Formula: C7H5NO3. Mousapour, M; Shirini, F in [Mousapour, Maryam; Shirini, Farhad] Univ Guilan, Dept Chem, Coll Sci, Rasht 4133519141, Iran published Piperazinium Nano Silica Sulfonate: An Efficient Catalyst for the Hantzsch Reaction in 2021.0, Cited 67.0. The Name is 3-Nitrobenzaldehyde. Through research, I have a further understanding and discovery of 99-61-6.
Piperazinium nano silica sulfonate (PNSS) is simply prepared by the reaction of piperazine with nano sized silica sulfuric acid. After preparation it was completely characterized using different techniques including FT-IR, XRD, TGA, FESEM, EDS and TEM analysis. In continue PNSS was efficiently used for the promotion of the synthesis of polyhydroquinolines and 1,8-dioxo-decahydroacridines through unsymmetrical and symmetrical Hantzsch condensation reaction. High yields, short reaction times, ease of preparation and reusability of the catalyst, easy work-up procedure and solvent-free conditions are among the most important advantages of this method.
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Reference:
Thiomorpholine – Wikipedia,
,Thiomorpholine | C4H9NS – PubChem