Results 31 to 40 of about 451 (130)

Advances in organic UV filters for sunscreens over the past decade

Photochemistry and Photobiology, EarlyView.
Highlighted organic UV filter frameworks that have been described for sunscreens over the past decade divided into three groups: derivatives of or inspired by approved organic UV filters, natural product‐based compounds, and miscellaneous. Abstract Ultraviolet (UV) radiation is a major environmental factor in photoaging, erythema, and skin cancer ...
Gabriela Zanella Marcon, Maria Carolina Theisen, Andressa Motta Castro, Giovana Jones Radke, Fernando Fumagalli   +4 more
wiley   +1 more source

1-Propyl-1H-indole-2,3-dione

IUCrData, 2016
In the title compound, C11H11NO2, the 1H-indole-2,3-dione unit is essentially planar, with an r.m.s. deviation of 0.0387 (13) Å. This plane makes a dihedral angle of 72.19 (17)° with the plane of the propyl substituent. In the crystal, chains propagating
Fatima Zahrae Qachchachi, Youssef Kandri Rodi, Amal Haoudi, El Mokhtar Essassi, Frédéric Capet, Hafid Zouihri   +5 more
doaj   +1 more source

Crystal structures of 2-methoxyisoindoline-1,3-dione, 1,3-dioxoisoindolin-2-yl methyl carbonate and 1,3-dioxo-2,3-dihydro-1H-benzo[de]isoquinolin-2-yl methyl carbonate: three anticonvulsant compounds

Acta Crystallographica Section E, 2014
The title compounds, C9H7NO3, (1), C10H7NO5, (2), and C14H9NO5, (3), are three potentially anticonvulsant compounds. Compounds (1) and (2) are isoindoline derivatives and (3) is an isoquinoline derivative.
Fortune Ezemobi, Henry North, Kenneth R. Scott, Anthohy K. Wutoh, Ray J. Butcher   +4 more
doaj   +1 more source

Interrupted Intramolecular Hydroaminomethylation of N-Protected-2-vinyl Anilines: Novel Access to 3-Substitued Indoles or Indoline-2-ols

Molecules, 2022
A new synthetic alternative to the synthesis of 3-methyl indoles and 3-methyl indoline-2-ols with an excellent atomic economy is presented in this study.
Frank Hochberger-Roa, Perla H. García-Ríos, José G. López-Cortés, M. Carmen Ortega-Alfaro, Jean-Claude Daran, Maryse Gouygou, Martine Urrutigoïty   +6 more
doaj   +1 more source

Synthesis of N‐Alkylated Indolines and Indoles from Indoline and Aliphatic Ketones

Journal of Heterocyclic Chemistry, 2015
A survey of redox aminations of indoline with aliphatic ketones using bismuth nitrate as catalyst is described. A reaction of an equivalent amount of indoline and aliphatic cyclic and acyclic ketones provides a mixture of excessive alkylated indole derivatives over typically redox isomerization and reductive alkylation pathways while using of the five ...
Bayindir, Sinan, Erdogan, Esra, Kilic, Haydar, Aydin, Omer, Saracoglu, Nurullah   +4 more
openaire   +3 more sources

Catalytic Enantioselective Intramolecular Aza‐Michael Addition to α,β‐Unsaturated Esters

Angewandte Chemie, Volume 138, Issue 30, 20 July 2026.
A general method for accessing enantioenriched saturated N‐heterocycles via a catalytic enantioselective intramolecular aza‐Michael reaction to α,β‐unsaturated esters is described. A superbasic bifunctional iminophosphorane (BIMP) catalyst was key to enabling reactivity of the high pKa sulfonamide pronucleophile, whilst delivering good to excellent ...
Evan G. W. Rutter, Cameron J. MacRae, Haoran Xiong, Daniel Rozsar, Katherine F. P. Clarke, Darren J. Dixon   +5 more
wiley   +2 more sources

Crystal structure of 5-bromo-1-ethylindoline-2,3-dione

Acta Crystallographica Section E: Crystallographic Communications, 2015
The title compound, C10H8BrNO2, crystallizes with two independent molcules (A and B) in the asymmetric unit. In each molecule, the indoline ring system is almost planar, with the largest deviation from the mean plane being 0.016 (2) Å in molecule A and 0.
Yassine Kharbach, Amal Haoudi, Frédéric Capet, Ahmed Mazzah, Lahcen El Ammari   +4 more
doaj   +1 more source

Planarized and Twisted Intramolecular Charge Transfer: Small Geometric, Huge Photophysical Changes

European Journal of Organic Chemistry, Volume 29, Issue 29, 7 August 2026.
Molecular motion governs excited state relaxation in aminobenzonitrile donor–acceptor systems. Small structural modifications control single and dual rotations and enable distinct relaxation pathways. Fluorescence spectroscopy, Lippert–Mataga analysis, and theoretical calculations identify multiple excited states, including a dual‐emitting planarized ...
Zoe Nonie Scheller, David Liese, Gebhard Haberhauer   +2 more
wiley   +1 more source

1,3′-Dimethyl-2-oxo-6′-phenyl-7′H-spiro[indoline-3,4′-isoxazolo[5,4-b]pyridine]-5′-carbonitrile

IUCrData
The title compound, C22H16N4O2, crystallizes in the monoclinic space group P21/c with two independent molecules, A and B, in the asymmetric unit. The isoxazole ring is inclined to the pyridine ring system, the indoline ring, and the phenyl ring by 8.00 ...
S. Logalakshmi, Panneerselvam Yuvaraj, Dhruba Jyoti Boruah, R. Raja, G. Puthilibai   +4 more
doaj   +1 more source

Reduction of arenediazonium salts by tetrakis(dimethylamino)ethylene (TDAE): Efficient formation of products derived from aryl radicals

Beilstein Journal of Organic Chemistry, 2009
Tetrakis(dimethylamino)ethylene (TDAE 1), has been exploited for the first time as a mild reagent for the reduction of arenediazonium salts to aryl radical intermediates through a single electron transfer (SET) pathway.
Mohan Mahesh, John A. Murphy, Franck LeStrat, Hans Peter Wessel   +3 more
doaj   +1 more source