Results 41 to 50 of about 1,246 (202)
3-Amino-2H-azirine, Moleküle mit vielfältigen Reaktionsmöglichkeiten
CHIMIA, 1979 3-Amino-2H-azirines, cyclic three-membered amidines with an estimated ring strain of about 200 kJ/mole, undergo a variety of reactions. Thereby, each of the azirine bonds can be broken: Thermolysis leads to the rupture of the C(2),C(3)-bond, with strong
Heinz Heimgartner
doaj +1 more source
Reaktionen von 3-Dimethylamino-2,2-dimethyl-2H-azirin mit aromatischen Carbonsäurehydraziden
CHIMIA, 1978 Reaction of 3-dimethylamino-2,2-dimethyl-2H-azirine (1) with salicylic acid hydrazide (2c) in acetonitrile at room temperature gives the amidrazone 3c as a primary product in 78% yield. Cyclization of 3c in methanol leads to the 1,2,5,6-tetrahydro-1,2,4-
Stanislav Chaloupka, Heinz Heimgartner
doaj +1 more source
Oxaziridines: Versatile Reagents in Modern Organic Synthesis
The Chemical Record, EarlyView.Being capable of transferring an O atom and N‐group/atom, oxaziridines are considered multitasking agents. These are employed for diverse organic transformations, such as epoxidation of olefins, α‐ and γ‐hydroxylation/amination of carbonyl compounds, oxidation of sulfides, [3+2]cycloaddition with unsaturated systems.
Ajeet Chandra +2 more
wiley +1 more source
Synthesis of New 2-Halo-2-(1H-tetrazol-5-yl)-2H-azirines via a Non-Classical Wittig Reaction
Molecules, 2015 The synthesis and reactivity of tetrazol-5-yl-phosphorus ylides towards N-halosuccinimide/TMSN3 reagent systems was explored, opening the way to new haloazidoalkenes bearing a tetrazol-5-yl substituent.
Ana L. Cardoso +4 more
doaj +1 more source
Advanced Synthesis &Catalysis, Volume 368, Issue 21, 3 November 2026.Thiolane sulfoximines provide practical and safer surrogates for hazardous azides in nitrene photochemistry, enabling direct access to 7,8‐diaminoquinolines and fused δ‐lactams. DFT calculations support the reaction mechanism and rationalize product selectivity.
Lorenzo Serusi +5 more
wiley +1 more source
, 2022 text学術雑誌論文 / Journal ArticleA 1,4,2-diazaborole-type heterocycle was obtained via addition of [(alkylamino)methyl]-trifluoroborate to 2H-azirine-2-carboxylate. The molecular structure of the product was confirmed by X-ray crystallography.
タカハシ, ヒロト +9 more
core +1 more source
Light-induced synthesis of 2H-azirines and its applications in organic chemistry
Journal of Saudi Chemical Society2H-azirines have represented versatile building motifs in the domain of organic chemistry owing to their excellent reaction activity induced by the high strain of the three-membered ring species.
Shibo Lin +4 more
doaj +1 more source
Chemistry – A European Journal, Volume 32, Issue 39, 22 October 2026.Hybrid macrocyclic peptides unite genetically encoded peptide libraries with the structural complexity of synthetic small molecules. This Review critically analyzes phage‐compatible cyclization and diversification chemistries, highlights emerging opportunities beyond traditional cysteine‐based approaches, and outlines how future advances may enable the
Titia Rixt Oppewal, Clemens Mayer
wiley +1 more source
Enantioselective addition of organolithium reagents to a 2H-azirine
, 2002 3-(2-Naphthyl)-2H-azirine was used as a model substrate in the first enantioselective addition of organolithium reagents to an azirine. Various organolithium reagents have been used together with different chiral ligands.
Somfai, Peter,, Risberg, E.
core +1 more source
Chiral Pyrazolinylidene Complexes for Asymmetric Catalysis
Chemistry – A European Journal, Volume 32, Issue 39, 22 October 2026.The synthesis and application of pyrazolin‐5‐ylidene NHC chiral‐at‐ruthenium catalysts is reported. The strong donating pyrazolin‐5‐ylidene ligands led to highly electron rich ruthenium complexes, which showed excellent catalytic activity and enantioselectivity in the intramolecular aziridination of an alkene.
Felix Möller +6 more
wiley +1 more source