铜 (I) 改性沸石,尤其是 Cu I -USY,被证明是环氧化物与叠氮化钠和末端炔烃的多组分反应中非常有效的催化剂。这种催化剂允许羟甲基化三唑的高度区域和立体选择性合成。这些异质改性沸石可以很容易地回收和再利用。此外,级联反应最好在室温下在水中进行,使所有过程真正绿色。详细研究揭示了 Cu I 改性沸石在环氧化物开环和环加成步骤中所起的作用。
Copper Supported on the SiO2 Nanoparticle in Click Chemistry: An Alternative Catalytic System for Regioselective and One-Pot Synthesis of 1,2,3-Triazoles and β-Hydroxytriazoles
In this work, readily prepared coppersupported on the SiO2nanoparticles has been found to effectively catalyze the 1,3‐dipolar cycloaddition of a variety of azides, alkynes, epoxides and sodium azide, furnishing the corresponding 1,2,3‐triazoles and β‐hydroxytriazoles. Click reaction proceeds in short reaction times and under mild reaction conditions, and the resulting products are obtained in good
Zeo-Click Chemistry: Copper(I)-Zeolite-Catalyzed Cascade Reaction; One-Pot Epoxide Ring-Opening and Cycloaddition
作者:Thirupathi Boningari、Andrea Olmos、Benjaram M. Reddy、Jean Sommer、Patrick Pale
DOI:10.1002/ejoc.201000802
日期:2010.11
Copper(I)-modified zeolites, especially Cu I -USY, proved to be very efficient catalysts in multi-component reactions of epoxides with sodium azide and terminal alkynes. Such catalysts allow highly regio- and stereoselective syntheses of hydroxymethylated triazoles. These heterogeneous, modified zeolites can easily be recovered and reused. Moreover, the cascade reaction was best performed in water
铜 (I) 改性沸石,尤其是 Cu I -USY,被证明是环氧化物与叠氮化钠和末端炔烃的多组分反应中非常有效的催化剂。这种催化剂允许羟甲基化三唑的高度区域和立体选择性合成。这些异质改性沸石可以很容易地回收和再利用。此外,级联反应最好在室温下在水中进行,使所有过程真正绿色。详细研究揭示了 Cu I 改性沸石在环氧化物开环和环加成步骤中所起的作用。