Chemistry of Heterocyclic Compounds

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5,6-Dihydro-4H-imidazo[4,5,1-i,j]quinoline derivatives
Chemistry of Heterocyclic Compounds - Tập 7 Số 7 - Trang 903-905 - 1971
Poludnenko, V. G., Simonov, A. M., Kogutnitskaya, L. G.
The oxidation of 2-hydroxymethyl and 2-methyl derivatives of 5,6-dihydro-4H-imidazo[4,5,1-i,j] quinoline with active manganese dioxide and selenium dioxide gave 2-formyl derivatives of this heterocycle. Some transformations of these compounds are realized.
Fluorinated tetraketone derivatives of N-substituted carbazoles and their Eu(III) complexes for fluorescence immunoassay
Chemistry of Heterocyclic Compounds - Tập 54 - Trang 528-534 - 2018
Dmitriy E. Pugachov, Tatiana S. Kostryukova, Georgy V. Zatonsky, Sergey Z. Vatsadze, Nikolai V. Vasil’ev
New fluorinated tetraketone derivatives of N-substituted carbazoles were synthesized and tested as ligands for fluorescence immunoassay. The spectral properties of the obtained heterocyclic tetraketones and their Eu(III) complexes were studied. The complexes showed longwave absorption at 360–380 nm, high extinction coefficient values, long lifetime of excited states, and intense luminescence, allo...... hiện toàn bộ
The stereochemistry of the protonated forms of heterocyclic bases
Chemistry of Heterocyclic Compounds - Tập 14 - Trang 869-875 - 1978
S. G. Rozenberg, V. A. Zagorevskii, L. M. Sharkova, N. F. Kucherova
The configurational and conformational ratios of protonated 2,4-dimethyl- and 1,2,4-trimethyl-1,2,3,4-tetrahydrobenzofuro[3,2-c]pyridines and their conjugate bases were studied by PMR spectroscopy. The trimethyl derivatives have a 1,4-trans configuration. The equilibrium concentrations of the epimeric salts in solution were determined. In the crystalline state the salts exist in the form of the en...... hiện toàn bộ
Heterocyclic bioantioxidants 1. Reaction of 3-nitro-4-chlorocoumarin with thiolating agents
Chemistry of Heterocyclic Compounds - Tập 27 - Trang 825-830 - 1991
É. A. Parfenov, L. D. Smirnov
The reaction of 3-nitro-4-chlorocoumarin with thiolating agents in the presence of water leads to the formation of a mixture of 3-nitro-4-hydroxycoumarin, bis(3-nitro-4-coumarinyl) sulfide, and colored labile products of undetermined structure. The reaction path can be controlled by the choice of solvent, reagent ratio, and temperature regime and by the use of weakly basic additives.
Efficient method for the microwave synthesis of 4-styrylquinolines
Chemistry of Heterocyclic Compounds - Tập 45 - Trang 1279-1280 - 2010
V. M. Lee, T. N. Gavrishova, M. F. Budyka
Structural course of the scission of 2, 4-dimethyl-l, 3-dioxalane by acetyl chloride
Chemistry of Heterocyclic Compounds - Tập 2 - Trang 343-344 - 1967
A. S. Atavin, B. A. Trofimov, G. I. Kagan, S. E. Orlova, V. V. Keiko
The reaction of 2, 4-dimethyl-1, 3-dioxolane with acetyl chloride in the presence of ZnCl2 catalyst gives only one of two expected chloropropylacetates (the 2-chloropropylacetate), along with propylene glycol diacetate, and resinous products, formed by splitting of the intermediate α-chloroesters, as well as by polymerization of the starting dioxolane. IR spectra confirmed the structure of the 2-c...... hiện toàn bộ
Synthesis and antitumor activity of 3-[(methyl)bis(5-trialkylsilyl-furan-2-yl)silyl]propylamines
Chemistry of Heterocyclic Compounds - Tập 47 - Trang 1502-1508 - 2012
L. Ignatovich, V. Romanov, J. Spura, J. Popelis, I. Domracheva, I. Shestakova
Novel 3-[(methyl)bis(5-trialkylsilylfuran-2-yl)silyl]propylamines have been synthesized by a hydrosilylation reaction of aliphatic and heterocyclic N-allylamines in the presence of the Speier's catalyst. The effects of the structure of the amine and the alkyl substituent at the silicon atom on the cytotoxicity of the compounds have been studied.
Kinetic confirmation of the presence of isomers of the colored form of 2H-benzopyran-2-spiro-2′-indolines
Chemistry of Heterocyclic Compounds - Tập 5 - Trang 564-564 - 1969
M. A. Gal'bershtam, N. A. Donskaya
1,3,4-Oxadiazolo[3,2-α]pyrimidinium salts
Chemistry of Heterocyclic Compounds - Tập 11 - Trang 1272-1277 - 1975
I. P. Bachkovskii, V. A. Chuiguk
5-Amino-1,3,4-oxadiazolium perchlorates react with 1,3-carbonyl-functional compounds to give 1,3,4-oxadiazolo[3,2-α]pyrimidinium perchlorates. The latter are cleaved by both alkali and strong acid to give 1-amino-2-pyrimidinone or 5-amino-1,3,4-oxadiazole derivatives. The l,3,4-oxadiazolo[3,2-α]pyrimidinium perchlorates react with anailine and hydrazines to give sym-triazolo[1,5-α]pyrimidinium sal...... hiện toàn bộ
Reaction of o-aminophenyldiphenylmethanol with α-acetylenic ketone
Chemistry of Heterocyclic Compounds - Tập 29 - Trang 1232-1233 - 1993
T. P. Kosulina, E. V. Gromachevskaya, V. G. Kul'nevich
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