Results 11 to 20 of about 1,246 (202)

Characterization of Azirine and Its Structural Isomers

open access: yesThe Journal of Physical Chemistry A, 2018
The structures and spectroscopic properties of azirine (C2H3N), a nitrogen-containing three-membered cyclic molecule, and its isomers were studied with state-of-the-art ab initio quantum chemical methods.
Partha P. Bera (1337376)   +5 more
core   +3 more sources

A Novel Class of "Super-Strained" Spiro Heterocycles: Gateway to 1-Azaspiro[3.3]heptane Derivatives, and Biological Validation. [PDF]

open access: yesAngew Chem Int Ed Engl
A new class of “super‐strained” spiro heterocycles—spirocyclic 1‐azabicyclo[1.1.0]butanes—was synthesized via insertion of cyclobutane‐, oxetane‐, and azetidine‐containing sulfonium reagents into substituted azirines. The stability of this new class of compounds was studied.
Natho P   +9 more
europepmc   +3 more sources

<i>Hj</i>-aggregates of quinoline-fused boron-dipyrromethene nanoparticles for near-infrared dualmodal photodynamic and photothermal therapy. [PDF]

open access: yesSmart Mol
A novel quinoline‐fused cyclic pyrrole is synthesized via lithium diisopropylamide‐catalyzed [3 + 2] cyclization, enabling the construction of a symmetrical boron‐dipyrromethene photosensitizer that forms Hj‐aggregates upon nanoparticle encapsulation.
Zhang B   +6 more
europepmc   +2 more sources

A Chemical Framework for Engineering Extracellular Vesicles' Biointerface to Advance Precision Therapeutics. [PDF]

open access: yesAdv Mater
Extracellular vesicles (EVs) are cell‐derived nanoparticles that mediate intercellular communication through their dynamic biointerfaces. Owing to their intrinsic biological functions, EVs have emerged as promising platforms for biomedical applications.
Pourtalebi Jahromi L   +3 more
europepmc   +2 more sources

2H-Azirines as dipolarophiles [PDF]

open access: yesTetrahedron Letters, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Melo, Teresa M. V. D. Pinho e   +3 more
openaire   +2 more sources

Synthesen und Reaktionen neuer Brückenkopf-Azirine [PDF]

open access: yes, 2009
In der vorliegenden Arbeit wird die Darstellung einer Vielzahl neuer, hochreaktiver Brückenkopf-Azirine dokumentiert. Diese können ausschließlich photochemisch aus den entsprechenden, zum Teil ebenfalls unbekannten carbocyclischen Vinylaziden erzeugt ...
Penk, Enrico
core   +3 more sources

Structure, spectroscopic signatures, and formation of hydroxy-azirine: a potential interstellar prebiotic molecule [PDF]

open access: yes, 2023
Producción CientíficaHydroxy-azirine (C2H3NO) is a -OH derivative of azirine (C2H3N), molecule that has been the subject of several unfruitful searches in space.
Barrientos Benito, María Carmen   +7 more
core   +1 more source

Photochemische Cycloaddition von 3-Phenyl-2H-azirinen mit Ketenen

open access: yesCHIMIA, 1972
Irradiation of 2,2-dimethyl-3-phenyl- (1c) and 2,3-diphenyl-2H-azirine (1d) in benzene solution in the presence of ketene (5) yields 2,2-dimethyl-4-phenyl- (6) and 2,4-diphenyl-5-methylen-3-oxazoline (7), respectively. Similar cycloadducts (9a to d) are
H. Heimgartner   +6 more
doaj   +1 more source

Reactivity of 2-halo-2H-azirines. Part 3: Dehalogenation of 2-halo-2H-azirine-2-carboxylates [PDF]

open access: yes, 2003
The dehalogenation of 2-halo-3-phenyl-2H-azirine-2-carboxylates is described. Using sodium borohydride and tributyltin hydride 3-phenyl-2H-azirine-2-carboxylates were obtained in moderate yields.
Teresa M. V. D. Pinho e Melo   +6 more
core   +1 more source

Access to highly substituted oxazoles by the reaction of α-azidochalcone with potassium thiocyanate

open access: yesBeilstein Journal of Organic Chemistry, 2020
The reactivity of α-azidochalcones has been explored for the preparation of highly substituted oxazoles via a 2H-azirine intermediate. The azidochalcones, when treated with potassium thiocyanate in the presence of potassium persulfate, lead to 2,4,5 ...
Mysore Bhyrappa Harisha   +4 more
doaj   +1 more source

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