[3 + 2]-Cycloadditions of nitrile ylides after photoactivation of vinyl azides under flow conditions
Beilstein Journal of Organic Chemistry, 2013 The photodenitrogenation of vinyl azides to 2H-azirines by using a photoflow reactor is reported and compared with thermal formation of 2H-azirines. Photochemically, the ring of the 2H-azirines was opened to yield the nitrile ylides, which underwent a [3
Stephan Cludius-Brandt +2 more
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Optically active aziridine esters by nucleophilic addition of nitrogen heterocycles to a chiral 2H-azirine-2-carboxylic ester [PDF]
, 2003 Chiral enriched ethyl 3-methyl-2H-azirine-2-carboxylate acts as an efficient alkylating agent for a variety of five membered aromatic nitrogen heterocycles.Fundação para a Ciência e Tecnologia - POCTI/32723/QUI/2000 ...
Alves, M. José +2 more
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Bortrifluorid-katalysierte Umsetzung von 2H-Azirinen und Vinylaziden mit Nitrilen
CHIMIA, 1975 The reaction of 2H-azirines or vinyl azides with nitriles in the presence of boron trifluoride etherate, to yield the corresponding imidazoles (see table), is described.
Heinz Bader, Hans-Jürgen Hansen
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Cycloaddition of methyl 2-(2,6-dichorophenyl)-2H-azirine-3-carboxylate to electron rich 2-azadienes [PDF]
, 2003 Tert-Butyldimethylsililoxy-2-aza-1,3-butadienes react with 2H-azirine 3 leading to Diels-Alder cycloadducts in moderate yields. The reactions are endo- and regio- selective with the azirine being added by its less hindered face. There is only one product
Alves, M. José +2 more
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Design and Synthesis of Stereogenic-at-Iron Complexes with Multidentate Ligands and Application in Asymmetric Catalysis [PDF]
, 2023 Asymmetric catalysis is an indispensable tool of great importance for the economic and sustainable synthesis of non-racemic chiral molecules. In addition to organic compounds and biomolecules, chiral transition metal complexes represent a pivotal pillar ...
Steinlandt, Philipp Stefan
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Stereoselective cycloaddition of 1-glucosyl-1,3-butadienes with tert-butyl 2H-azirine-3-carboxylate, glyoxylates and imines [PDF]
, 2003 Glucosyl dienes 1 have been reacted with the achiral 2H-azirine 4 and with glyoxylates, forming fused structures of type 5 and disaccharide-like compounds 7 with good to excellent selectivity.
Almeida, I. G. +3 more
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Einfluss elektronischer Faktoren auf die katalytische Aktivität von chiral-at-metal Ruthenium Komplexen [PDF]
, 2023 Transition metal complexes with metal centered chirality, also called chiral-at-metal complexes, provide a useful and expandable toolbox for asymmetric catalysis. This thesis focuses on the synthesis of chiralat- metal ruthenium complexes with previously
Winterling, Erik
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Ethyl 2-(Diisopropoxyphosphoryl)-2H-Azirine-3-Carboxylate: Reactions with Activated 1,3-Butadienes [PDF]
, 2008 The 12th International Electronic Conference on Synthetic Organic Chemistry session General Organic SynthesisEthyl 2-(diisopropoxyphosphoryl)-2H-azirine-3-carboxylate was generated “in situ” and reacted with a number of 1,3-butadienes.
Alves, M. José +3 more
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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
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Pyridonderivate aus 3-Amino-2H-azirinen und Cyclopropenonen
CHIMIA, 1978 Reaction of the 3-dimethylamino-2H-azirines 1a and 1b with diphenylcyclopropenone (2a) in ether or acetonitrile leads to the 2-dimethylamino-5,6-diphenyl-4(3H)-pyridones 3a and 3b in 70 and 80% yield, respectively. The structure of these 1:1-adducts has
Stanislav Chaloupka, Heinz Heimgartner
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