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Hydrogenolysis of Diaryl Ether C–O Bonds Using a Nickel/Carbon Catalyst
| Content Provider | Semantic Scholar |
|---|---|
| Author | Uozumi, Yasuhiro Yamada, Yoichi M. A. Ishii, Rikako |
| Copyright Year | 2016 |
| Abstract | Significance: The hydrogenolysis of compounds that mimic the diaryl ether moieties in lignin was catalyzed by nickel nanoparticles on carbon (Ni/C) in the presence of sodium tert-butoxide or potassium hexamethyldisilazide under hydrogen to give the corresponding arenes in >98% yield and high selectivity. The hydrogenolysis of ether 1 with Ni/C took place without significant aggregation of nickel particles [2–5 nm (1 h); 5–7 nm (24 h)]. Comment: [Ni(cod)2] (10 mol%) catalyzed the hydrogenolysis of ether 1 at 180 °C for 24 hours with 20% conversion; during this period, the nickel particles aggregated from a size of 4–13 nm (1 h) to 17–23 nm (24 h), as observed by TEM. The authors previously reported that hydrogenolysis of 1 occurred in 45% conversion yield with a ligandfree nickel catalyst at 120 °C for 48 h (Science 2011, 332, 439). O |
| Starting Page | 421 |
| Ending Page | 421 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1055/s-0035-1561798 |
| Alternate Webpage(s) | https://www.thieme-connect.com/products/ejournals/pdf/10.1055/s-0035-1561798.pdf |
| Alternate Webpage(s) | https://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0035-1561798.pdf |
| Alternate Webpage(s) | https://thieme-connect.com/products/ejournals/pdf/10.1055/s-0035-1561798.pdf |
| Alternate Webpage(s) | https://doi.org/10.1055/s-0035-1561798 |
| Volume Number | 12 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
