Výsledky vyhledávání - "ARMIN DE MEIJERE"

Akademický článek

Synthesis of benzannelated sultams by intramolecular Pd-catalyzed arylation of tertiary sulfonamides

Autor: Valentin A. Rassadin, Mirko Scholz, Anastasiia A. Klochkova, Armin de Meijere, Victor V. Sokolov

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 13, Iss 1, Pp 1932-1939 (2017)

A new and efficient approach to five- and six-membered benzannelated sultams by intramolecular C-arylation of tertiary 1-(methoxycarbonyl)methanesulfonamides under palladium catalysis is described. In case of the α-toluenesulfonamide derivative, an

Externí odkaz: https://doaj.org/article/32178f13ce2f48c081d2fbdc242f8e92

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Akademický článek

(2R,1'S,2'R)- and (2S,1'S,2'R)-3-[2-Mono(di,tri)fluoromethylcyclopropyl]alanines and their incorporation into hormaomycin analogues

Autor: Armin de Meijere, Sergei I. Kozhushkov, Dmitrii S. Yufit, Christian Grosse, Marcel Kaiser, Vitaly A. Raev

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 10, Iss 1, Pp 2844-2857 (2014)

Efficient and scalable syntheses of enantiomerically pure (2R,1'S,2'R)- and (2S,1'S,2'R)-3-[2-mono(di,tri)fluoromethylcyclopropyl]alanines 9a–c, as well as allo-D-threonine (4) and (2S,3R)-β-methylphenylalanine (3), using the Belokon' approach wit

Externí odkaz: https://doaj.org/article/d98067659fc24c0a80319c6d1efd5c99

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Akademický článek

Chemistry of polyhalogenated nitrobutadienes, 10: Synthesis of highly functionalized heterocycles with a rigid 6-amino-3-azabicyclo[3.1.0]hexane moiety

Autor: Viktor A. Zapol’skii, Jan C. Namyslo, Armin de Meijere, Dieter E. Kaufmann

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 8, Iss 1, Pp 621-628 (2012)

The nitropolychlorobutadienes 3, 4 are valuable building blocks for various amination and successive heterocyclization products. Nucleophilic substitution reactions of the partially protected, bioactive amines 1, 2 with either vinyl, imidoyl or carbo

Externí odkaz: https://doaj.org/article/341e21b703374a1a9e47a01677265526

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Akademický článek

Scalable synthesis of (1-cyclopropyl)cyclopropylamine hydrochloride

Autor: Sergei I. Kozhushkov, Alexander F. Khlebnikov, Rafael R. Kostikov, Dmitrii S. Yufit, Armin de Meijere

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 7, Iss 1, Pp 1003-1006 (2011)

1-Cyclopropylcyclopropanecarboxylic acid (2), which is accessible on a large scale (900 mmol) from 1-bromo-1-cyclopropylcyclopropane (1) in 64% yield (89% on a 12.4 mmol scale), has been subjected to a Curtius degradation employing the Weinstock prot

Externí odkaz: https://doaj.org/article/df94c7e388cf46ebafa0aae68f6b567e

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Akademický článek

Rh-Catalyzed rearrangement of vinylcyclopropane to 1,3-diene units attached to N-heterocycles

Autor: Franca M. Cordero, Carolina Vurchio, Stefano Cicchi, Armin de Meijere, Alberto Brandi

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 7, Iss 1, Pp 298-303 (2011)

Dienes embedded in quinolizidine and indolizidine structures can be prepared in four steps from cyclic nitrones and bicyclopropylidene. The key intermediates α-spirocyclopropanated N-heterocyclic ketones, generated via a domino 1,3-dipolar cycloaddi

Externí odkaz: https://doaj.org/article/4037813331c84387a0eee92f9ac40929

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Akademický článek

Effect of substituents on the 13C-NMR chemical shifts of 3-methylene-4-substituted-1,4-pentadienes. Part I.

Autor: IVAN O. JURANIC, ARMIN DE MEIJERE, GORDANA S. USCUMLIC, SERGEI I. KOZHUSHKOV, ZELJKO VITNIK, NATASA V. VALENTIC

Publikováno v: Journal of the Serbian Chemical Society, Vol 68, Iss 2, Pp 67-76 (2003)

The principles of linear free energy relationships were applied to the 13C substituent chemical shifts (SCS) of the carbon atoms in the unsaturated chain of 3-methylene-4-substituted-1,4-pentadienes. Correlations of the SCS with the substituent param

Externí odkaz: https://doaj.org/article/a30bd8edaad74bfcac41dc3f37a709d8

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