The synthesis of metal-organic framework Al-MIL-53-derived Brønsted acid catalyst and its application in the Mannich reaction

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• 作者：Zongcheng Miao ; Chao Qi ; Liangshi Wang ; Allison M. Wensley and Yi Luan
• 刊名：Applied Organometallic Chemistry
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：31
• 期：2
• 全文大小：1121K
• ISSN：1099-0739

文摘

A metal–organic framework Al-MIL-53-NHb>2b>-derived Brønsted acid catalyst (Al-MIL-53-RSOb>3b>H) has been synthesized employing a post-synthetic modification strategy under mild conditions. The Al-MIL-53-RSOb>3b>H catalyst was successfully utilized in the nitro-Mannich reaction taking advantage of its strong Brønsted acidity. Good to excellent yields of Mannich adducts were achieved for a variety of acylimine substrates in the presence of 0.1 mol% Al-MIL-53-RSOb>3b>H. Furthermore, the Al-MIL-53-RSOb>3b>H catalyst can be recycled five times without decreasing the yield and selectivity of Mannich adducts.