共查询到20条相似文献,搜索用时 15 毫秒
1.
Tatýana E. Glotova Nadezhda I. Protsuk Alexander I. Albanov Valentin A. Lopyrev Gennadii V. Dolgushin 《Central European Journal of Chemistry》2003,1(3):222-232
The nucleophilic addition of 2,4-dithiobiurete, 1- and 1,4-substituted 2,4-dithiobiuretes (2 a-e) with benzoylacetylene (1) has been studied. 2-(Benzoylmethyl)-4-(R1-imino)-6-(R2-imino)dihydro-4H-1,3,5-dithiazinium perchlorates (3 a-e) are obtained in glacial acetic acid (AcOH) in the presence of equimolar quantities of HClO4. The reaction of benzoylacetylene with 1,5-diphenyl-2,4-dithiobiurete in either of MeOH, C6H6, or MeCN solvents proceeds non-selectively to give a mixture of products such as 2-(benzoylmethyl)-4,6-di(phenylimino)dihydro-4H-1,3,5-dithiazine
(5), 2-(benzoylmethyl)-4-(β-benzoylvinyl)thio-3-phenyl-6-(phenylimino)-3,6-dihydro-2H-1,3,5-thiadiazine (8), 2-(benzoylmethyl)-1,3-diphenylhexahydro-1,3,5-triazine-4,6-dithione (7) and N-(β-benzoylvinyl)-N-phenylthioureas (6). 相似文献
2.
M. V. Budnikova D. B. Rubinov P. V. Kurman A. L. Mikhal'chuk 《Chemistry of Heterocyclic Compounds》2003,39(1):101-109
Ionic hydrogenation of 8-aza-16-thiagona-1,3,5(10),13-tetraene-12,17-diones has been carried out by regioselective reduction of the carbonyl part of the aminovinylketothiolactone group to give 8-aza-16-thiagona-1,3,5(10),13-tetraen-17-ones. 相似文献
3.
B. S. Fedorov M. A. Fadeev A. A. Gidaspov E. A. Kosareva V. V. Bakharev 《Chemistry of Heterocyclic Compounds》2005,41(2):228-234
The aziridation of 2-R-4,6-bis(trinitromethyl)-1,3,5-triazines containing electron-donor substituents has been studied. It was found that the corresponding 4-azido-2-dialkylamino-6-trinitromethyl-1,3,5-triazines are formed when R = NMe2, NEt2. When R = O–NMe4
+ a novel reaction route was discovered leading to the tetramethylammonium salt of 5-polynitromethyltetrazolo[1,5-a]-1,3,5-triazin-7-one which is formed as a result of azido-tetrazole and lactim-lactam tautomeric conversion. Denitration of this salt at the trinitromethyl group occurs with retention of the tetrazolo-1,3,5-triazine structure. An X-ray analysis was carried out for the denitration product which was the dipotassium salt of 5-dinitromethyltetrazolo[1,5-a]-1,3,5-triazin-7-one.__________Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 259–266, February, 2005. 相似文献
4.
V. V. Bakharev A. A. Ghidaspov D. B. Krivolapov E. V. Mironova I. A. Litvinov 《Chemistry of Heterocyclic Compounds》2006,42(8):1051-1058
2-Amino-4-azido-1,3,5-triazin-6(1H)-ones were synthesized by successive substitution of the trinitromethyl groups in 2-amino-4,6-bis(trinitromethyl)-1,3,5-triazines
under the influence of azide and nitrite ions. Interaction of 2-amino-4-azido-1,3,5-triazin-6(1H)-ones with bases led to the
azido-tetrazole tautomeric conversion give salts of 5-aminotetrazolo[1,5-a]-1,3,5-triazin-7-one.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1211–1219, August, 2006. 相似文献
5.
The alkylation of salicylaldehyde and o-hydroxyacetophenone with 2-amino-4-arylamino-6-chloromethyl-1,3,5-triazines is accompanied by intramolecular condensation and affords 2-aryl-4-arylamino-6-benzo[b]furan-2-yl-1,3,5-triazines.__________Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2758–2759, December, 2004. 相似文献
6.
Victor V. Dotsenko Konstantin A. Frolov Sergey G. Krivokolysko Alexander N. Chernega Victor P. Litvinov 《Monatshefte für Chemie / Chemical Monthly》2006,137(8):1089-1098
Summary. 3-(Het)aryl-2-cyanoprop-2-enethioamides easily reacted with primary amines and excessive formaldehyde under mild conditions
to afford pyrimido[6,1-b][1,3,5]thiadiazine derivatives in moderate yields. Furthermore, 2-cyano-2-cyclohexylideneethanethioamide reacted in the similar
Mannich-type manner to give spiro-conjugated pyrimido-1,3,5-thiadiazines. The structure of 3,7-dibenzyl-8-(fur-2-yl)-3,4,7,8-tetrahydro-2H,6H-pyrimido[6,1-b][1,3,5]thiadiazine-9-carbonitrile was determined by X-ray diffraction analysis. 相似文献
7.
A. V. Popov A. V. Shastin E. L. Luzina A. N. Pushin T. N. Gavrishova 《Russian Chemical Bulletin》1999,48(8):1548-1552
A procedure was developed for the synthesis of substituted 2-amino-4,6-bis(nonafluoro-tert-butyl)-1,3,5-triazines from 2-chloro-4,6-bis(nonafluoro-tert-butyl)-1,3,5-triazine and aliphatic and aromatic amines. The data of19F NMR spectroscopy are indicative of the presence of a barrier to internal rotation.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1568–1572, August, 1999. 相似文献
8.
V. V. Dotsenko S. G. Krivokolysko E. B. Rusanov A. V. Gutov V. P. Litvinov 《Chemistry of Heterocyclic Compounds》2007,43(7):906-912
The interaction of N-methylmorpholinium 1-amino-2,4-dicyano-4-ethoxycarbonyl-1,3-butadienethiolate with primary amines and
formaldehyde leads to the formation of ethyl esters of 7-cyano-6-thioxo-1,3,4,6-2H-pyrido[1,2-a][1,3,5]triazine-9-carboxylic
acid in place of the expected derivatives of pyrido[2,1-b][1,3,5]thiadiazine. The structure of the ethyl ester of 7-cyano-3-phenyl-6-thioxo-1,3,4,6-2H-pyrido[1,2-a][1,3,5]triazine-9-carboxylic
acid was demonstrated by X-ray structural analysis.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 1075–1081, July, 2007. 相似文献
9.
A. V. Shastin T. I. Godovikova B. L. Korsunskii 《Chemistry of Heterocyclic Compounds》2003,39(5):624-631
The reaction of 2,4,6-tris[di(tert-butoxycarbonyl)nitromethyl]-1,3,5-triazine with ammonia, amines, and hydrazine has been studied. It was possible to substitute one of the di(tert-butoxycarbonyl)nitromethyl groups in this compound in the presence of ammonia, primary aliphatic amines, dimethylamine, and morpholine. The reaction with hydrazine leads to both mono- and disubstituted products. A double dealkoxylation occurs in the presence of diethylamine to give the bis(dimethylammonium) salt of 2,4-bis(tert-butoxycarbonylnitromethyl)-6-[di(tert-butoxycarbonyl)nitromethyl]-1,3,5-triazine. 相似文献
10.
A. V. Shastin T. I. Godovikova T. S. Pivina N. I. Golovina G. V. Shilov Yu. A. Strelenko B. L. Korsunskii V. P. Lodygina 《Russian Chemical Bulletin》2006,55(6):1060-1065
The structure of 2,4,6-tris[di(tert-butoxycarbonyl)methylidene]hexahydro-1,3,5-triazine was studied by quantum chemistry, NMR and IR spectroscopy, and X-ray
diffraction. This compound exists exclusively in the hexahydro-1,3,5-triazine form both in solution and in the solid phase,
although due to the loss of the aromatization energy, this structure should be less stable than a 1,3,5-triazine structure.
The formation of strong intramolecular hydrogen bonds confirmed by NMR and IR spectroscopy and X-ray diffraction data may
be a main reason for stabilization of the hexahydro-1,3,5-triazine isomer.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1022–1026, June, 2006. 相似文献
11.
A. V. Shastin T. I. Godovikova B. L. Korsunskii 《Chemistry of Heterocyclic Compounds》2003,39(8):1037-1040
Acylation of 2,4,6-tris(tert-butoxycarbonylmethyl)-1,3,5-triazine with acetic anhydride in the presence of lithium hydride with subsequent removal of the tert-butoxycarbonyl groups with trifluoroacetic acid leads to 2,4,6-tris(acetonyl)-1,3,5-triazine, the cyclic analog of -cyanoacetone. The special spectral features of this compound compared with triazines obtained previously are discussed. 相似文献
12.
S. N. Mikhailichenko A. A. Chesnyuk L. D. Konyushkin S. I. Firgang V. N. Zaplishny 《Chemistry of Heterocyclic Compounds》2006,42(5):642-647
The routes of base and acid hydrolysis of sym-triazine mononitriles has been studied for aqueous or aqueous-alcohol media.
Depending on the pH of the medium, the concentration of reagents, and the temperature it was found that the hydrolysis led
to the formation of amides, oxo or alkoxy 1,3,5-triazines, or to an unstable sym-triazine carboxylic acid, the latter leading
to formation of substituted sym-triazines. A novel series of tetrazolyltriazines has been prepared by the reaction of the
mononitriles with sodium azide and their alkylation has been studied.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 731–737, May, 2006. 相似文献
13.
K. A. Frolov V. V. Dotsenko S. G. Krivokolysko V. P. Litvinov 《Russian Chemical Bulletin》2005,54(9):2226-2228
Reactions of (Z)-5-benzylidene-2-thiohydantoin with formaldehyde and primary aromatic amines afforded novel derivatives of imidazo[2,1-b][1,3,5]thiadiazine in 50–69% yields.
Dedicated to Academician N. S. Zefirov on the occasion of his 70th birthday.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 2158–2160, September, 2005. 相似文献
14.
I. V. Ovchinnikov A. S. Kulikov M. A. Epishina N. N. Makhova V. A. Tartakovsky 《Russian Chemical Bulletin》2005,54(5):1346-1349
Earlier unknown N-trinitroethyl derivatives of acetylhydrazine, 4-amino-1,2,4-triazole, and 2,4,6-triamino-1,3,5-triazine, which are potential
components for gas-generating formulations, were synthesized.
Dedicated to Academician N. K. Kochetkov on the occasion of his 90th birthday.
__________
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 1306–1309, May, 2005. 相似文献
15.
Reactions ofN,N-bis(chloromethyl)amides withN,N′-diacyl derivatives of ethylenediamine (oro-phenylenediamine) result in formation of the corresponding 1,3,5-triacylated perhydro-1,3,5-triazepines (or their benzoanalogs)
or 1,3-diacylated imidazolidines (or their benzoanalogs). Reactions ofN,N-bis(chloromethyl)amides withN,N′-ditosylated trimethylenediamine occur in a similar way. The direction of the reactions depends on the type of the acyl substituents
and the strength of the bases.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2270–2273, November, 1998. 相似文献
16.
Summary Arylamidines2 react with 5-methoxymethylen-2,2-dimethyl-1,3-dioxan-4,6-dione5 to give 2,4-diaryl-1,3,5-triazines in moderate to good yields.5 can be comprehended as a formic acid derivative which transfers a C1-building block. Other formic acid derivatives give only poor to moderate yields of triazines by treatment with amidines. The synthetic method is applicable to aromatic amidines.
Eine einfache Synthese von 2,4-Diaryl-1,3,5-triazinen
Zusammenfassung Die Arylamidine2 reagieren mit 5-Methoxymethylen-2,2-dimethyl-1,3-dioxan-4,6-dion5 in guten Ausbeuten zu 2,4-Diaryl-1,3,5-triazinen. Verbindung5 kann als Derivat der Ameisensäure aufgefaßt werden, welches einen C1-Baustein überträgt. Andere Derivate der Ameisensäure ergeben bei Umsetzung mit Amidinen nur schlechte Ausbeuten an Triazinen. Die beschriebene Methode ist auf aromatische Amidine anwendbar.相似文献
17.
A. A. Chesniuk S. N. Mikhailichenko V. S. Zavodnov V. N. Zaplishny 《Chemistry of Heterocyclic Compounds》2002,38(2):177-182
New quaternary ammonium salts of monochloro-4,6-disubstituted 1,3,5-triazines have been obtained. These compounds are convenient synthons for the synthesis of new cyano, alkoxy, and other derivatives of sym-triazine. Some conversions of the synthesized salts have been studied. An elimination-isomerization reaction of the sym-triazine ring into a 2-oxo-1,2-dihydro-sym-triazine ring was discovered. 相似文献
18.
M. V. Budnikova A. L. Mikhal'chuk D. B. Rubinov 《Chemistry of Heterocyclic Compounds》2004,40(2):227-230
The reaction of 8-aza-16-thiagona-1,3,5(10),13-tetraene-12,17-dienes with ethoxyimine in dimethyl sulfoxide yields the corresponding 12(E)-ethoxyimino derivatives. The physicochemical properties of these compounds were studied. 相似文献
19.
E. V. Bartashevich P. V. Plekhanov G. L. Rusinov V. A. Potemkin A. V. Belik O. N. Chupakhin 《Russian Chemical Bulletin》1999,48(8):1553-1557
A method was proposed for estimating the possibility of cyclization of adducts of resorcinol with pyrimidines to form oxadiazocines
based on the conformational criterion and analysis of charges on the C(5) atom of the pyrimidine ring and on the H atom of
the hydroxy group of the resulting adducts. A series of new derivatives of 4,5-dihydro-11H-5,11-methanobenzo[g]azolo[1,3,5]oxadiazocines were synthesized.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1573–1577, August, 1999. 相似文献
20.
B. S. Fedorov A. N. Utienyshev A. A. Ghidaspov E. V. Kachanovskaya V. V. Bakharev M. A. Fadeev 《Chemistry of Heterocyclic Compounds》2005,41(4):496-502
A new heterocyclic compound, 3-methyl-5-trinitromethyltetrazolo[1,5-a]-1,3,5-triazin-7-one, was synthesized by the reaction of methyl iodide and the silver salt of 5-trinitromethyltetrazolo[1,5-a]-1,3,5-triazin-7-one. An X-ray diffraction structural analysis of this product was carried out and feasibility was demonstrated for the nucleophilic substitution of the trinitromethyl group in this compound by the action of phenol, phenol derivatives, and thiophenol.__________Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 582–588, April, 2005. 相似文献