Results 51 to 60 of about 1,366 (154)

Tuning NIR Absorption and Emission of Diphenyl‐Dihydrophenazine‐Based Merocyanines with Ultra Narrow Band Gap

open access: yesChemistry – A European Journal, Volume 31, Issue 42, July 25, 2025.
Novel merocyanine derivatives with a strong diphenyl‐dihydrophenazine donor and a series of strong electron acceptors were developed. The indanone and indandione acceptor units were modified by dicyanovinylene groups to tune acceptor strength. Among these derivatives, DPPZ‐IDD realized an ultranarrow electrochemical gap of 0.93 eV and an optical band ...
Kateřina Teichmanová   +8 more
wiley   +1 more source

Rearrangement of beta,gamma-unsaturated esters with thallium trinitrate: synthesis of indans bearing a beta-keto ester moiety

open access: yesJournal of the Brazilian Chemical Society, 2006
The rearrangement of beta,gamma-unsaturated esters, such as 2-(3,4-dihydronaphthalen-1-yl)-propionic acid ethyl ester, with thallium trinitrate (TTN) in acetic acid leads to 3-indan-1-yl-2-methyl-3-oxo-propionic acid ethyl ester in good yield, through a ...
Silva Jr. Luiz F.   +2 more
doaj  

(2E)-2-(4-Bromobenzylidene)-2,3-dihydro-1H-inden-1-one

open access: yesActa Crystallographica Section E, 2012
The title indan-1-one derivative, C16H11BrO, is planar, the r.m.s. deviation for all 18 non-H atoms being 0.071 Å. The configuration about the C=C bond [1.337 (5) Å] is E.
Edward R. T. Tiekink   +4 more
doaj   +1 more source

Hochgradig enantioselektive Organokatalyse mit zweizähnigen Halogenbrückendonoren

open access: yesAngewandte Chemie, Volume 137, Issue 30, July 21, 2025.
In einer Mukaiyama‐Aldol‐Modellreaktion mit allgemeinen Substraten wurden hohe Enantioselektivitäten mit einem modifizierbaren, bidentaten Iod(I)‐basierten Halogenbrücken‐Organokatalysator erreicht. Die entscheidende Rolle der Halogenbrücken wurde durch das schlechte Abschneiden des entsprechenden Wasserstoffbrückendonors und durch DFT‐Berechnungen ...
Julian Wolf   +6 more
wiley   +1 more source

(2E)-2-[(2E)-3-Phenylprop-2-en-1-ylidene]-2,3-dihydro-1H-inden-1-one

open access: yesActa Crystallographica Section E, 2012
The title indan-1-one derivative, C18H14O, is planar with an r.m.s. deviation for all 19 non-H atoms of 0.098 Å. The conformation about each of the C=C bonds [1.343 (3) and 1.349 (3) Å] is E ...
Edward R. T. Tiekink   +4 more
doaj   +1 more source

2-[(E)-4-(Dimethylamino)benzylidene]indan-1-one

open access: yesActa Crystallographica Section E, 2011
In the title compound, C18H17NO, the dihydroindene ring system is approximately planar, with a maximum deviation of 0.041 (2) Å.
Mohamed Ashraf Ali   +4 more
doaj   +1 more source

4-Bromo-2-(4-fluorobenzylidene)indan-1-one

open access: yesActa Crystallographica Section E, 2009
In the molecule of the title compound, C16H10BrFO, the indane ring system is planar with a maximum deviation of 0.020 (3) Å.
Yi-Xin Zhou   +4 more
doaj   +1 more source

(E)-2-[4-(Trifluoromethyl)benzylidene]-2,3-dihydro-1H-inden-1-one

open access: yesActa Crystallographica Section E, 2012
In the title molecule, C17H11F3O, the indan ring system and the trifluoromethyl-substituted benzene ring are approximately individually planar and form a dihedral angle of 1.81 (5)° with each other. In the crystal, molecules are linked
Ang Chee Wei   +4 more
doaj   +1 more source

A General Strategy for C(sp3)─H Bond Etherification via Quinoline Derivative‐Mediated Electrolysis

open access: yesAdvanced Science, Volume 12, Issue 22, June 12, 2025.
A quinoline‐based mediator is introduced for the electrochemical etherification of C(sp3)─H bonds, enabling the process with minimal dependence on substrate electronic properties. The reaction demonstrates compatibility with various C─H bonds, including tertiary benzylic C─H bonds and unactivated C(sp3)─H bonds.
Yousen Xu   +4 more
wiley   +1 more source

The reaction of 1-tetralones with thallium trinitrate supported on clay: ring contraction vs a-oxidation

open access: yesJournal of the Brazilian Chemical Society, 2001
The reaction of a series of 1-tetralones with thallium trinitrate supported on Montmorillonite K-10 clay led to products of ring contraction (methyl indan-1-carboxylates) and/or alpha-oxidation (2-methoxy-1-tetralones), in variable yields.
Ferraz Helena M. C.   +3 more
doaj  

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