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A convenient synthesis is given of a key sulfide precursor of the alkaloids diptocarpidine and diptocarpiline from hept-6-enoic acid.Institute of Chemistry of the Bashkir Branch of the USSR Academy of Sciences, Ufa. Institute of Chemistry of Plant Substances of the Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 742–744, September–October, 1987. 相似文献
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N-Sulfinyltrifluoromethanesulfonamide CF3SO2N=S=O reacts with salicylaldehyde, 2-furaldehyde, 2-thiophenecarbaldehyde, 3-methyl-1-phenyl-1H-pyrazole-4-carbaldehyde, and 2-phenyl-2H-1,2,3-triazole-4-carbaldehyde to afford the corresponding N-aryl(hetaryl)methylidenetrifluoromethanesulfonamides in high yields. Reactions of the latter with aniline give no adducts at the C=N bond but transamination products. The reaction of trifluoromethanesulfonamide with phenyl isocyanate led to formation of N,N′-diphenylurea instead of expected N-phenyl-N′-(trifluoromethylsulfonyl)urea.__________Translated from Zhurnal Organicheskoi Khimii, Vol. 41, No. 7, 2005, pp. 1006–1010.Original Russian Text Copyright © 2005 by Shainyan, Tolstikova. 相似文献
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Gromova M. A. Kharitonov Yu. V. Borisov S. A. Rybalova T. V. Tolstikova T. G. Shults E. E. 《Chemistry of Natural Compounds》2022,58(1):55-64
Chemistry of Natural Compounds - Synthetic methods were developed for isopimaric acid derivatives, the terminal carboxylic acid of which was separated by two or three methylenes from the tricyclic... 相似文献
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Il’ina I. V. Korchagina D. V. Morozova E. A. Tolstikova T. G. Volcho K. P. Salakhutdinov N. F. 《Russian Chemical Bulletin》2019,68(5):1061-1066
Russian Chemical Bulletin - A series of compounds with a hydrogenated 2H-chromene skeleton was synthesized by the reaction of ketones and available para-menthane monoterpenoid (—)-isopulegol.... 相似文献
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Results of pharmacological and physico-chemical studies of supramolecular drug delivery systems on the basis of plant metabolites, viz. polysaccharides and glycyrrhizinic acid are summarized. The prospects of developing of safe and efficient medicines are outlined. 相似文献
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L. L. Tolstikova I. V. Sterkhova B. A. Shainyan 《Russian Journal of Organic Chemistry》2014,50(9):1247-1251
Urea and thiourea form complexes with trifluoromethanesulfonic acid, its monohydrate, and lithium salt CF3SO3Li. Urea complexes with trifluoromethanesulfonic acid are also formed as a result of hydrolysis in the reaction of N,N′-bis(trimethylsilyl)carbodiimide or cyanamide with trifluoromethanesulfonic acid in water. 相似文献
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L. L. Tolstikova A. V. Bel’skikh B. A. Shainyan 《Russian Journal of General Chemistry》2010,80(6):1189-1192
The reaction of N-sulfinyltrifluoromethanesulfonamide with triphenylphosphine and triphenylphosphine oxide or of trifluoromethanesulfonamide
with dichloro(triphenyl)phosphorane leads to trifluoro-N-(triphenyl-λ5-phosphanylidene)methanesulfonamide, which is hydrolyzed to trifluoromethanesulfonamide and triphenylphosphine oxide via the
intermediate trifluoro-N-[hydroxy(triphenyl)phosphoranyl]methanesulfonamide. 相似文献
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