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Lett."},{"key":"ref26\/cit26","unstructured":"Two mechanisms may be responsible for the failure: (1) intramolecular 1,3-dipolar cycloaddition of the propargyl azide followed by MeOH attack on the resulting strained bicyclic triazole or (2) a triaza-Cope rearrangement followed by cyclization of the resulting allenyl azide to triazafulvene and reaction with MeOH. See:"},{"key":"ref26\/cit26a","doi-asserted-by":"crossref","first-page":"911","DOI":"10.1002\/cber.19891220520","volume":"122","author":"Banert K.","year":"1989","journal-title":"Chem. Ber."},{"key":"ref26\/cit26b","doi-asserted-by":"crossref","first-page":"1963","DOI":"10.1002\/cber.19891221022","volume":"122","author":"Banert K.","year":"1989","journal-title":"Chem. 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