Academic literature on the topic 'Cyclocondensation [3+2]'

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Journal articles on the topic "Cyclocondensation [3+2]"

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Kamimura, Akio, and Akikazu Kakehi. "Diastereoselective Cyclocondensation Reaction of 3-Formyl-2-isoxazolines." Chemistry Letters 21, no. 7 (1992): 1133–36. http://dx.doi.org/10.1246/cl.1992.1133.

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Jafari, Behzad, Sayfidin Safarov, Muattar Khalikova, Peter Ehlers, and Peter Langer. "Synthesis of 1,3,4-Thiadiazolo[2′,3′:2,3]imidazo[4,5-b]indoles." Synlett 30, no. 15 (2019): 1791–94. http://dx.doi.org/10.1055/s-0039-1690147.

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Hitherto unknown thiadiazolo[2′,3′:2,3]imidazo[4,5-b]indoles were synthesized for the first time by base-mediated cyclocondensation, bromination, and subsequent cyclization by two-fold Buchwald–Hartwig reactions.
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3

Marchalín, Štefan, and Josef Kuthan. "Cyclocondensation reactions of 3-aryl-2-benzylidene-3-oxopropanenitriles with acetylaromatic derivatives." Collection of Czechoslovak Chemical Communications 50, no. 8 (1985): 1862–69. http://dx.doi.org/10.1135/cccc19851862.

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Cyclocondensation of 3-aryl-2-benzylidene-3-oxopropanenitriles Ia and Ib with acetyl aromatic derivatives IIa-IIc in the presence of ammonium acetate affords 2,6-diaryl-4-phenyl-3-cyanopyridines IV and V. Reaction of the nitrile Ib with 1,2-diphenylethanone (III) gave 2-(4-biphenylyl)-4,5,6-triphenyl-3-cyanopyridine (VI). The relation between the structure of the synthesized pyridine derivatives IV-VI and their spectral properties is discussed.
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Nayak, Prakash S., Badiadka Narayana, Hemmige S. Yathirajan, Eric C. Hosten, Richard Betz, and Christopher Glidewell. "(2E)-3-(6-Methoxynaphthalen-2-yl)-1-(pyridin-3-yl)prop-2-en-1-one and its cyclocondensation product with guanidine, (4RS)-2-amino-4-(6-methoxynaphthalen-2-yl)-6-(pyridin-3-yl)-3,4-dihydropyrimidine monohydrate: two types of hydrogen-bonded sheet." Acta Crystallographica Section C Structural Chemistry 70, no. 11 (2014): 1011–16. http://dx.doi.org/10.1107/s2053229614021524.

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The structures of a chalcone and of its cyclocondensation product with guanidine are reported. In (2E)-3-(6-methoxynaphthalen-2-yl)-1-(pyridin-3-yl)prop-2-en-1-one, C19H15NO2, (I), the planes of the pyridine and naphthalene units make dihedral angles with that of the central spacer unit of 23.61 (13) and 23.57 (15)°, respectively, and a dihedral angle of 47.24 (9)° with each other. The molecules of (I) are linked into sheets by a combination of C—H...O and C—H...π(arene) hydrogen bonds. In the cyclocondensation product (4RS)-2-amino-4-(6-methoxynaphthalen-2-yl)-6-(pyridin-3-yl)-3,4-dihydropyri
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Gao, Zhong-Hua, Xiang-Yu Chen, Jin-Tang Cheng, Wei-Lin Liao та Song Ye. "N-Heterocyclic carbene-catalyzed [2+3] cyclocondensation of α-chloroaldehydes with azomethine imines". Chemical Communications 51, № 45 (2015): 9328–31. http://dx.doi.org/10.1039/c5cc01238d.

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The N-heterocyclic carbene-catalyzed enantioselective [2+3] cyclocondensation of α-chloroaldehydes with azomethine imines was developed to give the corresponding pyrazolidinones in good yields with excellent enantioselectivities.
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Reddy, Swetha, Srinivas Thadkapally, Mounika Mamidyala, Jagadeesh Babu Nanubolu, and Rajeev S. Menon. "A convenient synthesis of 2-substituted benzofurans from salicylaldehydes." RSC Advances 5, no. 11 (2015): 8199–204. http://dx.doi.org/10.1039/c4ra14948c.

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Base-mediated cyclocondensation of 2-hydroxybenzaldehydes with 3-bromo-1-(arylsulfonyl)propenes and 4-bromocrotonates afforded (E)-2-(2-sulfonylvinyl)benzofurans and (E)-2-benzofuranyl-3-acrylates, respectively.
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Pryadeina, M. V., A. B. Denisova, Ya V. Burgart, and V. I. Saloutin. "Regioselective cyclocondensation of ethyl 2-ethoxymethylidene-3-oxo-3-polyfluoroalkylpropionates with thiazolylhydrazines." Russian Journal of Organic Chemistry 44, no. 12 (2008): 1811–15. http://dx.doi.org/10.1134/s1070428008120166.

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Ullah, Mohammad Shahid, M. Giasuddin Ahmed, UKR Romman, Kawsari Akhter, S. Mosaddeq Ahmed, and Md Ershad Halim. "Synthesis Of 5, 7-Diaryl-1,5-Dihydro (Or 1, 2, 3, 5-Tetrahydro)- Pyrano[2, 3-D] Pyrimidin-2, 4-Diones (Or 2-Thioxo-4-Ones)." Journal of the Bangladesh Chemical Society 25, no. 2 (2013): 124–31. http://dx.doi.org/10.3329/jbcs.v25i2.15064.

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Some 5, 7-diaryl-1,5-dihydro (or 1, 2, 3, 5-tetrahydro)- pyrano[2, 3-d] pyrimidin-2, 4- diones (or 2-thioxo-4-ones) (3a-g) has been synthesized in one-step by the cyclocondensation of barbituric acid or thiobarbituric acid (1) with arylideneacetophenones (2a-d), in glacial acetic acid in the presence of phosphorous pentoxide. The structures of the compounds 3a-g were determined by their UV, IR, 1H NMR, 13C NMR, mass spectral data and elemental analyses. Journal of Bangladesh Chemical Society, Vol. 25(2), 124-131, 2012 DOI: http://dx.doi.org/10.3329/jbcs.v25i2.15064
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Maiboroda, E. I., and V. N. Britsun. "Cyclocondensation of N-aryl-3-oxobutanethioamides with 2-aminoimidazole and 2-aminobenzimidazole." Russian Journal of Organic Chemistry 44, no. 8 (2008): 1200–1204. http://dx.doi.org/10.1134/s1070428008080162.

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KAMIMURA, A., and A. KAKEHI. "ChemInform Abstract: Diastereoselective Cyclocondensation Reaction of 3-Formyl-2- isoxazolines." ChemInform 24, no. 14 (2010): no. http://dx.doi.org/10.1002/chin.199314082.

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Dissertations / Theses on the topic "Cyclocondensation [3+2]"

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Piovesan, Luciana Almeida. "Síntese de novos heterociclos a partir do ácido levulínico." Universidade Federal de Santa Maria, 2009. http://repositorio.ufsm.br/handle/1/4233.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>The synthesis of new compounds alkyl 3-azolyl propanoate e alkyl 3-azolyl propanoic acid structurally analogues to gamma-aminobutiric acid (GABA) is reported. One more time using the acetal acylation method, now the acetal derivative of 4-oxopentanoic acid (levulinic acid), the methyl 4,4- dimethoxypentanoate, were obtained the precursors methyl 7,7,7-trifluoro[chloro]-4- methoxy-6-oxo-heptenoates, 1,3-dieletrophilic precursor with alcanoate substituent. Are presented efficient and regioespecific synthetic routes from reactions o
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Book chapters on the topic "Cyclocondensation [3+2]"

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Bansal, R. K., and Neelima Gupta. "[3 + 2] Cyclocondensation." In Five-Membered Hetarenes with Three or More Heteroatoms. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-013-00969.

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Bansal, R. K., and Neelima Gupta. "By [3 + 2] Cyclocondensation." In Five-Membered Hetarenes with Three or More Heteroatoms. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-013-01079.

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Bansal, R. K., and Neelima Gupta. "[3 + 2] Cyclocondensation with (Chloromethyl)dichlorophosphine." In Five-Membered Hetarenes with Three or More Heteroatoms. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-013-01092.

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Bansal, R. K., and Neelima Gupta. "By [3 + 2] Cyclocondensation with (Chloromethyl)dichlorophosphine." In Five-Membered Hetarenes with Three or More Heteroatoms. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-013-01084.

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Bansal, R. K., and Neelima Gupta. "[3 + 2] Cyclocondensation of -Phosphino Imidates and Hydrazines." In Five-Membered Hetarenes with Three or More Heteroatoms. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-013-01171.

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