Search results for "Indoline"
showing 10 items of 16 documents
Anionic-anionic asymmetric tandem reactions: one-pot synthesis of optically pure fluorinated indolines from 2-p-tolylsulfinyl alkylbenzenes.
2008
2-[(1-Methyl-1H-pyrrol-2-yl)carbonyl-meth-yl]isoindoline-1,3-dione.
2009
The asymmetric unit of the title compound, C15H12N2O3, contains two almost identical molecules forming an nearly C2-symmetric dimeric pattern. The dihedral angles between the pyrrole ring and the phthalimide unit are 82.95 (8) and 86.57 (8)° for the two molecules. Within such a dimer, the phthalimide units of the two molecules form a dihedral angle of 1.5 (5)°.
Ultrafast Twisting of the Indoline Donor Unit Utilized in Solar Cell Dyes: Experimental and Theoretical Studies
2015
Previous time-resolved measurements on D149, the most-studied dye of the indoline family, had shown a fast time-component of 20–40 ps that had tentatively been attributed to structural relaxation. Using femtosecond transient absorption, we have investigated the isolated indoline donor unit (i.e., without acceptor group) and found an ultrafast decay characterized by two lifetimes of 3.5 and 23 ps. Density functional theory calculations show π-bonding and π*-antibonding character of the central ethylene group for the highest occupied and lowest unoccupied molecular orbitals (HOMO and LUMO), respectively. The LUMO is localized on the flexible vinyl-diphenyl region of the donor unit and a twist…
Gold-Catalyzed Intramolecular Hydroamination of o-Alkynylbenzyl Carbamates: A Route to Chiral Fluorinated Isoindoline and Isoquinoline Derivatives
2013
Enantiomerically pure fluorinated isoindoline and dihydroisoquinoline scaffolds have been prepared through a diastereoselective addition of fluorinated nucleophiles to Ellman’s N-(tert-butanesulfinyl)imines followed by a sequence of Sonogashira cross-coupling/gold(I)-catalyzed cycloisomerization of the corresponding carbamate. A more favored 5-exo-dig mechanism was observed mainly due to an electronic effect of the fluorinated group.
Farinomalein derivatives from an unidentified endophytic fungus isolated from the mangrove plant Avicennia marina
2012
Five farinomalein derivatives including three new compounds, farinomaleins C–E (3–5), and one new isoindoline congener (6) were isolated from an unidentified endophytic fungus obtained from the inner tissues of healthy leaves of the mangrove plant Avicennia marina from Oman. The structures of the new compounds were unambiguously elucidated on the basis of their mass, as well as one and two dimensional NMR spectroscopic data.
CCDC 162577: Experimental Crystal Structure Determination
2001
Related Article: J.Zaleski, Z.Daszkiewicz, J.B.Kyziol|2001|Acta Crystallogr.,Sect.C:Cryst.Struct.Commun.|57|304|doi:10.1107/S0108270100019144
CCDC 830703: Experimental Crystal Structure Determination
2011
Related Article: B.Zarychta, J.Zaleski, J.Kyziol, Z.Daszkiewicz, C.Jelsch|2011|Acta Crystallogr.,Sect.B:Struct.Sci.|67|250|doi:10.1107/S0108768111013140
CCDC 750634: Experimental Crystal Structure Determination
2009
Related Article: J.Schlosser, D.Schollmeyer, S.Laufer, C.Peifer|2009|Acta Crystallogr.,Sect.E:Struct.Rep.Online|65|o2375|doi:10.1107/S1600536809034515
CCDC 1405500: Experimental Crystal Structure Determination
2016
Related Article: Mohamed Mehdi Rammah, Wafa Gati, Hasan Mtiraoui, Mohamed El Baker Rammah, Kabula Ciamala, Michael Knorr, Yoann Rousselin, Marek M. Kubicki|2016|Molecules|21|307|doi:10.3390/molecules21030307
Asymmetric tandem reactions: New synthetic strategies
2010
The use of domino and multicomponent reactions in asymmetric synthesis is constantly increasing nowadays. This allows for the synthesis of complex molecules in a single synthetic sequence, usually with high atom economy. Herein, we report three examples of new asymmetric tandem reactions recently developed in our laboratories, giving rise to new families of enantiomerically enriched fluorinated and nonfluorinated heterocycles. Thus, 1,4-dihydropyridines (1,4-DHPs) bearing fluorinated substituents at C6 were assembled by means of a Hantzsch-type reaction; cyclic β-amino carbonyl derivatives were prepared using a cross-metathesis (CM)–intramolecular aza-Michael sequence; while fluorinated ind…