Anhydrous Ce(SO4)2 in chloroform selectively converts oximes into the parent carbonyl compounds in good yields. Hammett correlations helped to indicate a plausible mechanism for the above reaction. The formation of 1-(dinitromethyl)benzene was assumed to be a product of isonitroso hydrogen reaction with arylaldoximes.
Anil-Synthese 22. Mitteilung über die Herstellung von Styryl-und Distyryl-Derivaten des Pyridins
作者:Adolf Emil Siegrist、Hans Rudolf Meyer、Peter Gassmann、Serge Moss
DOI:10.1002/hlca.19800630524
日期:1980.7.9
Preparation of Styryl and Distyryl Derivatives of Pyridine
吡啶的苯乙烯基和二苯乙烯基衍生物的制备
Thermal transformation of arylamidoximes in the presence of phosphorus ylides. Unexpected formation of 3-aryl-5-arylamino-1,2,4-oxadiazoles
作者:Demetrios N. Nicolaides、Konstantinos E. Litinas、Ioannis Vrasidas、Konstantina C. Fylaktakidou
DOI:10.1002/jhet.5570410404
日期:2004.7
reacted thermally with ethoxycarbonylmethylene(triphenyl)phosphorane. Furoxans, nitriles, ureas were also isolated suggesting aryl cyanide oxides as intermediates. 3-Aryl-5-arylamino-1,2,4-oxadiazoles were formed via an aryl migration from the carbon atom to the nitrogen atom of the amidoxime, and the structure was further proved from the X-ray crystalstructure of the N-(4-bromobenzoyl) derivative.
Improved Microwave-Mediated Synthesis of 3-(3-Aryl-1,2,4-oxadiazol-5-yl)propionic Acids and Their Larvicidal and Fungal Growth Inhibitory Properties
作者:Ricardo Antonio Wanderley Neves Filho、Cecília Aguiar da Silva、Clécia Sipriano Borges da Silva、Vanessa Passos Brustein、Daniela Maria do Amaral Ferraz Navarro、Fábio André Brayner dos Santos、Luiz Carlos Alves、Marília Gabriela dos Santos Cavalcanti、Rajendra Mohan Srivastava、Maria das Graças Carneiro-Da-Cunha
DOI:10.1248/cpb.57.819
日期:——
The synthesis of 3-(3-aryl-1,2,4-oxadiazol-5-yl)propionicacids from arylamidoximes and succinic anhydride under focused microwave irradiation conditions is described. The new synthetic method furnished the desired products in 2-3 min and good yields. Furthermore, the previously complicated purification procedure has been simplified in a manner which is quick, eco-friendly and cost-effective. Larvicidal
Disubstituted 1,2,4-oxadiazoles have been synthesized in good yields and good purity in one pot procedure by reaction of aromatic nitriles, hydroxylamine hydrochloride and sodium carbonate in ethylene glycol under heating at 195°C. The structures of different 1,2,4-oxadiazoles obtained were confirmed by 1H, 13C NMR and mass spectroscopy.
通过在195℃加热下使芳族腈,盐酸羟胺和碳酸钠在乙二醇中反应,在一个锅法中以高收率和高纯度合成了二取代的1,2,4-恶二唑。通过1 H,13 C NMR和质谱确认所获得的不同的1,2,4-恶二唑的结构。