Reactions of Unsaturated Azides, 6. Synthesis of 1,2,3‐Triazoles from Propargyl Azides by Rearrangement of the Azido Group. – Indication of Short‐Lived Allenyl Azides and Triazafulvenes
Abstract Treatment of 3‐bromo3‐methyl‐1‐butyne ( 1 ) or 1‐iodo‐3‐methyl‐1,2‐butadiene ( 3 ) with solutions of sodium azide affords 3‐azido‐3‐methyl‐1‐butyne ( 5 ) which reacts a...