Results 81 to 90 of about 1,246 (202)
Diels–alder reactions of alkyl 2H-azirine-3-carboxylates with furans [PDF]
, 2001 Methyl 2-(2,6-dichlorophenyl)-2H-azirine-3-carboxylate 1 and furan give the aziridine 2 by a Diels–Alder cycloaddition reaction. The hydrolysis of compound 2 leads to a dihydrofuranol 11 by cleavage of a C–N bond.
Azóia, Nuno G. +5 more
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, 2020 A method for the preparation of 5-aminobutenolides from 2-bromo-2H-azirine-2-carboxylic esters/amides with arylacetic acids has been developed. The reaction regioselectivity can be switched by a change of the basic catalyst, making it possible to prepare
Pavel A. Sakharov (5519120) +3 more
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Asymmetric radical additions of trialkylboranes to 2H-azirine-3-carboxylates
, 2004 Asymmetric additions of alkyl radicals, generated from R3B, to chiral 2H-azirine-3-carboxylates offer a new entry to enantio-enriched aziridines, and proceed with high diastereoselectivity when using 8-phenylmenthol as chiral auxiliary.
Fischer, Andreas, +2 more
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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 +5 more
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NoAnti-angiogenic therapy has long been used as an adjunct therapy for the resolution of tumor burden. The current findings describe the synthesis of novel marine-based azirine-containing compounds that exhibit anti-angiogenic mediated anti-tumor ...
Singh, A. +9 more
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The reaction between 2,3-Diphenyl-2H-azirine and Phenyldiazomethane
, 1973 The reaction between 2,3-diphenyl-2H-azirine and phenyldiazomethane produces the stable 1-azido-1,2,3-triphenylprop-1-ene in good yield. The structure is confirmed by an alternative synthesis which indicates that the double bond has the E-configuration.
AD Ward, B Nussey, JH Bowie
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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 +5 more
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, 2011 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 ...
Alves, M. José, Costa, Flora Teixeira e
openaire +1 more source
A Review on the Photochemistry of 2H-Azirines [PDF]
HETEROCYCLES, 1977 Gilgen, Paul +3 more
openaire +2 more sources
, 2005 The asymmetric addition of alkyl radicals to (IR,2S,5R)-2-(l-methyl-l-phenylethyl)-5-methylcyclohexyl-2H-azirine-3-carboxylate (1) yielding the corresponding 2-alkylaziridine-2-carboxylates has been investigated.
Fischer, A., Somfai, Peter,, Risberg, E.
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