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

open access: bronzeTetrahedron, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Teresa M V D Pinho E Melo
exaly   +5 more sources

3-Amino-2H-azirine, Moleküle mit vielfältigen Reaktionsmöglichkeiten

open access: diamondCHIMIA, 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   +5 more sources

2H-Azirines as dipolarophiles [PDF]

open access: bronzeTetrahedron Letters, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Teresa M. V. D. Pinho e Melo   +3 more
openalex   +4 more sources

Synthesis of New 2-Halo-2-(1H-tetrazol-5-yl)-2H-azirines via a Non-Classical Wittig Reaction [PDF]

open access: goldMolecules, 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   +2 more sources

Synthesis of 2H-azirine-2,2-dicarboxylic acids and their derivatives [PDF]

open access: yesBeilstein Journal of Organic Chemistry
Methods for the preparation of 3-aryl-2H-azirine-2,2-dicarboxylic acids and their amides, esters, and azides by FeCl2-catalyzed isomerization of 3-aryl-5-chloroisoxazole-4-carbonyl chlorides into 3-aryl-2H-azirine-2,2-dicarbonyl dichlorides followed by ...
Anastasiya V. Agafonova   +2 more
doaj   +2 more sources

Addition and Cycloaddition Reactions of Phosphinyl- and Phosphonyl-2H-Azirines, Nitrosoalkenes and Azoalkenes [PDF]

open access: goldMolecules, 2009
An overview of the use of 2H-azirines, conjugated nitrosoalkenes and conjugated azoalkenes bearing phosphorus substituents in addition and cycloaddition reactions is presented, focused on strategies for the synthesis of aminophosphonate and ...
Américo Lemos
doaj   +2 more sources

3-Aryl-2H-azirines as annulation reagents in the Ni(II)-catalyzed synthesis of 1H-benzo[4,5]thieno[3,2-b]pyrroles [PDF]

open access: yesBeilstein Journal of Organic Chemistry
A high-yielding method for the synthesis of 3-arylbenzo[4,5]thieno[3,2-b]pyrroles has been developed via pyrrole ring annulation to the aromatic benzo[b]thiophene system, using 3-arylazirines as a N‒C=C synthon.
Julia I. Pavlenko   +5 more
doaj   +2 more sources

2H-Azirines as electrophiles

open access: green, 2010
2H-Azirines have shown an unusual potential to synthesise aziridines and other types of compounds. Many functionalized aziridines can be produced by addition of O-, S-,N-, C-nucleophiles and hydride to 2H-azirines. This review is designed to give an overview of the reactivity of 2H-azirines as electrophiles along the years and their usefulness in the ...
M. José Alves, F. Teixeira Costa
openalex   +4 more sources

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