Successive formation of enaminoketene and arenetricarbonyl nitrogen ylid chromium complexes during intramolecular alkyne insertions into aminocarbene complexes

Article abstract of DOI:10.1016/0022-328X(91)86184-R

Upon heating, alkyne(aminocarbene) complexes <(CO)5CrC(NR₁R₂)CH2)3C<*>CPh>> undergo an intramolecular insertion reaction to give, first, complexes containing enaminoketene coordinated to Cr(CO)3, and then arene tricarbonyl chromium n