Results 141 to 150 of about 1,246 (202)
Molecular oxygen-enabled photocatalyzed oxygenative coupling <i>via</i> C-H functionalization: advances and mechanistic insights. [PDF]
RSC AdvKushwaha AK, Kumari P, Singh S.
europepmc +1 more source
Biosynthesis of Peptidic Thiooxazole Metallophores Installed by Multinuclear Nonheme Iron Enzymes. [PDF]
ACS Chem BiolGadgil MG +5 more
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The “Azirine/Oxazolone Method” under Solid-Phase Conditions
European Journal of Organic Chemistry, 2004 Aib-containing peptides have been synthesized from the N- to the C-terminus by the ‘‘azirine/oxazolone method’’ under solid-phase conditions. In this new and convenient method for the synthesis of sterically demanding peptides on solid phase, 2H-azirine ...
Heinz Heimgartner
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Carbamoyl Anion Addition to Azirines
Organic Letters, 2021The addition of carbamoyl anions to azirines affords synthetically useful 2-aziridinyl amide building blocks. The reaction scope was explored with respect to both formamide and azirine, and the addition was found to be highly diastereoselective. A one-pot conversion of a ketoxime to an aziridinyl amide was demonstrated.
Michael J. Kerner +9 more
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Journal of Peptide Science, 2003 The protected 11 amino acid segment (6–16) of the peptaibol zervamicin II-2 was synthesized by using the ‘azirine/oxazolone method’ for the introduction of all Aib residues.
Heinz Heimgartner
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2H-Azirines in medicinal chemistry
Chemistry of Heterocyclic Compounds, 2021The review presents an analysis of studies published in the period 1971–2020 devoted to examination of the biological activity of natural and synthetic 2H-azirine derivatives, their use for bioconjugation, as well as search for some new synthetic methods of structural modification of azirines with the aim of improving their biological activity.
Pavel А. Sakharov +2 more
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Azirine-Based Synthesis of Alkynylpyrroles
The Journal of Organic ChemistryA two-step method for the preparation of β-ethynylpyrroles from azirinyl ethynyl ketones by Wittig olefination, followed by FeCl2-catalyzed isomerization, has been developed. Azirines with various substitution patterns of the ring and the triple bond tolerate the reaction conditions of both steps, providing di-, tri-, and tetra-C-substituted β ...
Artur E. Taishev +3 more
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Stereoselective Allylation of Azirines with Allylindium Reagents.
ChemInform, 2006AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Tsunehisa Hirashita +4 more
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ChemInform Abstract: AZIRINE PHOTOCHEMISTRY, CYCLIZATION OF 2‐STYRYL‐2H‐AZIRINES TO BENZAZEPINES
Chemischer Informationsdienst, 1974AbstractDie Photolyse der isomeren Phenyl‐styryl‐azirine (I) führt zum Benzazepin (II), dessen Struktur durch Addition von Acetylendicarbonsäureester (III) zum Additionsprodukt (IV) bestätigt wird.
A. PADWA, J. SMOLANOFF
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Organic Letters, 2013
A variety of enaminones and enamine carboxylic esters were converted to trifluoroethoxylated 2H-azirines through reactions with PhIO in trifluoroethanol (TFE). The cascade reaction is postulated to proceed via a PhIO-mediated oxidative trifluoroethoxylation and a subsequent azirination of the α-trifluoroethoxylated enamine intermediates.
Xiaoqian, Sun +4 more
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A variety of enaminones and enamine carboxylic esters were converted to trifluoroethoxylated 2H-azirines through reactions with PhIO in trifluoroethanol (TFE). The cascade reaction is postulated to proceed via a PhIO-mediated oxidative trifluoroethoxylation and a subsequent azirination of the α-trifluoroethoxylated enamine intermediates.
Xiaoqian, Sun +4 more
openaire +2 more sources