Heterocyclization Reactions of 3-methylisoxazol-5-amine with Pyruvic Acid Derivatives Using Classical and Non-classical Methods of Activation
作者:Alisa D. Morozova、Elena A. Muravyova、Sergey M. Desenko、Vladimir I. Musatov、Daria V. Yedamenko、Valentin A. Chebanov
DOI:10.1007/s10593-017-1989-9
日期:2016.11
between 3-methylisoxazol-5-amine and pyruvicacidderivatives were studied both by using classical methods of activation, as well as under microwave irradiation and ultrasonication. It was shown that the reactions with esters of arylidene pyruvicacids could lead to the formation of three different types of heterocyclic systems, while in the case of arylidene pyruvicacid a very insignificant conversion
通过使用经典的活化方法,以及在微波辐射和超声处理下,研究了3-甲基异恶唑-5-胺与丙酮酸衍生物之间的双组分和多组分相互作用。结果表明,与亚芳基丙酮酸的酯反应可导致形成三种不同类型的杂环系统,而在亚芳基丙酮酸的情况下,起始化合物向异恶唑[5,4- b ]的转化非常微不足道。由于3-甲基异恶唑-5-胺的低稳定性,观察到吡啶羧酸。
Ag/CdS Nanocomposite: An Efficient Recyclable Catalyst for the Synthesis of Novel 8-Aryl-8H-[1,3]dioxolo[4,5-g]chromene-6-carboxylic Acids under Mild Reaction Conditions
作者:Shahrzad Abdolmohammadi、Seyed Reza Rasouli Nasrabadi、Ahmad Seif、Narges Elmi Fard
DOI:10.2174/1386207321666180604104456
日期:2018.7.20
properties. The effectiveness of catalytic activity of CdS NPs can be improved due to the combined effect of Ag particles. RESULTS Ag/CdS nanocomposite is a readily available, recyclable, and non-toxic catalystused for the highly efficientsynthesis of novel 8-aryl-8H-[1,3]dioxolo[4,5-g]chromrne-6-carboxylic acids. This reaction is conveniently performed under mild reaction conditions. All synthesized compounds
Abstract The synthesis of 5-aryl-4-oxo-3,4,5,8-tetrahydropyrido[2,3-d]pyrimidine-7-carboxylic acids 3 from the reaction of 6-aminopyrimidines 1 with arylidenederivatives of pyruvic acid 2 under microwave and ultrasound irradiation is described. The orientation of cyclization process was determined by NMR measurements. The methodology provides advantages such as high yields and friendly to the environment
Features of 3-amino-5-methylisoxazole in heterocyclizations involving pyruvic acids
作者:Alisa D. Morozova、Elena A. Muravyova、Svitlana V. Shishkina、Dmytro Sysoiev、Toma Glasnov、Vladimir I. Musatov、Sergey M. Desenko、Valentyn A. Chebanov
DOI:10.1007/s10593-019-02422-8
日期:2019.1
The chemical properties of 3-amino-5-methylisoxazole in the reactions involving pyruvic acid derivatives are reported. The multicomponent condensation of 3-amino-5-methylisoxazole, aromatic aldehyde, and pyruvic acid was not effective while the treatment of the starting amine with pyruvic acid derivatives led to suitable synthetic procedures for selective synthesis of furanones and pyrrolones. It was
A domino amino-lactonisation of arylidene pyruvic acids (APAs) by amines in aqueous media
作者:Morteza Shiri、Majid M. Heravi、Bita Soleymanifard、Hendrik G. Kruger、Mohammad Ali Zolfigol
DOI:10.1016/j.tet.2013.02.036
日期:2013.4
The aqueous reaction of arylidene pyruvic acids (APAs) with arylamines or urea under refluxing conditions leading to the formation of 3-(amino)-5-aryl-furan-2(5H)-one, without catalyst, is described. Also (E)-4-(4-chlorophenyl)-2-oxobut-3-enoic acid reacts with 1,2-phenylenediamine to form (E)-3-(4-chlorostyryl)quinoxalin-2(1H)-one under the same conditions. Excellent yields were observed after filtration