Results 21 to 30 of about 1,366 (154)

1,1,3-Trimethyl-3-(4-nitrophenyl)indane [PDF]

Acta Crystallographica Section E Structure Reports Online, 2008
In the title compound, C(18)H(19)NO(2), the five-membered ring of the indane fragment adopts an envelope conformation, with the unsubstituted C atom, acting as the flap atom, deviating by 0.412 (3) Å from the plane through the remaining four atoms. The dihedral angle between the nitro-phenyl ring and the indane benzene ring is 72.5 (1)°.
Shi-Xu Yi, Fang Bo, Hua Chen, Guo-Wei Gao, Jian Men   +4 more
openaire   +3 more sources

Highly Enantioselective Organocatalysis with Bidentate Halogen Bond Donors. [PDF]

Angew Chem Int Ed Engl
In a model Mukaiyama aldol reaction with unbiased substrates, high enantioselectivity was achieved with a modifiable bidentate iodine(I)‐based halogen bonding organocatalyst. The crucial role of halogen bonding was confirmed by the low performance of the corresponding hydrogen bond donor and via DFT calculations.
Wolf J, Mohanan MP, Robidas R, Sutar RL, Engelage E, Legault CY, Huber SM.   +6 more
europepmc   +2 more sources

Plant-Mediated Enantioselective Transformation of Indan-1-one and Indan-1-ol. Part 2 [PDF]

Molecules, 2019
The main purpose of this publication was to obtain the S-enantiomer of indan-1-ol with high enantiomeric excess and satisfactory yield. In our research, we used carrot callus cultures (Daucus carota L.), whereby the enzymatic system reduced indan-1-one and oxidized indan-1-ol.
Wanda Mączka, Katarzyna Wińska, Małgorzata Grabarczyk, Renata Galek   +3 more
openaire   +2 more sources

NMR analysis of (1S,1aR,6aR)-2’,3’,6,6a-tetrahydro-spiro[cycloprop[a]indene-1(1aH),1’-[1H]indene] [PDF]

Journal of the Serbian Chemical Society, 2005
The aldol condensation product of 1H-indan-1-one, (2E)-2-(2,3-dihydro-1H-inden-1-ylidene)-2,3-dihydro-1H-inden-1-one, subjected to Huang–Minlon reduction conditions was shown, via 1D and 2DNMRanalysis, to be amixture of (1S,1aR,6aR)-2’,3’,6,6a-tetrahydro-
PETER SPITELLER, JOVAN JOVANOVIC, MICHAEL SPITELLER   +2 more
doaj   +3 more sources

Intramolekulare Acylgruppenwanderung O-acylierter 1,3-Diketone

CHIMIA, 1973
At room temperature both Z-isomers of O-acylated 1-acetyl-indan-2-ones are rapidly converted into each other by a thermal intramolecular 1,5-acyl shift.
Klaus Hartke, Dieter Krampitz, Wolfgang Uhde   +2 more
doaj   +1 more source

EARTHQUAKE VULNERABILITY ASSESSMENT (EVAS): ANALYSIS OF ENVIRONMENTAL VULNERABILITY AND SOCIAL VULNERABILITY IN RANAU AREA, SABAH, MALAYSIA [PDF]

Geological Behavior, 2018
Earthquakes are one of the most common and widely distributed natural risks to life and property. There is a need to identify the possible risk by assessing the vulnerability of the research area. The topic on Earthquake Vulnerability Assessment (EVAs)
Elystarina Indan, Rodeano Roslee, Felix Tongkul, Norbet Simon   +3 more
doaj   +1 more source

Light-driven synthesis of 3-(hetero)aryl/alkyl-1-indanone derivatives from indan-1,3-diones and boronic acids via N-tosylhydrazones

Tetrahedron Chem
An efficient methodology has been developed for synthesizing 3-(hetero)aryl/alkyl-indan-1-ones, which are highly valued scaffolds in chemistry. This method allows the mono(hetero)arylation/alkylation of indane-1,3-diones with (hetero)aryl/alkyl boronic ...
Mohammad Junaid, Pokhriyal Yamini, Dongari Yadagiri   +2 more
doaj   +1 more source

4′-(4-Fluorophenyl)-1′-methyldispiro[indane-2,2′-pyrrolidine-3′,2′′-indane]-1,3,1′′-trione methanol hemisolvate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2013
La unidad asimétrica del compuesto del título, C29H24FNO5·0.5CH3OH, contiene dos mol-éculas independientes y una mol-ecula de disolvente de metanol. El mol-ecule de metanol es hidrógeno O-H O unido a uno de los mol-ecules independientes. Los anillos de pirrolidina en ambos mol-éculas adoptan conformaciones de media silla, mientras que los anillos de ...
Mohamed Ashraf Ali, Manogaran Elumalai, Tan Soo Choon, Mohd Mustaqim Rosli, Ibrahim Abdul Razak   +4 more
openaire   +2 more sources

Thermochemistry and photochemistry of spiroketals derived from indan-2-one: Stepwise processes versus coarctate fragmentations

Beilstein Journal of Organic Chemistry, 2013
Coarctate reactions are defined as reactions that include atoms at which two bonds are made and two bonds are broken simultaneously. In the pursuit of the discovery of new coarctate reactions we investigate the fragmentation reactions of cyclic ketals ...
Götz Bucher, Gernot Heitmann, Rainer Herges   +2 more
doaj   +1 more source

CSA-Catalyzed Three-component Synthesis of Fused Polycyclic Pyrazolo[4,3-e]pyridines Under Ultrasonic Irradiation and Their Antioxidant Activity

Journal of the Turkish Chemical Society, Section A: Chemistry, 2017
New fused pyrazolo[4,3-e]pyridines were obtained by multi-component reaction of 1,3-dimethyl-1H-pyrazol-5-amine or 3-phenyl-1H-pyrazol-5-amine, aromatic aldehydes and indan-1,3-dione in the presence of camphor-10-sulfonic acid (CSA) as an effective ...
Emel PELIT
doaj   +1 more source