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Catalytic Performance of Ruthenium‐Supported Ionic‐Liquid Catalysts in Sustainable Synthesis of Macrocyclic Lactones |
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| Authors: | Hisahiro Hagiwara Tomomi Nakamura Naotaro Okunaka Takashi Hoshi Toshio Suzuki |
| Affiliation: | 1. Graduate School of Science and Technology, Niigata University, 8050, 2‐Nocho, Ikarashi, Nishi‐ku, Niigata 950‐2181, Japan (phone/fax: +81‐25‐262‐7368);2. Faculty of Engineering, Niigata University, 8050, 2‐Nocho, Ikarashi, Nishi‐ku, Niigata 950‐2181, Japan |
| Abstract: | Thirteen‐ to eighteen‐membered lactones were synthesized by ring‐closing olefin‐metathesis reactions of bis‐olefins with heterogeneous Grubbs‐supported ionic‐liquid catalysts (SILCs), in which homogeneous Grubbs catalysts were confined in pores of alumina with the aid of an ionic liquid. The Grubbs‐SILCs exhibited higher catalytic performance than their homogeneous counterparts and could be repeatedly recovered by simple filtration and re‐used several times. |
| Keywords: | Catalytic performance Ionic liquids Macrocyclic lactones Catalyst immobilization Grubbs catalyst Olefin metathesis, ring‐closing Exaltolide |