Results 61 to 70 of about 1,229 (176)
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
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
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
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
The chemistry of enaminones, diazocarbonyls and small rings: our contribution
Journal of the Brazilian Chemical Society, 2003 After thirty two years in Brazil and retired from Universidade Estadual de Campinas the author wishes to present this account, a summary of a large part of the research in synthetic methodology developed by the research groups of Albert J.
Kascheres Concetta Montanile
doaj
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
Push–Pull Ynamines and Push–Pull Ynamides: Synthesis, Structure, Reactivity, and Application
European Journal of Organic Chemistry, Volume 29, Issue 19, 22 May 2026.Push–pull ynamines and push–pull ynamides, which carry an EWG and an amino or amido group as EDG, are highly interesting classes of EDG‐EWG alkynes that have been intensively studied due to their exceptional reactivity. In this review, the synthesis, structure, reactivity, and application of push–pull ynamines, push–pull ynecarbamates, push–pull ...
Hans‐Joachim Gais
wiley +1 more source
Journal of Physical Organic Chemistry, Volume 39, Issue 4, April 2026.New calculations have been applied to the pyrolysis of pyrrole under shock‐tube conditions and to the radical‐radical reaction between allyl and •CN at low temperature and pressure, using the same mechanistic scheme for both. ABSTRACT The pyrolysis of pyrrole has previously been studied in shock‐tube experiments and in jet‐stirred reactors. The results
Barry K. Carpenter
wiley +1 more source
Azirinium ylides from alkoxycarbonylcarbenoids and 2H-azirines: Generation and transformations
, 2006 Dirhodium tetraacetate-catalyzed decomposition of diazo esters in the presence of 3-aryl-2H-azirines having no substituent in the 2-position gives rise to azirinium ylides which then undergo isomerization into 2-azabuta-1,3-diene derivatives or (in the ...
Magull, Joerg +5 more
core +1 more source
Recent Contributions of Organic Synthesis to Forensic Science
ChemPlusChem, Volume 91, Issue 2, February 2026.Forensic science is a multidisciplinary field that plays a vital role in providing scientific evidence for criminal investigations. This review highlights advances and opportunities at the interface between organic synthesis and forensic science, with applications in drug identification, forensic toxicology, and latent fingerprint detection and ...
Gustavo dos Santos Martins +3 more
wiley +1 more source