N-Atom Deletion in Nitrogen Heterocycles

Haitao Qin, Wangshui Cai, Shuang Wang, Ting Guo, Guigen Li, Hongjian Lu

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Excising the nitrogen in secondary amines, and coupling the two residual fragments is a skeletal editing strategy that can be used to construct molecules with new skeletons, but which has been largely unexplored. Here we report a versatile method of N-atom excision from N-heterocycles. The process uses readily available N-heterocycles as substrates, and proceeds by N-sulfonylazidonation followed by the rearrangement of sulfamoyl azide intermediates, providing various cyclic products. Examples are provided of deletion of nitrogen from natural products, synthesis of chiral O-heterocycles from commercially available chiral β-amino alcohols, formal inert C−H functionalization through a sequence of N-directed C−H functionalization and N-atom deletion reactions in which the N-atom can serve as a traceless directing group.

Original languageEnglish
Pages (from-to)20678-20683
Number of pages6
JournalAngewandte Chemie - International Edition
Issue number38
StatePublished - Sep 13 2021


  • C−C coupling
  • C−N bond cleavage
  • N-atom deletion
  • N-heterocycles
  • skeletal editing


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