Click approach to the novel 1,2,3-triazolium phosphotungstate organic–inorganic hybrids for the highly promoted synthesis of spirooxindoles
作者:Layla A. Taib、Mosadegh Keshavarz、Abolfath Parhami
DOI:10.1007/s11164-021-04632-2
日期:2022.2
SO3H-functionalized ionic hybrid catalysts have a cationic organic triazolium with phosphotungstate anion and are water-soluble with appropriate thermal stability. Their catalytic activity was explored for the synthesis of spirooxindoles via the three‐component reaction of 1,3‐dicarbonyl compounds, barbituric acid, and isatin derivatives. The synthesis of desired spirooxindole products was performed in acceptable
A simple and clean method for multicomponent synthesis of spiro [indole-tetrahydropyrano(2,3-d)pyrimidine] derivatives using SBA-Pr-SO3H as catalyst under solvent-free conditions
functionalized SBA-15 (SBA-Pr-SO3H) as a new nanoporous solid acid catalyst was applied in the green one-pot synthesis of spiro[indole-tetrahydropyrano(2,3-d)pyrimidine] derivatives via three-component reaction of isatins, malononitrile or cyanoacetic esters and barbituric acids under solvent-freeconditions. SBA-Pr-SO3H was proved to be an efficient heterogeneous nanoporous solid acid catalyst with a pore
Oxalic acid dihydrate: proline as a new recyclable designer solvent: a sustainable, green avenue for the synthesis of spirooxindole
作者:Dattatray R. Chandam、Abhijeet G. Mulik、Dayanand R. Patil、Madhukar B. Deshmukh
DOI:10.1007/s11164-015-2093-3
日期:2016.2
encouraged to explore oxalic acid dihydrate: proline low transition temperature mixture as a new designer solvent for the said synthesis at room temperature. It has been successfully applied for the three componentreaction of isatin, malononitrile or ethyl cyanoacetate and 1,3–dicarbonyl compounds for the first time. Moderate to good yield of the products, shorter reaction time, energy efficiency, chromatography-free
Synthetic, mechanistic and kinetic studies on the organo-nanocatalyzed synthesis of oxygen and nitrogen containing spiro compounds under ultrasonic conditions
Vitamin B1 functionalised nano-ferrites: an organo-nanocatalyst for the synthesis of various spiro derivatives.
维生素B 1官能化的纳米铁氧体:用于合成各种螺衍生物的有机纳米催化剂。
Convenient synthesis of spirooxindoles using SnO2 nanoparticles as effective reusable catalyst at room temperature and study of their in vitro antimicrobial activity
作者:Leila Moradi、Zeynab Ataei、Zohreh Zahraei
DOI:10.1007/s13738-019-01598-2
日期:2019.6
highly efficient method for safe, green and facile synthesis of spirooxindole derivatives have been presented. SnO2 nanoparticles (SnO2 NPs) as effective catalyst were synthesized through chemical precipitation method and characterized in details using FTIR, XRD, SEM and EDS methods. Obtained nano tin oxide particles were used as heterogeneous catalyst for the one-pot synthesis of spirooxindoles at room