Abstract
Reactions of Complex Ligands, LXII[1]. – Synthesis of Carbene Carbonyl Isonitrile Complexes of Chromium and Their Annulation Reaction with Alkynes1,1,3,3‐Tetramethylbutyl isocyanide (3a) and 2,6‐dimethylphenyl isocyanide (3b) react with the tetracarbonyl chelate carbene complex 2 to give the tetracarbonyl isocyanide carbene complexes 4a and 4b. Thermal decarbonylation leads to the tricarbonyl isocyanide chelate carbene complexes 5a and 5b. Upon reaction with 3‐hexyne they undergo an annulation to give the dicarbonyl indene complexes 6a and 6b.
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