Silica-bonded 1,4-diaza-bicyclo[2.2.2]octane-sulfonic acid chloride catalyzed synthesis of spiropyran derivatives
作者:Ahmad Reza Moosavi-Zare、Mohammad Ali Zolfigol、Ehsan Noroozizadeh、Rasoul Salehi-Moratab、Mahmoud Zarei
DOI:10.1016/j.molcata.2016.04.021
日期:2016.8
Abstract In this research, a novel nanostructured heterogeneous catalyst, namely silica-bonded 1,4-diaza-bicyclo[2.2.2]octane-sulfonic acid chloride (SBDBSAC), as an acidic ionic liquid based on 1,4-diaza-bicyclo[2.2.2]octane ring bonded to silica has been prepared and fully characterized by several techniques such as fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetric
Alum (KAl(SO4)2·12H2O) Catalyzed Multicomponent Transformation: Simple, Efficient, and Green Route to Synthesis of Functionalized Spiro[chromeno[2,3-d]pyrimidine-5,3′-indoline]-tetraones in Ionic Liquid Media
作者:Mojtaba Mirhosseini Moghaddam、Ayoob Bazgir、Akhondi Mohammad Mehdi、Ramin Ghahremanzadeh
DOI:10.1002/cjoc.201280014
日期:2012.3
The combination of isatin, barbituric acid, and cyclohexane‐1,3‐dione derivatives in the presence of alum (KAl(SO4)2·12H2O) as a catalyst for 15 min was found to be a suitable and efficient method for the synthesis of spiro[chromeno[2,3‐d]pyrimidine‐5,3′‐indoline]‐tetraones.
发现在明矾(KAl(SO 4)2 ·12H 2 O)作为催化剂存在下15分钟将Isatin,巴比妥酸和环己烷-1,3-二酮衍生物组合使用是一种合适且有效的方法螺[ chromeno [2,3 - d ]嘧啶-5,3'-二氢吲哚]-四酮的合成。