Synthesis of N-substituted 2-arylpyrroles by the reaction of (η2-imine)titanium complexes with 3,3-diethoxypropyne

(η2-Imine)Ti(O-i-Pr)2 complexes generated from arylaldehyde imines and a divalent titanium reagent, Ti(O-i-Pr)4/2i-PrMgCl, reacted with 3,3-diethoxypropyne to afford 2-arylpyrroles.