Results 61 to 70 of about 1,246 (202)
Synthesis of Azirinylammonium Salts via Alkylation of DABCO with 2-Halo-2H-azirines
MolbankTertiary (2H-azirin-2-yl)ammonium salts were prepared from methyl 2-halo-3-aryl-2H-azirine-2-carboxylates and 1,4-diazabicyclo[2.2.2]octane in very good to excellent yields. Both iodide and bromide salts are stable enough in crystalline form to be stored
Maksim A. Valiarovskii +3 more
doaj +1 more source
Late‐Stage Functionalization of Peptides on the Solid Phase
Angewandte Chemie International Edition, Volume 65, Issue 31, 27 July 2026.Peptide modifications are essential to control pharmacodynamic and pharmacokinetic properties of peptide drugs. Consequently, strategies that allow for efficient and rapid incorporation of non‐canonical modifications into peptides in parallel formats are highly sought after.
Marius Werner +2 more
wiley +1 more source
Employing Metadynamics to Predict the Membrane Partitioning of Carboxy-2H-Azirine Natural Products [PDF]
Natural products have diverse chemical structures and biological activities which often serve as sources of new therapeutic agents. Those containing a carboxy-2H-azirine moiety are an exciting target for investigation due in part to the broad-spectrum ...
Leah, Seebald, Emma, Wolk, Clyde, Daly
core +1 more source
Beiträge zur Koordinationschemie der Aziridine, 2H-Azirine und Phosphirane [PDF]
, 2008 This thesis contributes to the coordination chemistry of aziridines, 2H-azirines and P-mesitylphosphirane as ligands towards transition metals. The focus is set on transition metal halides and organometallic complexes of electron rich transition metals ...
Rödel, Nicolas
core +1 more source
2H-Pyrrole und Pyrrole aus 3-Phenyl-2H-azirinen
CHIMIA, 1976 Vinyl-phosphonium salts [2] and phenyl-vinyl-sulfone or divinylsulfone react with benzonitril-methylides a (which are photochemically generated from 3-phenyl-2H-azirines 1 and 2) to give, via the nonisolated intermediates of type b, 2H-pyrrole 4 and the
Ulrich Widmer +4 more
doaj +1 more source
Chemistry – A European Journal, Volume 32, Issue 28, 25 July 2026.Three 2‐phosphinophenylaluminum dichloride complexes were synthesized and characterized as novel intramolecular FLPs. These FLP systems exhibit high Lewis acidity and effectively activate challenging substrates including aliphatic ketones, imines, and esters. DFT analysis revealed that strain release and Al–P dynamics govern their reactivity. Abstract (
Yoshihiro Nishimoto +2 more
wiley +1 more source
Asymmetric Synthesis of 2H-Azirine 3-Carboxylates
, 2016 Dehydrochlorination of methyl 2-chloroaziridine 2-carboxylates generates the first examples of enantiopure 2-substituted 2H-azirine 3-carboxylates which undergo the aza Diels−Alder reaction with dienes to give bicyclic and tricyclic aziridines in good ...
Franklin A. Davis (2108398) +1 more
core +2 more sources
Journal of Physical Organic Chemistry, Volume 39, Issue 7, July 2026.Irradiation of 4‐azido‐2,6‐dichlorophenol in cryogenic matrices generates triplet 2,6‐dichloro‐4‐hydroxyphenylnitrene. Vibronically structured absorption enables extension of a formally forbidden transition into the visible region (up to 500 nm). Analyses based on NICS(1.7)zz, ACID, HOMA, MCI, and spin density reveal magnetically induced ring currents ...
Dharma Raj Joshi +5 more
wiley +1 more source
Azirines. III. The Preparation of Azirine Derivatives by the Base-Catalyzed Rearrangement of Quaternary Hydrazones [PDF]
Bulletin of the Chemical Society of Japan, 1968 Abstract An attempt to prepare azirines by the base-catalyzed rearrangement of some quaternary hydrazones gave the corresponding azirine derivatives. Namely, 2-phenyl-3-methylazirine was obtained by the treatment of propiophenone dimethylhydrazone methiodide with potassium t-butoxide, but treatment with sodium isopropoxide gave 2,5 ...
openaire +1 more source
European Journal of Organic Chemistry, Volume 29, Issue 23, 16 June 2026.1,1‐Disubstituted vinylbromides are key intermediates for constructing nitrogen‐containing heterocycles. This review provides an overview of the synthetic applications of 1,1‐disubstituted vinylbromides and summarizes recent developments in reaction methodologies, mechanistic insights, and the structural diversity of N‐heterocyclic compounds accessible
Anne Westermeyer +6 more
wiley +1 more source