Synthesis, characterization and application of magnetic biochar sulfonic acid as a highly efficient recyclable catalyst for preparation of spiro-pyrazolo[3,4-b]pyridines
Lina Dong, Shuai‐Zheng Zhang, Wan‐Lu Zhang, Yao Dong, Li‐Ping Mo, Zhan‐Hui Zhang
Topics & Concepts
CatalysisIsatinSulfonic acidBiocharScanning electron microscopePyridineNuclear chemistryFourier transform infrared spectroscopyInfrared spectroscopyChemistryAmine gas treatingMaterials scienceOrganic chemistryChemical engineeringPyrolysisComposite materialEngineeringMulticomponent Synthesis of HeterocyclesMicrowave-Assisted Synthesis and ApplicationsSynthesis and biological activity