共查询到20条相似文献,搜索用时 31 毫秒
1.
T. I. Mukhanova L. M. Alekseeva A. S. Shashkov V. G. Granik 《Chemistry of Heterocyclic Compounds》2005,41(2):221-227
Treatment of the enamines of acetylacetone and benzoylacetone with 2-methyl-4,7-dioxobenzothiazole under Nenitzescu reaction conditions gave furo[2,3-e]benzothiazoles (in acetic acid) and pyrrolo[2,3-e]benzothiazoles (in nitromethane). Using enamines of acetoacetic ester gave exclusively pyrrolo[2,3-e]benzothiazoles.__________Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 252–258, February, 2005. 相似文献
2.
S. A. Yamaskhin G. A. Romanova E. A. Oreshkina N. V. Zhukova 《Chemistry of Heterocyclic Compounds》2006,42(1):77-85
It has been shown that the condensation reaction of 5-amino-2,3-dimethyl-and 1,2,3-trimethylindoles with 4,4,4-trifluoroacetoacetic
ester occurs either via the trifluoromethylcarbonyl or the ester group depending upon the conditions under which it is carried
out. Under thermal conditions (refluxing in diphenyl) the enaminocrotonates formed are readily converted to pyrrolo[3,2-f]quinolines
and the amides cyclize in trifluoroacetic acid at 78°C to give pyrrolo[2,3-g]quinolines.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 86–96, January, 2006. 相似文献
3.
S. A. Yamashkin E. A. Oreshkina I. S. Romanova M. A. Yurovskaya 《Chemistry of Heterocyclic Compounds》2006,42(1):86-91
The reaction of 6-amino-2,3-dimethyl-and 6-amino-1,2,3-trimethyl-5-methoxy(methyl)indoles with 4,4,4-trifluoroacetoacetic
ester and of 6-amino-5-methoxy-1,2,3-trimethylindole also with other β-dicarbonyl compounds has been studied. It was found
that all of the amines investigated undergo condensation readily to form the corresponding enamines while the possible subsequent
cyclization to give pyrrolo[2,3-f]quinolines was found only for the condensation product of 6-amino-2,3,5-trimethylindole
with 4,4,4-trifluoroacetoacetic ester.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp 97–103, January, 2006. 相似文献
4.
S. A. Yamashkin G. A. Romanova I. S. Romanova M. A. Yurovskaya 《Chemistry of Heterocyclic Compounds》2003,39(9):1188-1196
The behavior of 5-amino-2-phenyl- and 5-amino-1-methyl-2-phenylindoles in reactions with acetoacetic, trifluoroacetoacetic, and ethoxymethylenemalonic esters, leading to the preparation of pyrrolo[2,3-g]- and pyrrolo[3,2-f]quinolines with functional substituents has been studied. 相似文献
5.
S. A. Yamashkin E. A. Oreshkina I. S. Romanova M. A. Yurovskaya 《Chemistry of Heterocyclic Compounds》2005,41(10):1280-1289
The comparative reactivities of 6-amino-1,2,3-trimethyl- and 6-amino-7-methoxy-2,3-dimethylindoles with acetylacetone, dibenzoylmethane,
and with aceto- and trifluoroacetoacetic esters have been studied. Methods have been developed for the preparation of some
functionally substituted pyrrolo-[3,2-g]quinolines.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1529–1539, October, 2005. 相似文献
6.
Summary A series ofg-annelated quinolines was synthesized, employing pyrido[2,3-d]pyridazine as an azadiene in inverse-electron-demandDiels-Alder reactions with electron-rich dienophiles (enamines and a ketene-N,S-acetal). In cases where isomer mixtures were obtained, NOE difference spectroscopy was used for structural assignment.Dedicated with best wishes to Prof. Dr. F. Sauter on the occasion of his 65th birthday 相似文献
7.
S. M. Medvedeva E. V. Leshcheva Kh. S. Shikhaliev A. S. Solov’ev 《Chemistry of Heterocyclic Compounds》2006,42(4):534-539
Based on the reaction of 8-R-4,5-dihydro-4,4-dimethyl[1,2]dithiolo[3,4-c]quinoline-1-thiones with oxalyl chloride followed
by the reactions of 1,3-dipolar cycloaddition and diene synthesis with participation of acetylenedicarboxylic acid dimethyl
ester, we have developed approaches to synthesis of novel polycondensed heterocyclic systems: [1,2]dithiolo[3,4-c]pyrrolo[3,2,1-ij]quinoline-4,5-dione,
6-(1,3-dithiol-2-ylidene)-1,2-dioxo-5-thioxo-7H-pyrrolo[3,2,1-ij]quinoline and 4,5-dioxospiro(pyrrolo)-[3,2,1-ij]thiopyrano[2,3-c]quinoline-11,2′-[1,3]dithiole.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 610–615, April, 2006. 相似文献
8.
N. N. Polygalova A. G. Mikhailovskii E. V. Vikhareva M. I. Vakhrin 《Chemistry of Heterocyclic Compounds》2007,43(7):900-905
It has been shown that the Chichibabin reaction of enamines of the 1,2,3,4-tetrahydroisoquinoline series and 1,2,3,4-tetrahydrobenzo[f]isoquinoline
series with p-bromophenacyl bromide leads to pyrrolo[2,1-a]isoquinoline derivatives. The same heterocyclic system is obtained
on interaction of 1-alkyl-3,4-dihydroisoquinolines or their benzo[f]-analogs with oxalyl chloride. The obtained dioxopyrrolines
form derivatives of benzo[g]quinoxalino[2,3-b]indolizine on condensation with o-phenylenediamine.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 1068–1074, July, 2007. 相似文献
9.
T. P. Glushchenko A. V Aksenov V. I. Goncharov 《Chemistry of Heterocyclic Compounds》2009,45(3):351-356
A method has been developed for the synthesis of 4-(2-quinolinyl)-1,2,3,3a-tetrahydropyrrolo-[1,2-a]quinolines based on the 1,3-dipolar cycloaddition reaction of α,β-unsaturated carbonyl compounds to 2,3′-biquinolinium salts.
Oxidation in benzene using MnO2 gave 4-(2-quinolinyl)-pyrrolo[1,2-a]quinolines. It was found that a side product of the 1,3-dipolar cycloaddition is 7,14-di-benzoyl-6,13-di(2-quinolyl)-6a,7,13a,14-tetrahydro-7a,14a-diazadibenzo[a,h]anthracene. Reaction of 1′-phenacyl-2,3′-biquinolinium salts with hydroxylamine in acetic acid gave 4-(2-quinolyl)imidazo-[1,2-a]quinolines.
*For Communication 24 see [1].
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 433–439, March, 2009. 相似文献
10.
I. V. Ukrainets N. L. Bereznyakova O. V. Gorokhova A. V. Turov S. V. Shishkina 《Chemistry of Heterocyclic Compounds》2007,43(8):1001-1007
The hydrogenation of the benzene part of the molecule in N-allyl-substituted 4-hydroxy-2-quinolinones does not affect the
nature of their bromination by molecular bromine and gives 2-bromomethyl-5-oxo-1,2,6,7,8,9-hexahydro-5H-oxazolo[3,2-a]quinolines.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1180–1188, August, 2007. 相似文献
11.
Summary The treatment of a mixture of linearly and angularly annelated 2-substituted oxazolo[4,5-f]quinolones (5a–c) and oxazolo[5,4-g]quinolones (6a–c) and similarly the treatment of 2-substituted oxazolo[5,4-f]quinolones (7a–c) and oxazolo[4,5-g]quinolones (8b,c) with POCl3 afforded substituted 4-chlorooxazolo[4,5-f]quinolines (9a–c) and 2-substituted 4-chlorooxazolo[5,4-f]quinolines (10b,c), respectively. Spectral characteristics of the synthesized derivatives (1H and13C NMR, IR, UV, and MS) are discussed.Dedicated to Prof.Fritz Sauter on the occasion of his 65th birthday 相似文献
12.
Chang Gon Lee 《Tetrahedron letters》2004,45(40):7409-7413
We developed an efficient synthetic method for indenoquinoline skeletons from Baylis-Hillman adducts. 4b,5,10a,11-Tetrahydroindeno[1,2-b]quinolin-10-ones and 7H-indeno[2,1-c]quinolines were prepared from Baylis-Hillman adducts in polyphosphoric acid. 相似文献
13.
S. A. Yamashkin E. A. Oreshkina N. V. Zhukova 《Chemistry of Heterocyclic Compounds》2007,43(8):1044-1051
A study was carried out on the reactions of 4-amino-2,3-dimethyl-and 4-amino-1,2,3-trimethylindoles with acetylacetone, dibenzoylmethane,
ethyl acetoacetate, ethyl trifluoroacetoacetate, and ethyl oxaloacetate. Methods were developed for the synthesis of a series
of substituted pyrrolo-[2,3-h]quinolines.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 8, pp. 1234–1242, August, 2007. 相似文献
14.
Subburethinam RameshRajagopal Nagarajan 《Tetrahedron letters》2011,52(38):4857-4860
An efficient and convenient one-pot intramolecular aza Diels-Alder approach for the synthesis of dihydrochromeno[4,3-b]pyrrolo[3,2-f]quinolines has been reported. Particularly valuable features of this methodology include simple execution, inexpensive catalyst, and good product yields. 相似文献
15.
T. I. Mukhanova L. M. Alekseeva A. S. Shashkov V. G. Granik 《Chemistry of Heterocyclic Compounds》2004,40(1):16-21
Derivatives of furo[2,3-f]quinoline were synthesized by the reaction of the enamines of acetylacetone and benzoylacetone with 2-methoxycarbonyl-4-oxo-5,8-quinolinequinone. A derivative of pyrrolo[2,3-h]quinoline was obtained from N-benzyl--aminocrotonic ester. 相似文献
16.
I. B. Dzvinchuk N. A. Tolmachova A. N. Chernega M. O. Lozinskii 《Chemistry of Heterocyclic Compounds》2009,45(2):194-200
The Hantzsch three-component cyclization of 4-(dimethylamino)benzaldehyde, cyclohexane-1,3-diones, and some 1,3-[N,C]-dinucleophiles
(5-amino-3-methyl-1-phenylpyrazole, 3,5-dimethoxyaniline, and 4-amino-1,3-dimethylpyrimidine-2,6-dione) proceeds in boiling
acetic acid with the splitting off N,N-dimethylaniline and the formation of polycondensed heterocyclic sytems with a γ-unsubstituted
pyridine ring (pyrazolo[3,4-b]quinoline, acridine, and pyrimido[4,5-b]quinoline).
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 244-251, February, 2009. 相似文献
17.
Kh. S. Shikhaliev E. V. Leshcheva A. S. Solov'ev 《Chemistry of Heterocyclic Compounds》2003,39(3):335-339
8-R-1-Aryl-4,4,6-trimethyl-4H-pyrrolo[3,2,1-ij]quinolines have been synthesized by the Bischler-Melau reaction in the series of 6-R-2,2,4-trimethylhydroquinolines. 相似文献
18.
A cyclotransformation of 6-trifluoroacetylpyrrolo[1,2-a]pyrazinium salts involving the trifluoroacetyl group carbon atom was
discovered and investigated.
__________
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1714–1719, November, 2007. 相似文献
19.
F. I. Zubkov V. P. Zaitsev A. S. Peregudov N. M. Mikhailova A. V. Varlamov 《Russian Chemical Bulletin》2007,56(5):1063-1079
A procedure was developed for the synthesis of hydrogenated furyl-substituted furo[3,2-c]quinolines, pyrano[3,2-c]quinolines, and 4-ethoxy-and 4-(2-oxopyrrolidin-1-yl)quinolines. The reactions of these compounds with acryloyl chloride
and maleic anhydride produce epoxyisoindolo[2,1-a]quinoline derivatives through successive acylation at the quinoline nitrogen atom and intramolecular exo-[4+2]-cycloaddition at the furan moiety.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 1023–1038, May, 2007. 相似文献
20.
A. M. Shestopalov K. S. Chunikhin L. A. Rodinovskaya 《Chemistry of Heterocyclic Compounds》2002,38(3):310-313
The reactions of nitrostyrenes with quinolinium ylide have been investigated. Previously unknown 2-aryl-1-benzoyl-3-nitro-1,2,3,3a-tetrahydropyrrolo[1,2-a]quinolines have been obtained and their stereochemistry has been established. 相似文献