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Synthesis of tricyclic fused pyrrolidine nitroxides from 2-alkynylpyrrolidine-1-oxyls [PDF]

open access: yesBeilstein Journal of Organic Chemistry
Rotational correlation time is a key parameter for organic radical contrast agents (ORCA) for magnetic resonance imaging (MRI). Design of polycyclic systems with incorporated nitroxide moieties in which rotation of the radical separately from the ...
Mark M. Gulman   +6 more
doaj   +2 more sources

(Z)-1-Benzyl-5-(4-bromophenyl)-5-hydroxy-4-(2-oxomorpholin-3-ylidene)pyrrolidine-2,3-dione

open access: yesMolbank, 2023
The reaction of 8-(4-bromobenzoyl)-3,4-dihydro-1H-pyrrolo[2,1-c][1,4]oxazine-1,6,7-trione with benzylamine in acetonitrile at room temperature afforded a good yield of (Z)-1-benzyl-5-(4-bromophenyl)-5-hydroxy-4-(2-oxomorpholin-3-ylidene)pyrrolidine-2,3 ...
Nikita A. Tretyakov, Andrey N. Maslivets
doaj   +1 more source

Pyrrolidine-2,5-dione [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2012
In the title compound, C(4)H(5)NO(2), the non-H atoms are nearly coplanar, with a maximum deviation of 0.030 (1) Å. In the crystal, pairs of mol-ecules are linked by N-H⋯O hydrogen bonds into inversion dimers.
Min Yu, Xing Huang, Feng Gao
openaire   +3 more sources

Asymmetric Synthesis of Polyfunctionalized Pyrrolidines from Sulfinimine-Derived Pyrrolidine 2-Phosphonates. Synthesis of Pyrrolidine 225C [PDF]

open access: yesOrganic Letters, 2006
[reaction: see text] The Horner-Wadsworth-Emmons reaction of aldehydes with sulfinimine-derived 3-oxo pyrrolidine phosphonates represents a new method for the asymmetric synthesis of ring-functionalized cis-2,5-disubstituted 3-oxo pyrrolidines.
Franklin A, Davis   +3 more
openaire   +2 more sources

Synthesis of a New Chiral Pyrrolidine [PDF]

open access: yesMolecules, 2010
The synthesis of a new chiral pyrrolidine has been performed using 2,3-O-isopropylidene-D-erythronolactol as a suitable starting material.
Mari Fe. Flores   +7 more
openaire   +3 more sources

[(Pyrrolidin-1-yl)carbothioylsulfanyl]methyl pyrrolidine-1-carbodithioate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2010
The title compound, C(11)H(18)N(2)S(4), was unexpectedly obtained during studies on the reactivity of the complex tris-(acac-κ(2)O,O')gallium(III) (acac is acetyl-acetonate) with C(4)H(8)NCS(2)H in dichloro-methane. The title compound shows disordered two pyrrolidine rings with major and minor occupancies of 0.546 (4) and 0.454 (4).
Yen-Hsiang Huang   +4 more
openaire   +3 more sources

Stereoselective Synthesis of Cyclobutanes by Contraction of Pyrrolidines [PDF]

open access: yesJournal of the American Chemical Society, 2021
Here we report a contractive synthesis of multisubstituted cyclobutanes containing multiple stereocenters from readily accessible pyrrolidines using iodonitrene chemistry. Mediated by a nitrogen extrusion process, the stereospecific synthesis of cyclobutanes involves a radical pathway.
Hui, C   +3 more
openaire   +4 more sources

5-Chloro-5′′-[4-(dimethylamino)benzylidene]-4′-[4-(dimethylamino)phenyl]-1′,1′′-dimethyldispiro[indoline-3,2′-pyrrolidine-3′,3′′-piperidine]-2,4′′-dione

open access: yesActa Crystallographica Section E, 2014
The title compound, C34H38ClN5O2, has spiro links connecting the pyrrolidine ring and indole residue, as well as the piperidine and pyrrolidine rings.
I. S. Ahmed Farag   +4 more
doaj   +1 more source

5′′-Benzylidene-5-chloro-1′,1′′-dimethyl-4′-phenyldispiro[indoline-3,2′-pyrrolidine-3′,3′′-piperidine]-2,4′′-dione

open access: yesActa Crystallographica Section E, 2014
The title compound, C30H28ClN3O2, features two spiro links, one connecting the piperidine and pyrrolidine rings, and the other connecting the pyrrolidine ring and indole residue. The configuration about the ethene bond is E.
I. S. Ahmed Farag   +4 more
doaj   +1 more source

Beyond the Simple Copper(II) Coordination Chemistry with Quinaldinate and Secondary Amines

open access: yesMolecules, 2020
Copper(II) acetate has reacted in methanol with quinaldinic acid (quinoline-2-carboxylic acid) to form [Cu(quin)2(CH3OH)]∙CH3OH (1) (quin− = an anionic form of the acid) with quinaldinates bound in a bidentate chelating manner.
Barbara Modec, Nina Podjed, Nina Lah
doaj   +1 more source

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