Results 41 to 50 of about 5,623 (241)
Molecules, 2014 Diastereoselective reactions between 4-formylpyrazoles, N-substituted maleimides and glycine derivates led to new series of pyrazolyldipyrrolo [3,4-a:3',4'-f]pyrrolizines and pyrazolylpyrrolo[3,4-c]pyrroles in good yields.
Jairo Quiroga +6 more
doaj +1 more source
Asymmetric 1,3-dipolar cycloadditions of acrylamides [PDF]
, 2009 This critical review, which is relevant to researchers in synthetic organic chemistry, focuses on asymmetric 1,3-dipolar cycloadditions with acrylamides.
Kissane, Marie, Maguire, Anita R.
core +1 more source
Beilstein Journal of Organic Chemistry, 2019 Quinolinium salts, Q+-CH2-CO2Me Br− and Q+-CH2-CONMe2 Br− (where Q = quinoline), were prepared from quinolines. Deprotonation of these salts with triethylamine promoted the reaction of the resulting quinolinium ylides (formally azomethine ylides) with ...
Anthony Choi +2 more
doaj +1 more source
Coinage Metal Complexes as Chiral Catalysts for 1,3-Dipolar Cycloadditions [PDF]
, 2014 In this account, we describe the experience of our research group in the implementation of chiral coinage metal complexes into the efficient enantioselective 1,3-DC of azomethine ylides derived from α-amino acids and azlactones with different ...
Nájera, Carmen, Sansano, Jose M.
core +2 more sources
Molecules, 2020 The reaction of meso-tetrakis(pentafluorophenyl)porpholactone with azomethine ylides and nitrones affords pyrrolidine-fused and isoxazolidine-fused dihydroporpholactones that display, respectively, isobacteriochlorin- and chlorin-type UV–Vis spectra ...
Ana F. R. Cerqueira +5 more
doaj +1 more source
Thermodynamic Self Assembly of Two-Dimensional pi-Conjugated Metal-Porphyrin Covalent Organic Frameworks by On-Site Equilibrium Polymerization [PDF]
Journal of Nanoscience and Nanotechnology, Volume 14, Number 3,
March 2014 , pp. 2211-2216(6), 2013 Two dimensional pi conjugated metal porphyrin covalent organic frameworks were produced in aqueous solution on an iodine-modified Au(111) surface by on site azomethine coupling of Fe(III) 5,10,15,20 tetrakis(4 aminophenyl)porphyrin (FeTAPP) with terephthal dicarboxaldehyde and investigated in detail using in-situ scanning tunneling microscopy.
arxiv +1 more source
Benzotriazolylmethylaminosilanes: Novel azomethine ylide equivalents
Tetrahedron, 1994 AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, FL 32611-7200 USA ( host institution ) +3 more
openaire +4 more sources
SynOpen, 2017 A variety of sugar-fused chromanono pyrrolidines/pyrrolizidines/thiolizidines have been synthesized by intermolecular 1,3-dipolar cycloaddition reaction of azomethine ylides (generated from glucose aldehyde and different secondary amino acids) with ...
Sirisha Nallamala +2 more
doaj +1 more source
Enantioselective dearomative [3 + 2] cycloadditions of indoles with azomethine ylides derived from alanine imino esters [PDF]
, 2016 Catalytic, enantioselective [3 + 2] cycloadditions of azomethine ylides derived from alanine imino esters with 3-nitroindoles are reported. The dearomative cycloaddition reactions occur in the presence of a catalyst generated in situfrom Cu(OTf)2 and (R)-
Gerten, Anthony +2 more
core +3 more sources
Pyrrolidine and Direct Covalent Linkage Recognition, and Multiple-Photo Response [PDF]
, 2023 The work was supported through projects UIDB/50006/2020 and UIDP/50006/2020, funded by FCT/MCTES, through national funds. S.L.H.R. (Refs. REQUIMTE/EEC2018/30) and A.M.G.S. thank FCT (Fundação para a Ciência e Tecnologia) for funding through program DL 57/
Freire, Cristina +5 more
core +1 more source