Novel ionic liquid [Et3N-SO3H][MeSO3]: Synthesis, characterization and catalytic performance for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes
作者:M. S. Takallo、A. Zare
DOI:10.4314/bcse.v33i1.7
日期:——
14-aryl-14 H -dibenzo[ a , j ]xanthenes. [Et 3 N-SO 3 H][MeSO 3 ] efficiently catalyzed the reaction, and the products were obtained in high to excellent yields and in short reaction times. KEY WORDS : Protic acidicionicliquid, N , N -Diethyl- N -sulfoethanaminium methanesulfonate ([Et 3 N-SO 3 H][MeSO 3 ]), 2-Naphthol, Arylaldehyde, 14-Aryl-14 H -dibenzo[ a , j ]xanthene Bull. Chem. Soc. Ethiop. 2019
High acidity cellulose sulfuric acid from sulfur trioxide: a highly efficient catalyst for the one step synthesis of xanthene and dihydroquinazolinone derivatives
作者:Xiaofei Yue、Zhiqiang Wu、Gang Wang、Yanping Liang、Yanyan Sun、Manrong Song、Haijuan Zhan、Shuxian Bi、Wanyi Liu
DOI:10.1039/c9ra05748j
日期:——
development and preparation of cellulose sulfonate catalysts provide a good approach for the development and application of cellulose, and also an important application of green organic catalytic synthesis methodology.
SO 3气相磺化成功制备了一种稳定性高、催化活性优异、酸度值高(约1.55 mmol g -1 )的纤维素磺酸盐催化剂(HS-纤维素磺酸盐)。采用HRTEM、XRD、IR、TG等手段对催化剂的基本形貌和纳米结构进行了测定,并将该催化剂应用于二氢喹唑啉酮衍生物与呫吨类化合物的催化反应,获得了非常有价值的结果。纤维素磺酸盐催化剂的开发和制备为纤维素的开发和应用提供了良好的途径,也是绿色有机催化合成方法学的重要应用。
A facile approach for the synthesis of 14-aryl- or alkyl-14H-dibenzo[a,j]xanthenes under solvent-free condition
A facile, efficient and environment-friendly protocol for the synthesis of 14-aryl- or alkyl-14H-dibenzo[a,j]xanthenes has been developed by one-pot condensation of 2-naphthol with aliphatic and aromatic aldehydes in the presence of P2O5 or InCl3 as catalysts undersolvent-free conditions. The present approach offers the advantages of clean reaction, simple methodology, short reaction time, high yield
通过在存在条件下将2-萘酚与脂肪族和芳香族醛进行一锅缩合反应,已开发出一种简便,高效且环境友好的方案,用于合成14-芳基-或烷基-14 H-二苯并[ a,j ]氧杂蒽在无溶剂条件下制备P 2 O 5或InCl 3作为催化剂。本方法具有清洁反应,方法简单,反应时间短,产率高,易于纯化和催化剂经济实用的优点。
Synthesis of 14-aryl-14<i>H</i>-dibenzo[<i>a,j</i>]xanthene Derivatives Catalysed by Expanded Graphite under Solvent-Free Condition
作者:Geng-Chen Li
DOI:10.3184/030823408x340771
日期:2008.8
A convenient eco-friendly procedure has been developed for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenederivatives by one-pot condensation of 2-naphthol and aryl aldehydes catalysed by expanded graphite undersolvent-freeconditions. The present methodology offers several advantages such as excellent yields, shorter reaction times, low cost and reusability of the catalyst.