Ryzhkov, FV; Ryzhkova, YE; Elinson, MN; Vorobyev, SV; Fakhrutdinov, AN; Vereshchagin, AN; Egorov, MP in [Ryzhkov, Fedor, V; Ryzhkova, Yuliya E.; Elinson, Michail N.; Fakhrutdinov, Artem N.; Vereshchagin, Anatoly N.; Egorov, Mikhail P.] Russian Acad Sci, ND Zelinsky Inst Organ Chem, Leninsky Pr 47, Moscow 119991, Russia; [Vorobyev, Stepan V.] Gubkin Russian State Univ Oil & Gas, Dept Organ Chem & Petr Chem, 65 Leninsky Prospect, Moscow 119991, Russia published Catalyst-Solvent System for PASE Approach to Hydroxyquinolinone-Substituted Chromeno[2,3-b]pyridines Its Quantum Chemical Study and Investigation of Reaction Mechanism in 2020, Cited 63. Recommanded Product: 86-95-3. The Name is 4-Hydroxyquinolin-2(1H)-one. Through research, I have a further understanding and discovery of 86-95-3.
The Pot, Atom, and Step Economy (PASE) approach is based on the Pot economy principle and unites it with the Atom and Step Economy strategies; it ensures high efficiency, simplicity and low waste formation. The PASE approach is widely used in multicomponent chemistry. This approach was adopted for the synthesis of previously unknown hydroxyquinolinone substituted chromeno[2,3-b]pyridines via reaction of salicylaldehydes, malononitrile dimer and hydroxyquinolinone. It was shown that an ethanol-pyridine combination is more beneficial than other inorganic or organic catalysts. Quantum chemical studies showed that chromeno[2,3-b]pyridines has potential for corrosion inhibition. Real time H-1 NMR monitoring was used for the investigation of reaction mechanism and 2-((2H-chromen-3-yl)methylene)malononitrile was defined as a key intermediate in the reaction.
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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles