1 : 3 Dipolar Cycloaddition of Benzonitrile Oxide on to Cinnamyl Arylamines [PDF]
, 1971 1:3 Dipolar Cycloaddition of Benzonitrile Oxide on to Cinnamyl Arylamines.
Mohan, Suresh +2 more
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Synthesis of Spiroisoxazolines by 1,3-Dipolar Cycloaddition [PDF]
Molecules, 1997 The cycloaddition of the chiral nitrile oxide 1 to 1-R-substituted 3,3-methylene-5,5-dimethyl-2-pyrrolidinones 2 (where R is H, n-butyl-, 1,1-dimethylethoxycarbonyl-, 1-methylethenyl- and acetyl-) proceeds regioselectively under the formation of ...
Peter Ertl +3 more
doaj +2 more sources
Organocatalyzed Enantio- and Diastereoselective Domino [3+2]-Dipolar Cycloaddition: Synthesis of Chiral Pyrrorlo-thiazine-2-carbaldehydes and Dihydropyrrole-3-carbaldehydes [PDF]
, 2023 1,3-Dipolar cycloaddition of azomethine ylide and dipolarophile is an efficient method to construct N, S heterocycles such as thiazoles, 1,4-thiazines, and their chiral polyhydro derivatives.
Venkata Surya Kumar , Choutipalli +3 more
core +1 more source
1,3 dipolar cycloaddition of münchnones: Factors behind the regio-selectivity [PDF]
, 2022 The 1,3 dipolar cycloaddition reactions of münchnones and alkenes provide an expedite synthetic way to substituted pyrroles, an exceedingly important structural motif in the pharmaceutical and material science fields of research.
Juan J., González Armesto +3 more
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Synthesis of 1,4-Disubstituted Mono and Bis-triazolocarbo-acyclonucleoside Analogues of 9-(4-Hydroxybutyl)guanine by Cu(I)-Catalyzed Click Azide-Alkyne Cycloaddition [PDF]
, 2011 A series of novel mono-1,2,3-triazole and bis-1,2,3-triazole acyclonucleoside analogues of 9-(4-hydroxybutyl)guanine was prepared via copper(I)-catalyzed 1,3-dipolar cycloaddition of N-9 propargylpurine, N-1-propargylpyrimidines/as-triazine with the ...
Krim, Jamal +5 more
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1,2,4-Oxadiazoles from cycloreversions of oxadiazabicyclo[3.2.0]heptenes: 1-azetines as thiocyanate equivalents [PDF]
, 2013 1,3-Dipolar cycloaddition of nitrile oxides to 4-aryl-2-alkylthio-1-azetines gave a series of oxadiazabicyclo[3.2.0]heptenes as single diastereoisomers. Heating these cycloadducts in toluene resulted in an overall [2+2]-cycloreversion to give 5-alkylthio-
Khan, Musharraf +5 more
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Synthesis of Pyrrolo(spiro-[2.3′]-oxindole)-spiro-[4.3″]-oxindole via 1,3-Dipolar Cycloaddition of Azomethine Ylides with 3‑Acetonylideneoxindole [PDF]
, 2016 A series of novel dispirooxindole derivatives, 3-acetyl-5-phenyl-pyrrolo(spiro-[2.3′]-1′-benzyl-oxindole)-spiro-[4.3″]-1″-benzyl-oxindoles, were synthesized via 1,3-dipolar cycloaddition of the azomethine ylide with 3-acetonylideneoxindole in high ...
Ji-Wei Ren (1883176) +5 more
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Kinetic solvent effects on 1,3-dipolar cycloadditions of benzonitrile oxide [PDF]
, 2005 The kinetics of 1,3-dipolar cycloadditions of benzonitrile oxide with a series of N-substituted maleimides and with cyclopentene are reported for water, a wide range of organic solvents and binary solvent mixtures.
Jan B. F. N. Engberts +5 more
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A Stepwise [4 + 3] Cycloaddition Reaction of the 1,3-Diphenyl-2-azaallyl Anion [PDF]
, 1993 The 1,3-diphenyl-2-azaallyl anion (1) undergoes [3 + 2] cycloaddition reactions with the s-cis-fixed 1,3-dienes 8-11. In contrast, 1,1,2,2,3,3-hexamethyl-4,5-bis(methylene)cyclopentane (7) reacts with 1 to give the [4 + 3] cycloadduct 13 and the linear 1,
Mayr, Herbert +2 more
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1, 3-Dipolar Cycloadditions. LXXVI. Cycloadditions of Diazomethane to Substituted Butadienes
Chemical and Pharmaceutical Bulletin, 1975 1-Substituted butadienes (R=CH2, CH3, O, C3H5, CO2CH3, CN) and 2-phenylbutadiene accept diazomethane at the 3, 4-bond yielding 3-vinylpyrazoline derivatives. Tautomerization of the 1-to 2-pyrazolines takes place either at room temperature (R=CO2CH3, CN), on heating (R=C6H5) or on acid catalysis (R=H, CH3, OCH3) ; the 2-pyrazolines are characterized as ...
HUISGEN, ROLF +2 more
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