142362-62-7Relevant articles and documents
Exploring the border between concerted and two-step pathways of 1,3-dipolar cycloadditions of organic azides to cyclic ketene N,X-acetals - Synthesis and15N-NMR spectra of zwitterions and spirocyclic cycloadducts
Quast, Helmut,Ach, Manfred,Balthasar, Juergen,Hergenroether, Thomas,Regnat, Dieter,Lehmann, Jens,Banert, Klaus
, p. 1589 - 1609 (2005)
Cyclic ketene N,X-acetals 1 are electron-rich dipolarophiles that undergo 1,3-dipolar cycloaddition reactions with organic azides 2 ranging from alkyl to strongly electron-deficient azides, e.g., picryl azide (2L; R1 = 2,4,6-(NO2)su