Full kinetics and a mechanistic investigation of three-component reaction catalyzed by sodium acetate leading to 3,4-dihydropyrano[c]chromene

Autor:	Sayyed Mostafa Habibi-Khorassani, Mehdi Shahraki, Sadegh Talaiefar, Jasem Aboonajmi, Mohammad Amin Kazemian, Malek Taher Maghsoodlou
Rok vydání:	2014
Předmět:	Arrhenius equation Reaction mechanism Chemistry Kinetics General Chemistry Photochemistry Condensation reaction Catalysis Reaction rate symbols.namesake chemistry.chemical_compound Reaction rate constant Computational chemistry symbols Malononitrile
Zdroj:	Research on Chemical Intermediates. 41:5821-5837
ISSN:	1568-5675 0922-6168
Popis:	Sodium acetate was applied as an efficient catalyst for the one-pot, three-component condensation reaction consisting of 4-nitrobenzaldehyde 2, malononitrile 3, and 4-hydroxycoumarin 1. For the first time, the kinetics and mechanism of the reaction has been investigated spectrally. The second-order rate constant dependency on the temperature was in agreement with the Arrhenius and Eyring equations. The kinetic and thermodynamic parameters of the reaction were calculated. Furthermore, useful information was obtained from studies of the solvent and concentration effects on the reaction rate. The results showed that the second step of the reaction mechanism is a rate-determining step. The proposed mechanism was also confirmed according to the obtained results and the steady-state approximation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b4ac816a91eaf966361570953ee67a0c https://doi.org/10.1007/s11164-014-1704-8 Zobrazit plný text záznamu Full text from SpringerLink