38095-88-4Relevant academic research and scientific papers
Neighboring group participation in organometallic chemistry: Anchimeric assistance in catalyzed arene exchange reactions of (diarylalkane)tricarbonylchromium complexes
Traylor, Teddy G.,Goldberg, Martin J.
, p. 2531 - 2536 (2008/10/08)
Nucleophilic catalysis of the migration of a tricarbonylchromium group from one ring to the other in diarylalkane tricarbonyl derivatives has been observed and compared with catalysis of external exchange. Internal catalysis by a neighboring tricarbonylchromium is also being reported. These results demonstrate the intermediacy of a chromium complex having three carbonyl groups, ketone, and two η2-bound arenes. The consequences of this result for metal exchange reactions are discussed.
Stereoelectronic effects in arene exchange of (arene)tricarbonylchromium complexes: Internal arene exchange and internal arene catalysis of external arene exchange
Traylor, Teddy G.,Goldberg, Martin J.
, p. 2413 - 2416 (2008/10/08)
Kinetics of internal and external arene exchanges in benzene as solvent have been studied with tricarbonylchromium complexes of ditolylmethane, ditolylcyclopropane, dimesitylmethane, and dibenzobicyclo[2.2.2]octadienes. These studies define the stereoelectronic requirements for arene exchange and document the stepwise process in which the bonding in the displaced arene proceeds from η6 to η4 to η2. A new intermediate, (arene)3Cr(CO)3, is indicated by the catalyzed exchange reactions of some of these compounds.
