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1.
《合成通讯》2013,43(17):2643-2650
ABSTRACT The intermolecular reductive coupling of 1,1-diaryl-2,2-dicyanoethylenes or 1,1-diaryl-2-cyano-2-ethoxycarbonylethylenes with aromatic nitriles induced by samarium and catalytic iodine was studied. 3H-Pyrroles were prepared in moderate to good yields under neutral and mild conditions. 相似文献
2.
《合成通讯》2013,43(15):2643-2656
Abstract The intermolecular reductive coupling of 1,1-diaryl-2,2-dicyanoethylenes or 1,1-diaryl-2-cyano-2-ethoxycarbonylethylenes with ketones or chalcones induced by samarium (II) iodide was studied. Functionalized 2,3-dihydrofuran and cyclopentenylamine derivatives were prepared in moderate to good yields under neutral and mild conditions. 相似文献
3.
4.
A. V. Stepakov A. G. Larina O. V. Radina V. M. Boitsov A. P. Molchanov 《Chemistry of Heterocyclic Compounds》2008,44(4):430-434
The reactions of 1,1-diaryl-2-(diphenylvinylidene)cyclopropanes and 1,1-diaryl-2-(2-phenylpropenylidine) cyclopropanes with
aromatic amines in the presence of BF3·Et2O leads to the formation of pyrrolidine derivatives.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 552–557, April, 2008. 相似文献
5.
Alexander V. Stepakov Anna G. LarinaVitaly M. Boitsov Alexander P. MolchanovVladislav V. Gurzhiy Galina L. Starova 《Tetrahedron letters》2012,53(27):3411-3415
The reactions of unactivated bis(methylene)cyclopropanes with nitrones and nitrile oxides have been investigated. The 1,1-diaryl-2-isopropylidene-3-methylenecyclopropanes react with the C,N-diarylnitrones to give a mixture of 2,2-dimethyl-1,6-diaryl-3-(diarylmethylene)piperidin-4-ones and 5-methyl-1-aryl-1-(arylamino)-4-(diarylmethylene)hex-5-en-3-ones. 2,3-Dihydro-3-methylenepyridin-4(1H)-ones are obtained by reaction of 1,1-diaryl-2-isopropylidene-3-methylenecyclopropanes with nitrile oxides. 相似文献
6.
Wadie Tadros Alfy Badie Sakla Sami Bassili Awad Nadia Fouad Abdul-Malik 《Helvetica chimica acta》1973,56(6):1829-1837
Xanthenyl and thioxanthenyl halides added readily to asymmetric diarylethylenes and their 2-halogeno-derivatives to give after dehydrohalogenation 1,1-diaryl-2-[xanthen(orthioxanthen)-9-yl]-ethylenes and 1,1-diaryl-2-halogeno-2-[xanthen(or thioxanthen)-9-yl]-ethylenes. The thioxanthenylethylenes were also obtained by another way. Reactions of these ethylenes with bromine, chlorine or sulfuryl chloride were influenced by the halogen and the nature of the p-substituent. Dehydrohalogenation of the 2-halogenoxanthenyl(or thioxanthenyl) ethylenes gave the corresponding 1,1-diaryl-2-[xanthen(or thioxanthen)-9-ylidene]-ethylenes. 相似文献
7.
The reactions of 1,1-diphenylethene, 1,1-bis(4-chlorophenyl)ethene, 1,1-bis(4-methylphenyl)ethene, and 1,1-bis(4-methoxyphenyl)ethene with 3,5-diacetyl-2,6-heptanedione in the presence of manganese(III) acetate in acetic acid at 80° yielded 4,6-diacetyl-8,8-diaryl-1,3-dimethyl-2,9-dioxabicyclo[4.3.0]non-3-enes (41-48%), 5-acetyl-2,2-diaryl-6-methyl-2,3-dihydrobenzo[b]furans (20–21%), 3-acetyl-5,5-diaryl-2-methyl-4,5-dihydrofurans (5–10%), and benzophenones (3–7%). Similarly, the reactions of 1,1-diarylethenes with dimethyl 2,4-diacetyl-1,5-pentanedioate or diethyl 2,4-diacetyl-1,5-pentanedioate gave the corresponding 4,6-bis(alkoxycarbonyl)-8,8-diaryl-1,3-dimethyl-2,9-dioxabicyclo[4.3.0]non-3-enes in moderate yields. 相似文献
8.
Palladium-catalyzed combined two-step one-pot protocol for the synthesis of 2,3-diaryl-1-indenones has been disclosed using 1,1-dibromoalkenes, triarylbismuth reagents and 2-halobenzaldehydes. This combined catalytic protocol is operationally simple and comprises the in situ domino synthesis of diarylacetylenes through cross-coupling of 1,1-dibromoalkene with triarylbismuths followed by Heck–Larock annulation employing 2-halobenzaldehydes to deliver 2,3-diaryl-1-indenones in moderate to good yields. This demonstrates the concept of combined catalytic reactions involving two-step one-pot protocol conditions. 相似文献
9.
H. H. Otto 《Monatshefte für Chemie / Chemical Monthly》1973,104(2):526-537
Zusammenfassung Diarylpentadienone (1) ergeben mit Malonester (2) entweder 2,6-Diaryl-4-oxo-5-hexen-1,1-dicarbonsäurediester (3) oder 2,6-Diaryl-4-oxo-cyclohexan-1,10dicarbonsäurediester (5). Das sterische Verhalten von3 und5 wird durch IR- und NMR-Untersuchungen ermittelt sowie die sterischen Gesichtspunkte der Gesamtreaktion diskutiert. Weiter werden die Bedingungen zur Darstellung — besonders die Verwendbarkeit verschiedener basischer Katalysatoren — untersucht.
Mit 2 Abbildungen
Auszugsweise vorgetragen anläßlich der 75-Jahr-Feier des VöCh, Wien, 17. bis 20. Mai 1972. 相似文献
On the reactions of 1.4-pentadien-3-ones with malonates
Diarylpentadienones (1) react easily with malonates (2) to give diesters of 2.6-diaryl-4-oxo-5-hexen-1.1-dicarboxylic acids (3) and of 2.6-diaryl-4-oxo-cyclohexane-1.1-dicarboxylic acids (5), resp. The steric behaviour of3 and5 is established by IR- and NMR-spectroscopy and the influence of some basic catalysts on the reaction products is discussed.
Mit 2 Abbildungen
Auszugsweise vorgetragen anläßlich der 75-Jahr-Feier des VöCh, Wien, 17. bis 20. Mai 1972. 相似文献
10.
Md. Ataur Rahman 《Tetrahedron letters》2009,50(33):4759-441
Iodoarylation of arylacetylenes with electron-rich arenes using a simple reagent system: I2 and PhI(OCOPh)2 proceeded regio- and stereoselectively to give trans adducts, 1,1-diaryl-2-iodoethenes, in good to high yields. 相似文献
11.
M. A. Salama L. A. Almotabacani 《Phosphorus, sulfur, and silicon and the related elements》2013,188(2):305-319
4,5-Diaryl-2,3-dihydro-2-mercaptoimidazoles (2a–e) were synthesized. They reacted with chloroacetic acid in gl. acetic acid/Ac 2 O in presence of anhyd. sodium acetate afforded 5,6-diaryl-2,3-dihydro-imidazo[2,1-b]thiazol-3-ones (3a–d). Also these compounds were prepared by the action of chloroacetyl chloride on compounds (2) in pyridine. Compounds (3a–d) on condensation with aromatic aldehydes yield 2-arylmethylene-5,6-diaryl-2,3-dihydroimidazo[2,1-b]-thiazol-3-ones (4a–q). The latter compounds were prepared directly by the reaction of (2) with chloroacetic acid and the aromatic aldehydes. Compounds (3a–d) coupled with aryldiazonium salts in pyridine to give 2-arylhydrazono-5,6-diaryl-2,3-dihydroimidazo[2,1-b]thiazol-3-ones (5a–r). Also compounds (2) when reacted with 2 or 3-bromopropionic acid afford 2,3-di-hydro-5,6-diaryl-2-methylimidazo[2,1-b]thiazol-3-ones (6a–d) and 2,3-di-hydro-6,7-diaryl imidazo-[2,1-b]-1,3-thiazin-4-ones (7a–d), respectively. Compounds (3, 6, and 7) have been cleaved by aromatic amines to give the corresponding 2-(4′,5′-diaryl-2′,3′-dihydroimidazol-2′-yl)thioacetanilide (8a–f), 2-(2′,3′-dihydro-4′,5′-diaryl imidazol-2′-yl)thiopropionamide (9a–c), and 3-(2′,3′-dihydro-4′,5′-diaryl-imidazol-2′-yl)thiopropionamide (10a–d) respectively. All the prepared compounds show considerable antimicrobial activity against bacteria, yeast, and fungi. 相似文献
12.
2,2-Dinitromalononitrile reacted with phenylethene and 1-phenylpropene through intermediate aci-nitromalononitrile ester and subsequent 1,3-dipolar cycloaddition of the second alkene molecule with formation of substituted
5-phenyltetrahydroisoxazole-3,3-dicarbonitriles. Reactions of 2,2-dinitromalononitrile with 2-phenylpropene or p-methoxyphenylethene resulted in the formation of 2-(1-aryl-2-nitroethyl)-2-nitromalononitriles. 1,1-Diarylethenes reacted
with 2,2-dinitromalononitrile to give conjugated 1,1-diaryl-2-nitroethenes due to steric hindrances. 相似文献
13.
Novel sulfur-containing spiro compounds such as 7,11-diaryl-9-thia-2,4-diazaspiro [5,5] undecane-1,3,5-trione 9,9-dioxides ( 2 ), 6,10-diaryl-8-thia-2,3-diazas-piro[4,5]decane-1,4-dione-8,8-dioxides ( 3 ) and 6,10-diaryl-2-oxo-8-thia-3-azaspiro [4,5] decane-1,4-dione-8,8-dioxides ( 5 ) have been prepared by the condensation of 4-dimethoxycarbonyl/diethoxycarbonyl-3,5-diaryl-1-thiane 1,1-dioxides ( 1 ) with urea, hydrazine hydrate, and hydroxylamine hydrochloride, respectively. The N-substituted derivatives ( 4 and 6 ) of 3 and 5 have also been prepared by acylation and nitrosation. The structures of 2, 3 , and 5 were established by IR, 1H NMR, and 13C NMR spectral studies, respectively. 相似文献
14.
Alexander I. Zbruyev 《Tetrahedron》2007,63(20):4297-4303
A convenient and effective synthetic approach to potentially radiochromic polyarene derivatives of bi- and tricyclic aziridines utilizing modified Suzuki-Miyaura cross-coupling with catalysis in micellar media has been developed. A series of polyarene substituents were introduced into 1,5-diaryl-3,5a-dihydro-1H-azireno[1,2-c]imidazoles, 1,6-diaryl-1,3,4,6a-tetrahydroazireno[1,2-a]pyrazines, and 1,2-diaryl-1,1a-dihydroazireno[1,2-a]quinoxalines without degradation of the highly reactive aziridine ring system. 相似文献
15.
S. B. Nosachev O. Yu. Poddubnyi A. V. Velikorodov A. G. Tyrkov 《Russian Journal of Organic Chemistry》2010,46(5):674-677
Three-component heterocyclization of 2-aryl-1,1-dicyanoethenes with L-proline and aldehydes leads to the formation of 1-aryltetrahydro-1H-pyrrolysines that under acid (alkaline) hydrolysis conditions are converted into derivatives of 6-carboxy-7-phenyl-2,3,5,7a-
or 1,3-diaryl-2-carboxy-5,6,7,7a-tetrahydro-1H-pyrrolysine. 相似文献
16.
Mohamed T. Omar Aly M. Youssef Fatma A. Sherif 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1-4):267-270
Abstract 5-Phenylrnethylene-2, 3-diaryl-4-oxo-1,3-thiazolidine-1-oxides 2 which synthesised via peracetic acid oxidation of the respective 1, 3-thiazolidines 1 reacted with benzylamine and Grignard reagents to afford the respective 5-α-substituted benzyl-2, 3-diaryl-4-oxo-1,3-thiazolidine-l-oxides 3 and 4. Structures of 3 and 4 were based on analytical and spectral evidence. 相似文献
17.
2,2-二芳基-1,1,1-三氯乙烷(1)与TiCl_4-Zn起脱氯还原重排反应生成1,2-二芳基乙烯(3)。与TiCl_4-Mg反应时,2,2-二(对甲苯基)-1,1,1-三氯乙烷和2,2-二(对乙氧苯基)-1,1,1-三氯乙烷(1c,1d)主要得到重排产物2,2-二芳基乙烯(3)和2,2-二芳基-1-氯乙烯(4),后者可能是由相应的2,2-二芳基-1,1-二氯乙烷(2)生成的。但2,2-二苯-1,1,1-三氯乙烷和2,2-二(对氯苯基)-1,1,1-三氯乙烷(1a,1b)与此试剂反应只生成还原产物2,2-二芳基-1,1-二氯乙烷(2a,2b)。 相似文献
18.
Sylvie Large-Radix 《Journal of fluorine chemistry》2003,124(2):147-149
In the presence of a stoichiometric amount of Bu4NF·3H2O, (trifluoromethyl)trimethylsilane reacts with aromatic thiones in both thiophilic and carbophilic ways to deliver, in medium yield, a mixture of (trifluoromethylthio)diarylmethane and 1,1-diaryl-2,2,2-trifluoroethanethiol, the former product being the major one. 相似文献
19.
The 2-aryl-3-iodo-4-(phenylamino)quinolines undergo one-pot palladium-mediated C-I and C-H bond activation and subsequent Suzuki-Miyaura cross-coupling with arylboronic acids under anhydrous conditions to afford mixture of 2,3-diaryl-4-(phenylamino)quinolines (minor) and 2-aryl-4-([(1,1′-biaryl)-2-yl]amino)quinoline derivatives (major). The 2,3-diaryl-4-(phenylamino)quinolines were isolated as major products when 2 M K2CO3 was used as a base. A plausible mechanism, which implicates a six-membered palladacycle intermediate is proposed for the formation of the observed mixture of products. The prepared compounds were characterized using a combination of spectroscopic and X-ray crystallographic techniques. 相似文献
20.
Yu. N. Bannikova A. N. Maslivets Z. G. Aliev 《Russian Journal of Organic Chemistry》2007,43(9):1334-1337
Methyl 1-aryl-3-benzoyl-4,5-dioxo-4,5-dihydro-1H-pyrrole-2-carboxylates reacted with 3-arylamino-5,5-dimethylcyclohex-2-en-1-ones in boiling benzene to give the corresponding 1,1′-diaryl-3′-benzoyl-4′-hydroxy-6,6-dimethyl-1,1′,2,4,5,5′,6,7-octahydrospiro[indole-3,2′-pyrrole]-2,4,5′-triones and 1′-aryl-4-arylamino-3-benzoyl-6′,6′-dimethyl-1′,2′,4′,5′,6′,7′-hexahydro-5H-spiro[furan-2,3′-indole]-2′,4′,5-triones whose structure was proved by X-ray analysis. 相似文献