Cross-aldol reaction of 3-acetyl-2H-chromen-2-one by using Amberlyst 26A as catalyst
摘要:
Synthesis of a series of 3-acetylcoumarin-derived chalcones (1a-16a) was catalyzed with Amberlyst 26A in ethanol. Using reusable Amberlyst 26A and biobased solvent ethanol make this method highly ecofriendly and simple. Amberlyst 26A was found to be a highly effective catalyst for cross aldol reaction. The results shown that the method is operationally simple to implement with a wide scope of substrates.[GRAPHICS].
Cross-aldol reaction of 3-acetyl-2H-chromen-2-one by using Amberlyst 26A as catalyst
作者:Mehmet Erşatır、Dilek Akbaşlar、Onur Demirkol、E. Sultan Giray
DOI:10.1080/00397911.2016.1252047
日期:2017.1.2
Synthesis of a series of 3-acetylcoumarin-derived chalcones (1a-16a) was catalyzed with Amberlyst 26A in ethanol. Using reusable Amberlyst 26A and biobased solvent ethanol make this method highly ecofriendly and simple. Amberlyst 26A was found to be a highly effective catalyst for cross aldol reaction. The results shown that the method is operationally simple to implement with a wide scope of substrates.[GRAPHICS].
On the Mechanism of Photodehydrogenation of Aryl(hetaryl)pyrazolines in the Presence of Perchloroalkanes
作者:Valery F. Traven、Dmitriy A. Cheptsov、Maria V. Bulanova、Natalya P. Solovjova、Tatyana A. Chibisova、Sergei M. Dolotov、Ivan V. Ivanov
DOI:10.1111/php.12918
日期:2018.7
photodehydrogenation reactions vary in a significant range according to the structure of pyrazoline. The data correlate with ionization potentials of pyrazolines available from DFT quantum chemical calculations. These results are discussed in terms of proposed scheme of mechanism of pyrazolines photodehydrogenation assuming formation of ion‐radical and ion intermediates.