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1.
V. V. Dovlatyan É. N. Ambartsumyan G. S. Amazaspyan 《Chemistry of Heterocyclic Compounds》1996,32(1):75-77
New approaches have been developed for the application of cyanamino-sym-triazines in the synthesis of imidazolidinyl-sym-triazines. 相似文献
2.
V. B. Dovlatyan V. A. Pivazyan K. A. Éliazyan R. G. Mirzoyan S. M. Saakyan 《Chemistry of Heterocyclic Compounds》1981,17(8):838-841
Two 2-dialkylamino-4-(2-chloroethoxy)-6-methoxyamino-sym-triazines were synthesized. It was established that when they are heated at 120° C, the 2-chloroethoxy group undergoes rearrangement with cyclization to give 2-dialkylamino-4-oxo-8-methoxy-6, 7-dihydroimidazo [1,2-a]-sym-triazines, the structure of which was confirmed by data from the IR, PMR, and mass spectra.See [6] for Communication 6.Translated from Khimiya Geterotsilicheskikh Soedinenii, No. 8, pp. 1122–1124, August, 1981. 相似文献
3.
V. V. Dovlatyan K. A. Eliazyan V. A. Pivazyan A. P. Engoyan 《Chemistry of Heterocyclic Compounds》2003,39(9):1238-1241
We have carried out solvolysis of the previously described ethyl esters of 3-methyl(aryl)-4-methyl-2-thioxothiazoline-5-carboxylic acids, leading to the corresponding acids without breaking down the heterocycle. We synthesized a series of novel esters from the latter by treatment with dimethyl sulfate or reactive halides. Of these, only in the case of the ethyl ester of 3,4-dimethyl-2-thioxothiazoline-5-carboxylic acid did we obtain the hydrazinolysis product (the hydrazide), from which we synthesized novel hydrazones by treatment with aldehydes and ketones. 相似文献
4.
V. V. Dovlatyan K. A. Éliazyan V. A. Pivazyan 《Chemistry of Heterocyclic Compounds》1997,33(12):1438-1440
Reaction of 2-N-potassiocyanamino-4,6-bisisopropyl(dimethylamino)-sym-triazines with acid 1,2,2,2-tetrachloroethylamides leads to the formation of 2-N-cyano-N-(1-acylamino-2,2,2-trichloroethyl)amino-4,6-bisisopropyl(dimethylamino)-sym-triazines. Reaction with 1-hydroxy(methoxy)-2,2,2-trichloroethylamides of chloroacetic acid leads to 2-(2-imino-4-oxooxazolidin-1-yl)-4,6-bis(dimethylamino)-sym-triazine and its 1-methoxy-2,2,2-trichloroethyl derivative substituted at the position 3 of the oxazolidine ring. 相似文献
5.
V. V. Dovlatyan K. A. Éliazyan S. M. Saakyan R. G. Mirzoyan 《Chemistry of Heterocyclic Compounds》1981,17(9):957-959
New 2-chloroethylthio derivatives of sym-triazine were obtained by the reaction of mercapto-sym-triazines and dichloroethane. It was established that these chlorides undergo cyclization to give 2-dialkylamino-4-oxo(thioxo)-4,5,6,7-tetrahydrothiazolo [1,2-a]-sym-triazines, the structure of which was confirmed by PMR and mass-spectral data, at moderate temperatures.See [7] for Communication 7.Translated f rom Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1275–1278, September, 1981. 相似文献
6.
R. G. Mirzoyan S. M. Saakyan P. B. Terent'ev K. A. Éliazyan V. V. Dovlatyan 《Chemistry of Heterocyclic Compounds》1982,18(9):983-985
Intense [M-Cl]+ and [M-CT2=CCNCl]+ ion peaks are characteristic for the mass spectra of 4-(-chloro--cyanoethylmercapto)-sym-triazines. The introduction of monoalkylamino groups into the 2 and 6 positions of the heteroring does not lead to the development of [M-HCl]+ ion peaks in the mass spectra or to a change in the characteristic fragmentation pathways.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1268–1270, September, 1982. 相似文献
7.
2-Methoxy (methylthio)-4-(1, 3-dichloropropoxy)-and 2-methoxy (methylthio)-4-(3-chloro-1-propoxy)-6-dimethylamino-sym-triazines
were synthesized and subjected to thermolysis, as a result of which chloromethyltetrahydrooxazolo-, N-2, 3-di-chloropropyl-sym-triazines
and tetrahydrooxazino-and tetrahydrothiazino-sym-triazines, respectively, were obtained. The thermolysis of haloalkoxy-sym-triazines
proceeds via a concerted mechanism.
See [4] for communication 4.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 411–415, March, 1980. 相似文献
8.
The action of arylsulfonyl chlorides on 2-amino-4-methoxy-6-methylpyrimidine in pyridine gave 2-arylsulfonylamido-4-methoxy-6-methylpyrimidines, which were alkylated at the amide fragment, while the action of hydrazine hydrate led to nucleophilic replacement of the methoxy group. The resultant hydrazinopyrimidines were converted into azidopyrimidines and N-pyrimidinyldithiocarbazinates. Potassium salt of 2-p-toluenesulfonylamido-4-methoxy-6-methylpyrimidine dithiocarbazinate reacted with dimethyl sulfate to give the S-methyl derivative, while the reaction with chloroacetonitrile gave thiazolidinylaminopyrimidine. The chlorination using N-chlorosuccinimide yielded only 5-chloropyrimidines. 相似文献
9.
A. P. Hyengoyan K. A. Eliazyan V. A. Pivazyan E. A. Khazaryan V. V. Dovlatyan 《Chemistry of Heterocyclic Compounds》2005,41(8):1062-1065
We have used 1H NMR to study the amine-imine tautomerism of some esters and amides of 2-N-labeled 4-methylthiazole-5-carboxylic acids and
5-carbamic acids. We have shown that the nature of the substituents of the 2-NHR1, 5-COR2, or 5-NHCOR2 groups affects that position of the tautomeric equilibrium.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1240–1243, August, 2005. 相似文献
10.
V. V. Dovlatyan É. N. Ambartsumyan L. L. Gyul'budagyan G. S. Amazaspyan 《Chemistry of Heterocyclic Compounds》1993,29(8):949-951
The action of potassium salts of cyanoamino-symm-triazines on esters of chloroacetic and bromomalonic acids gave carbonylalkylamino-symm-triazines. The solvolysis of these esters proceeds with heterocyclilzation, leading to the formation of hydantoin derivatives.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1114–1116, August, 1993. 相似文献