao LiuJZJingjing ZhaoPLPan Li

Henan University · Center for NanoScience

PubMed
Indexed incrossrefpubmed

Abstract

A visible-light photocatalytic cyclopropanation of diverse alkenes using acceptor-acceptor diazoalkanes has been developed. The protocol provides an efficient and practical approach to donor-acceptor cyclopropanes under mild conditions. Experimental evidence confirms a mechanism involving a highly electrophilic triplet acceptor-acceptor carbene intermediate, followed by ultrafast intersystem crossing and ring closure.

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4
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38.81
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100%
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50
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5

Topics & keywords

Topics
Keywords
  • Carbene
  • Intersystem crossing
  • Cyclopropanation
  • Electrophile
  • Photocatalysis
  • Ring (chemistry)
UN Sustainable Development Goals
  • Clean water and sanitation
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