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O-Acyl and O-arylsulfonyl derivatives of isatin 3-oximes have been synthesized and their interaction with alcohols and amines has been investigated. It was established that none of the esters of 1-substituted isatin 3-oximes reacted with the indicated nucleophiles. 1-Unsubstituted O-aryl and...
New derivatives of 2-oxo-1-azetidinylacetamide have been synthesized by the four-component condensation of β-amino acids with aldehydes and isonitriles. Study of their cytotoxic activity in vitro revealed a cytotoxic effect of individual compounds in relation to cancer cells of human...
Starting from the products of formylation and vinylformylation of indeno(2,1-b)chromene a series of new symmetrical and unsymmetrical polymethine dyes have been synthesized with a residue of indeno(2,1-b)chromene as the terminal group. It was shown that the unsymmetrical dyes obtained have two...
Treatment of 4-arylamino-4-thioxo-2-butanones with methylhydrazine in acetic acid gives 5-arylamino-1,3-dimethylpyrazoles which are readily halogenated in the 4 position. The thermal decomposition of 3-anilino-1,2,5-trimethyl-1H-pyrazolium chloride gives 1,3-dimethyl-5-phenylaminopyrazole and...
This review of achievements in the area of the chemistry of heterocyclic compounds at the Department of Organic Chemistry of M. V. Lomonosov Moscow State University is dedicated to the 250th anniversary of the University and the 75th anniversary of the Chemical Faculty. It contains a brief...
The reaction of 6,7-dichloro-1,3-dimethyllumazine with terminal alkynes under Sonogashira conditions gave 7-alkynyl-6-chloro- and 6,7-dialkynyl-1,3-dimethyllumazines. It was found that the alkynyllumazines readily add primary and secondary alkylamines at the 7-alkynyl group to form stable...
The polar (4+2) cycloaddition reaction of 1,2-bis(2,5-dimethyl-3-thienyl)acetylene with thiobenzamide and certain aldehydes of the thiophene and furan series catalyzed by boron trifluoride etherate gives the corresponding 4-hetaryl-5,6-di(2,5-dimethyl-3-thienyl)-2-phenyl-4H-1,3-thiazines. The...
A previously unknown recyclization of an 11-acyldipyrido(1,2-a:1′,2′-c)imidazolium cation to 8-formyl-9-methyl(aryl)pyrido(1,2-a)benzimidazoles has been discovered. The proposed reaction mechanism includes a selective opening of one of the pyridinium rings and the formation of a benzaldehyde...
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