Dong, Li-Na; Zhang, Shuai-Zheng; Zhang, Wan-Lu; Dong, Yao; Mo, Li-Ping; Zhang, Zhan-Hui published the artcile< Synthesis, characterization and application of magnetic biochar sulfonic acid as a highly efficient recyclable catalyst for preparation of spiro-pyrazolo[3,4-b]pyridines>, Formula: C9H6ClNO, the main research area is cobalt iron oxide biochar sulfonic acid magnetization adsorption stability.
A magnetic biochar sulfonic acid was prepared and characterized by fourier IR spectroscopy (FT-IR), powder x-ray diffraction technol., scanning electron microscope, transmission electron microscope and vibrating sample magnetometer techniques. The prepared catalyst exhibited excellent catalytic activity for synthesis of spiro-pyrazolo[3,4-b]pyridine derivatives via one-pot three-component reaction of 1H-pyrazol-5-amine, isatin and 3-oxo-3-phenylpropanenitrile. The catalyst could be readily recovered and reused several times without an obvious decay of catalytic performance.
Research on Chemical Intermediates published new progress about Adsorption. 21667-62-9 belongs to class nitriles-buliding-blocks, and the molecular formula is C9H6ClNO, Formula: C9H6ClNO.
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts