Indenyl rhodium complexes. Synthesis and catalytic activity in reductive amination using carbon monoxide as a reducing agent

• Published in: Journal of organometallic chemistry Vol. 867; pp. 106 - 112
• Main Authors: Runikhina, Sofiya A., Arsenov, Mikhail A., Kharitonov, Vladimir B., Sovdagarova, Elizaveta R., Chusova, Olga, Nelyubina, Yulia V., Denisov, Gleb L., Usanov, Dmitry L., Chusov, Denis, Loginov, Dmitry A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15-07-2018
• Subjects: Amines; Carbon monoxide; Indenyl rhodium; Reductive amination; Water-gas shift reaction; Reductive amination; Amines; Carbon monoxide; Indenyl rhodium; Water-gas shift reaction
• ISSN: 0022-328X; 1872-8561
• DOI: 10.1016/j.jorganchem.2017.11.003

Indenyl-ligated rhodium(III) catalyst [(η5-indenyl)RhX2]n (1) is reported for the synthesis of alkylated amines via catalytic reductive amination using carbon monoxide as a reducing agent. Water as a solvent was found to be the best media for the reaction. Complex 1 was synthesized via a high-yielding procedure based on the reaction of bis(ethylene) derivative (η5-indenyl)Rh(C2H4)2 with iodine.
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•New indenyl rhodium complexes were synthesized and fully characterized.•Such types of rhodium complexes can be quite effective in catalysis due to their dual nature.•η5 to η3 isomerization allows liberation of an additional coordination site.•Their application in reductive amination shows their high potential in redox reactions, especially in aqueous media.