Abstract The first known lithiated 1-azafulvene derivatives were generated by low- temperature halogen/metal interchange, with t-BuLi, from the corresponding brominated 6- diisopropylamino compounds 3b and 12. These Li species reacted with sundry eletrophilic reagents to give products which, on basic hydrolysis, were converted into 5-mono-or 4, 5- disubstituted pyrrole-2-carbaldehydes 10 and 16, respectively.
