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Synthesis of tricyclic fused pyrrolidine nitroxides from 2-alkynylpyrrolidine-1-oxyls [PDF]
Beilstein Journal of Organic ChemistryRotational 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
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(R,R)-N-phenyl-3,4-bis(diphenylphosphino)pyrrolidine: an N-aryl pyrrolidine ligand for enantioselective transfer hydrogenation [PDF]
Journal of Molecular Catalysis A, 2001 The N-aryl pyrrolidine diphosphine (R,R)-N-phenyl-3,4-bis(diphenylphosphino)pyrrolidine was obtained from natural tartaric acid. Contrary to our preliminary expectations, this new chiral ligand proved to be less selective than the corresponding N-benzyl ...
Manuela Ramos Silva +2 more
exaly +3 more sources
Nylon 4,I: an amorphous polyamide [PDF]
, 1984 The melt polymerization of nylon 4, I was studied, starting with nylon-salt and nylon prepolymers (ηinh=0.25). With nylon-salt only low molecular polymers were obtained, while with prepolymers the inherent viscosity could be raised to 0.77 (3h, 270°, vac.
Gaymans, R.J., Ham, A.G.J. van der
core +17 more sources
(Z)-1-Benzyl-5-(4-bromophenyl)-5-hydroxy-4-(2-oxomorpholin-3-ylidene)pyrrolidine-2,3-dione
Molbank, 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
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Acta 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
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Asymmetric Synthesis of Polyfunctionalized Pyrrolidines from Sulfinimine-Derived Pyrrolidine 2-Phosphonates. Synthesis of Pyrrolidine 225C [PDF]
Organic 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
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Synthesis of a New Chiral Pyrrolidine [PDF]
Molecules, 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
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[(Pyrrolidin-1-yl)carbothioylsulfanyl]methyl pyrrolidine-1-carbodithioate [PDF]
Acta 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
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Stereoselective Synthesis of Cyclobutanes by Contraction of Pyrrolidines [PDF]
Journal 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
Acta 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
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