Construction of Indium(III)–Organic Framework Based on a Flexible Cyclotriphosphazene-Derived Hexacarboxylate as a Reusable Green Catalyst for the Synthesis of Bioactive Aza-Heterocycles
作者:Velusamy Jeevananthan、Gopal Chandru Senadi、Kesavan Muthu、Ajithkumar Arumugam、Swaminathan Shanmugan
DOI:10.1021/acs.inorgchem.3c04117
日期:2024.3.25
include broad functional group compatibility, low catalyst loading (1–5 mol %), mild reaction conditions, easy workup procedures, good to excellent reaction yields, ethanol as a green solvent, reusability of the catalyst (five cycles), and economic attractiveness, which is mainly due to sustainability of SRMIST–1 as a reusable green catalyst. Our findings demonstrate that the highly reactive and reusable
对合成复杂有机化合物的环保方法的持续需求激发了研究人员设计和开发现代、高效的多相催化系统。在此,通过反应产生了 In-HPCCP 金属有机骨架(SRMIST-1),这是一种非均相路易斯酸催化剂,含有毒性较低的铟和环保的鲁棒环三磷腈,具有显着的化学和热稳定性、持久的催化活性和出色的可重复使用性硝酸铟(III)水合物和六(4-羧基苯氧基)-环三磷腈之间。在SRMIST-1结构中,二级结构单元InO 7 }通过来自不同HCPCP配体的η 2 -和η 1 -羧氧原子的连接组装而成,形成三维网络。 SRMIST-1 中规则分布的 In(III) 位点赋予催化剂合成 2,3-二氢喹唑啉-4(1 H )-酮和 3,4-二氢-2 H -1,2 的优异反应活性,4-苯并噻二嗪-1,1-二氧化物是由2-氨基苯甲酰胺和2-氨基苯磺酰胺分别与醛在优化反应条件下进行环化反应得到的。该方法的显着特点包括广泛的官能团兼容性、低催化剂负载量(1-5