An article Hafnium-Doped Mesoporous Silica as Efficient Lewis Acidic Catalyst for Friedel-Crafts Alkylation Reactions WOS:000483604500094 published article about BENZYLATION; AROMATICS; DIPHENYLMETHANE; ALCOHOLS; BENZENE; ARENES in [Huang, Yao-Bing; Wang, Fei] Nanjing Forestry Univ, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Nanjing 210037, Jiangsu, Peoples R China; [Huang, Yao-Bing; Luo, Yu-Jia] Nanjing Forestry Univ, Coll Chem Engn, Nanjing 210037, Jiangsu, Peoples R China; [Huang, Yao-Bing] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94706 USA in 2019, Cited 23. Computed Properties of C14H14O. The Name is Benzyl ether. Through research, I have a further understanding and discovery of 103-50-4
The development of an efficient solid catalyst for Friedel-Crafts (FC) reactions is of great importance to organic synthetic chemistry. Herein, we reported the hafnium-doped mesoporous silica catalyst Hf/SBA-15 and its first use for Friedel-Crafts alkylation reactions. Catalysts with different Si/Hf ratios were prepared and characterized, among which Hf/SBA-15(20) (Si/Hf = 20:1) was the most active catalyst, offering up to 99.1% benzylated product under mild reaction conditions. The influences of reaction conditions on the product were systematically investigated and compared. Pyridine-IR characterization of the catalyst showed that Lewis acid formed the primary active sites for the Friedel-Crafts alkylation reaction. X-ray photoelectron spectroscopy (XPS) characterization revealed that the electron shift from the Hf center to the silica framework resulted in a more active Lewis metal center for FC reactions. Moreover, the catalyst was successfully applied to the alkylation reaction with different alcohols and aromatic compounds. Finally, the Hf/SBA-15(20) catalyst also showed good recyclability in the recycling runs, demonstrating its high potential of being used for large scale FC reactions in the industry.
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Reference:
Ether – Wikipedia,
,Ether | (C2H5)2O – PubChem