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Obydennov Dmitrii L. Simbirtseva Alena E. Sosnovskikh Vyacheslav Y. 《Research on Chemical Intermediates》2022,48(5):2155-2179
Research on Chemical Intermediates - Synthesis of 2-cyano-6-styryl-4-pyrones has been developed on the basis of 6-metylcomanic acid via modifications of the methyl and carboxyl groups. Reactions of... 相似文献
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1,4-Nucleophilic addition reactions of 3-nitrothiochromone with indoles gave a number of novel trans-2-(indol-3-yl)-3-nitrothiochroman-4-ones in 36–89% yields. During the reactions, the thiopyrone ring underwent no opening. 相似文献
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A reaction of 3-cyanochromones with ethylenediamine in ethanol afforded N,N′-ethyl-ene-bis(2-amino-3-iminomethylchromones), which depending on the time of reflux in acetic acid give 2-amino-3-formylchromones
or products of their dimerization, 2-(chromon-3-yl)-5H-chromeno[2,3-d]pyrimidin-5-ones. 相似文献
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Boris I. Usachev Sergey A. UsachevGerd-Volker Röschenthaler Vyacheslav Ya. Sosnovskikh 《Tetrahedron letters》2011,52(50):6723-6725
4-Aryl-6-(trifluoromethyl)-2H-pyran-2-ones and ethyl 4-aryl-6-(trifluoromethyl)-2-oxo-2H-pyran-3-carboxylates react with sodium azide to produce highly functionalized CF3-1,2,3-triazoles: 3-[5-(trifluoromethyl)-1,2,3-triazol-4-yl]cinnamic acids and monoethyl esters of [5-(trifluoromethyl)-1,2,3-triazol-4-yl]arylmethylidene malonic acids. 相似文献