| Autor: |
Pengfei, Han, Xin, Mao, Yichao, Jin, Sarina, Sarina, Jianfeng, Jia, Eric Rolfe, Waclawik, Aijun, Du, Steven, Bottle, Jin-Cai, Zhao, Huai Yong, Zhu |
| Rok vydání: |
2022 |
| Zdroj: |
Angewandte Chemie (International ed. in English). |
| ISSN: |
1521-3773 |
| Popis: |
Selective activation of the C(sp3)-H bond is an important process in organic synthesis, where efficiently activating a specific C(sp3)-H bond without causing side reactions remains one of chemistry's great challenges. Here we report that illuminated plasmonic silver metal nanoparticles (NPs) can abstract hydrogen from the C(sp3)-H bond of the Cα atom of an alkyl aryl ether β-O-4 linkage. The intense electromagnetic near-field generated at the illuminated plasmonic NPs promotes chemisorption of the β-O-4 compound and the transfer of photo-generated hot electrons from the NPs to the adsorbed molecules leads to hydrogen abstraction and direct cleavage of the unreactive ether Cβ-O bond under moderate reaction conditions (~90°C). The plasmon-driven process has certain exceptional features: enabling hydrogen abstraction from a specific C(sp3)-H bond, along with precise scission of the targeted C-O bond to form aromatic compounds containing unsaturated, substituted groups in excellent yields. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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