Iridium Tetra(4‐carboxyphenyl) Porphyrin, Calixpyrrole and Tetraphenyl Porphyrin Complexes as Potential Hydrogenation Catalysts

Here we report the preparation of first examples of iridium‐based organometallic macromolecules, viz., iridium‐tetra (4‐carboxyphenyl)porphyrin (IrTCPP), iridium‐calix[4]pyrrole (IrCP) iridium‐tetraphenylporphyrin (IrTPP), which are effective catalysts for hydrogenation of levulinic acid (LA) to γ‐v...

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Bibliographic Details
Published in:European journal of inorganic chemistry 2019-10, Vol.2019 (38), p.4087-4094
Main Authors: Kaiprathu Anjali, Manammuzhangiyil Sivadasan Aswini, Peringayi Aswin, Venkatachalam Ganesh, Sakthivel, Ayyamperumal
Format: Article
Language:English
Subjects:
Catalysts
Hydrogenation
Inorganic chemistry
Iridium
Levulinic acid
Macromolecules
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Summary:Here we report the preparation of first examples of iridium‐based organometallic macromolecules, viz., iridium‐tetra (4‐carboxyphenyl)porphyrin (IrTCPP), iridium‐calix[4]pyrrole (IrCP) iridium‐tetraphenylporphyrin (IrTPP), which are effective catalysts for hydrogenation of levulinic acid (LA) to γ‐valerolactone (GVL) and 1,4‐pentanediol under base free conditions. The turnover number in the range of 1220–2850 is evident for the chosen reaction using iridium macromolecule based catalysts. The heterogenization of homogeneous IrTCPP, IrCP, and IrTPP result in stable reactivity of the catalysts for several runs.
ISSN:1434-1948
1099-0682
DOI:10.1002/ejic.201900762