Results 121 to 130 of about 25,436 (256)
European Journal of Organic Chemistry, Volume 27, Issue 44, November 25, 2024.1,2‐Diaza‐1,3‐butadienes, also called azoalkenes, have received considerable attention as key synthons for constructing various heterocyclic scaffolds. This minireview summarizes the contribution of our group in this field over the period from 2009 to the present, focusing on the role of the azoene building block in forming the heterocyclic structures.
Lucia De Crescentini +4 more
wiley +1 more source
Advanced Synthesis &Catalysis, Volume 366, Issue 21, Page 4441-4451, November 5, 2024.Abstract We report sequential wavelength‐selective photochemical transformations of 1‐alkenylpyrazolo[1,2‐a]pyrazolones to pyrazolo[1,2‐a][1,2]diazepines or cyclobuta[c]pyrazolo[1,2‐a]pyrazolones. Irradiation of 1‐alkenylpyrazolo[1,2‐a]pyrazolones with visible‐light (blue LED, 457 nm) induced selective ‘ring switching’ transformation into pyrazolo[1,2 ...
Ines Kulašić +5 more
wiley +1 more source
Amino Acid Degradations Produced by Lipid Oxidation Products [PDF]
, 2017 Differently to amino acid degradations produced by carbohydrate-derived reactive carbonyls, amino acid degradations produced by lipid oxidation products are lesser known in spite of being lipid oxidation a major source of reactive carbonyls in food. This
Hidalgo, Francisco J., Zamora, Rosario
core +1 more source
Phosphoramidite-Cu(OTf)2 complexes as chiral catalysts for 1,3-dipolar cycloaddition of iminoesters and nitroalkenes [PDF]
, 2013 Chiral complexes formed by phosphoramidites such as (Sa,R,R)-9 and Cu(OTf)2 are excellent catalysts for the general 1,3-dipolar cycloaddition between azomethine ylides and nitroalkenes affording the corresponding tetrasubstituted proline esters mainly as
Castelló Moncayo, Luis Miguel +5 more
core +2 more sources
Beilstein Journal of Organic Chemistry, 2014 The regioselective three-component condensation of azomethine ylides derived from isatins and α-amino acids with acrylamides or aroylacrylic acids as dipolarophiles has been realized through a one-pot 1,3-dipolar cycloaddition protocol.
Tatyana L. Pavlovskaya +6 more
doaj +1 more source
Molecules, 2010 The synthesis of a small library of dihydrouracils spiro-fused to pyrrolidines is described. These compounds are synthesized from b-aryl pyrrolidines, providing products with the 2-arylethyl amine moiety, a structural feature often encountered in ...
Daniel Blanco-Ania +5 more
doaj +1 more source
Synthesis of the tetracyclic core of daphnilactone B-type and yuzurimine-type alkaloid [PDF]
, 2011 : The core of daphnilactone B-type and yuzurimine-type alkaloids was synthesized in only 16 steps from a known β-allyl-γ-butyrolactone. The key sequence of Vilsmeier–Haack cyclization and intramolecular azomethine ylide cycloaddition allowed the ...
Boudreault, Jonathan +2 more
core +1 more source
Binap-silver-catalyzed enantioselective multicomponent 1,3-dipolar cycloaddition of azomethines ylides derived from ethyl glyoxylate [PDF]
, 2015 The enantioselective binap–silver catalyzed multicomponent 1,3-dipolar cycloaddition using ethyl glyoxylate, phenylalanine ethyl ester, and maleimides is described. The employment of basic silver carbonate allows the reaction to take place in the absence
Mancebo Aracil, Juan +2 more
core +2 more sources
One pot synthesis of pyrrolidines type 3,7-diazabicyclo [3.3.0] octane and biological activity [PDF]
, 2008 Pyrrolidines type 2,4-disubstituted (alkyl, aryl or heteroaryl)-6,8-dioxo-3,7-diazabicyclo [3.3.0] octanes (8a-d) were successfully synthesized by an efficient one pot 1,3-dipolar cycloaddition of azomethine ylides (in situ generated from the reaction of
Amornraksa, Kitti +2 more
core
Addition of azomethine ylides to carbon-encapsulated iron nanoparticles
Dalton Transactions, 2018 Carbon-encapsulated iron nanoparticles have been covalently functionalized using the Prato reaction.
Artur Kasprzak +6 more
openaire +4 more sources