Results 231 to 240 of about 25,436 (256)

Ring enlargement reaction of C,N-cyclic-N'-acyl azomethine imines with sulfonium ylide: an efficient synthesis of 3-benzazepine derivatives.

Organic Letters, 2014
Highly efficient formation of 3-benzazepine derivatives has been achieved, based on the ring expansion reaction of C,N-cyclic-N'-acyl azomethine imines with sulfonium ylide generated in situ from the corresponding sulfonium salt.
T. Soeta, T. Ohgai, Takahiro Sakai, S. Fujinami, Y. Ukaji   +4 more
semanticscholar   +1 more source

ChemInform Abstract: Intramolecular Cycloadditions with Azomethine Ylides for the Synthesis of Metacyclophanes.

ChemInform, 1986
Abstract3‐Hydroxy‐benzaldehyde (I) is converted to the cinnamic ester (II) which is then brominated, yielding (III).
I. Heinze, Hans Fritz, P. Link, Wolfgang Eberbach, P. von Laer   +4 more
openaire   +3 more sources

Regioselective synthesis of novel dispiropyrrolidine and dispiropyrrolizidine oxindole derivatives via azomethine ylide specific [3+2]-cycloaddition

, 2014
Structurally complex spiro analogues of indenoquinoxaline have been synthesized via the cycloaddition reaction of azomethine ylides with alkyl indeno[2,1-b]quinoxalin-11-ylidene acetate dipolarophiles in a highly regioselective and stereoselective manner.
S. Lanka, S. Thennarasu, P. Perumal
semanticscholar   +1 more source

Homochiral crystallization of metal-organic silver frameworks: asymmetric [3+2] cycloaddition of an azomethine ylide.

Angewandte Chemie, 2012
Metal–organic frameworks (MOFs) are hybrid solids with infinite network structures built from organic bridging ligands and inorganic connecting nodes.
Xu Jing, Cheng He, Dapeng Dong, Linlin Yang, Chunying Duan   +4 more
semanticscholar   +1 more source

1,3-Dipolar cycloaddition-decarboxylation reactions of an azomethine ylide with isatoic anhydrides: formation of novel benzodiazepinones.

Organic Letters, 2011
A nonstabilized azomethine ylide reacts with a wide range of substituted isatoic anhydrides to afford novel 1,3-benzodiazepin-5-one derivatives, which are generally isolated in high yield.
Asha M. D'souza, Nadia Spiccia, Jose A. Basutto, Pawel G. Jokisz, L. S. Wong, A. G. Meyer, A. Holmes, J. White, J. H. Ryan   +8 more
semanticscholar   +1 more source

Tether-Mediated Stereocontrol in Intramolecular Azomethine Ylide Cycloadditions

The Journal of Organic Chemistry, 1994
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Stephen J. Klippenstein, David B. McConville, Philip B. Cox, Wiley J. Youngs, Philip Garner   +4 more
openaire   +3 more sources

Reagents for Storage and Regeneration of Nonstabilized Azomethine Ylides: Spiroanthraceneoxazolidines

Organic Letters, 2016
AbstractThe unusual properties of spiroanthraceneoxazolidines (I) derived from easily accessible anthraquinone, N‐substituted glycine, and formaldehyde are reported.
Evgeny M. Buev, Vyacheslav Ya. Sosnovskikh, Vladimir S. Moshkin   +2 more
openaire   +4 more sources

1,3‐Dipolar cycloaddition of unstabilized N‐methyl azomethine ylide to nitrobenzene annelated with azoles

, 2011
The 1,3-dipolar cycloaddition of unstabilized N-methyl azomethine ylide to mononitro benzazoles was studied. Depending on the nature of substituents and annelated azoles, the reaction affords previously unknown isoindole fused heterocyclic systems.
A. Starosotnikov, M. Bastrakov, S. Y. Pechenkin, Margarita A. Leontieva, V. Kachala, S. Shevelev   +5 more
semanticscholar   +1 more source

Silver-Catalyzed Azomethine Ylide Cycloaddition [PDF]

Synfacts, 2013
Mark Lautens, David A. Petrone
openaire   +1 more source

1,3-Dipolar Cycloaddition of Azomethine Ylides [PDF]

Synfacts, 2006
Juan C. Carretero, S. Cabrera, Ramon Gomez Arrayas   +2 more
openaire   +1 more source