Direct Heterogenization of the Ru-Macho Catalyst for the Chemoselective Hydrogenation of α,β-Unsaturated Carbonyl Compounds

Sudakar Padmanaban; Gunniya Hariyanandam Gunasekar; Sungho Yoon

doi:10.1021/acs.inorgchem.0c03681

Direct Heterogenization of the Ru-Macho Catalyst for the Chemoselective Hydrogenation of α,β-Unsaturated Carbonyl Compounds

Inorg Chem. 2021 May 17;60(10):6881-6888. doi: 10.1021/acs.inorgchem.0c03681. Epub 2021 Feb 12.

Authors

Sudakar Padmanaban^{1

2}, Gunniya Hariyanandam Gunasekar³, Sungho Yoon¹

Affiliations

¹ Department of Chemistry, Chung-Ang University, Seoul 06974, Republic of Korea.
² Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea.
³ Clean Energy Research Centre, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 136-791, Republic of Korea.

PMID: 33576602
DOI: 10.1021/acs.inorgchem.0c03681

Abstract

In this study, a commercially available homogeneous pincer-type complex, Ru-Macho, was directly heterogenized via the Lewis acid-catalyzed Friedel-Crafts reaction using dichloromethane as the cross-linker to obtain a heterogeneous, pincer-type Ru porous organometallic polymer (Ru-Macho-POMP) with a high surface area. Notably, Ru-Macho-POMP was demonstrated to be an efficient heterogeneous catalyst for the chemoselective hydrogenation of α,β-unsaturated carbonyl compounds to their corresponding allylic alcohols using cinnamaldehyde as a model compound. The Ru-Macho-POMP catalyst showed a high turnover frequency (TOF = 920 h^-1) and a high turnover number (TON = 2750), with high chemoselectivity (99%) and recyclability during the selective hydrogenation of α,β-unsaturated carbonyl compounds.