Results 31 to 40 of about 165,943,760 (239)

3,6-Dibromo-9-(4-chlorobenzyl)-9H-carbazole

Acta Crystallographica Section E, 2009
The title compound, C19H12Br2ClN, was synthesized by N-alkylation of 1-chloro-4-(chloromethyl)benzene with 3,6-dibromo-9H-carbazole. The carbazole ring system is essentially planar (mean deviation of 0.028 Å) and makes a dihedral angle of 74.6&
Liu-qing Cai, Mei Duan, Jian-lan Cui
doaj   +1 more source

Friedel Craft’s alkylation of benzene to cumene over doped cobalt nanoferrite catalysts

Results in Chemistry, 2022
Nitrogen, sulphur and zirconium doped cobalt ferrites prepared by coprecipitation method were evaluated as catalysts for the production of cumene from benzene and isopropyl alcohol.
S. Kavitha, Manju Kurian
doaj   +1 more source

Enhancement of Dissymmetry Factors Through Axial Elongation of Hetero[n]helicenes

Angewandte Chemie, EarlyView.
A benzofuran scaffolding strategy enables the synthesis of hetero[9]‐, [12]‐, and [15]helicenes. Structural and chiroptical analyses demonstrate that systematic axial elongation increases helical distortion and significantly amplifies luminescence dissymmetry.
Jeppe S. Mogensen, Christoffer Bræstrup, Christoffer Warming, Georg I. Junker, Yann Lie, Mathias Hermann, Kurt V. Mikkelsen, Michael Pittelkow   +7 more
wiley   +2 more sources

3-Bromo-9-(4-chlorobenzyl)-9H-carbazole

Acta Crystallographica Section E, 2009
The title compound, C19H13BrClN, was synthesized by N-alkylation of 4-chloro-1-(chloromethyl)benzene with 3-bromo-9H-carbazole. The carbazole ring system is essentially planar, with a mean deviation of 0.028 Å, and it makes a dihedral ...
Zi-Dan Xiao, Tong Pan, Dao-Wu Yang
doaj   +1 more source

Chiral Fjord‐Edged Nanographenes Constructed by Allylic‐Migration‐Mediated Cyclization

Angewandte Chemie, EarlyView.
A novel allylic‐migration‐mediated cyclization strategy enables the construction of two fjord‐edged nanographenes without steric blocking groups. The resulting non‐planar molecules exhibit remarkable chiroptical properties, with an absorption dissymmetry factor surpassing those of pristine [5]helicene and previously reported fjord‐edged nanographenes ...
Zhen‐Lin Qiu, Jiang‐Feng Xing, Boris Borrisov, Qing‐Song Deng, Renxiang Liu, Muhammad Imran, Ji Ma, Xinliang Feng   +7 more
wiley   +2 more sources

The Use of C2–C5 Hydrocarbons for Production of Gasoline Components

Eurasian Chemico-Technological Journal, 2004
A conversion of light hydrocarbons (C2–C5) over HZSM-zeolite-containing catalysts modified by the VA Group metals was studied. The process was carried out in a flow reactor at varying temperature from 350 to 400 °C, pressure – 0.1-0.5 MPa and space ...
G.D. Zakumbaeva, N. Ph. Toktabaeva, A.Zh. Kubasheva, L.V. Gorbacheva, A.I. Lyashenko, I.S. Chanysheva   +5 more
doaj   +1 more source

A novel catalyst for alkylation of benzene

Comptes Rendus. Chimie, 2012
In this research, acid-activated and pillared montmorillonite were prepared as catalysts for alkylation of benzene with 1-decene for production of linear alkyl bebzene (LAB). The catalysts were characterized by X-ray diffraction (XRD), FT-IR spectroscopy, scanning electron microscopy (SEM), N 2
Hossein Faghihian, Mohammad Hadi Mohammadi   +1 more
openaire   +1 more source

Orchestrating Anion–π+ Interactions to Accelerate Metal‐Free Room‐Temperature Phosphorescence

Angewandte Chemie, EarlyView.
Tuning anion–π+ interactions in pyridinium iodide contact ion pairs enables ultrafast metal‐free room‐temperature phosphorescence (540–605 nm) with radiative rates up to 5.2×105 s−1. Strong iodide→π+ charge‐transfer coupling, enhanced spin–orbit interactions, and dynamic ion‐pair organization accelerate intersystem crossing and emission, establishing ...
Eetu Hakkarainen, Corentin Montagne, Hao‐Cheng Lin, Chen‐Yu Lin, Khai‐Nghi Truong, Po‐Yu Chen, Anton Nechaev, Fabien B. L. Cougnon, Igor O. Koshevoy, Toni Eskelinen, Hao‐Wu Lin, Pi‐Tai Chou, Andrey Belyaev   +12 more
wiley   +2 more sources

Benzene alkylation with propane over Mo modified HZSM-5

, 2007
Benzene alkylation with propane has been studied over HZSM-5 loading 3.1-15.4 wt% Mo in continuous-flow microreactor under 350 degrees C and atmospheric pressure with the highest activity obtained at 6.7 wt% Mo loading.
Sun, Xinde, 刘中民, Huang, Xueqing, Liu, Zhongmin, Zhu, Shukui   +4 more
core   +1 more source

Iron‐Photocatalyzed Alkene Chloroaminoxylation: A Platform for Orthogonally Activatable Building Blocks

Angewandte Chemie, EarlyView.
An iron‐photocatalyzed unsymmetrical 1,2‐hetero(atom)difunctionalization of alkenes enables to install orthogonal C–Cl and C–O (alkoxyamine) handles which provides access to diverse nucleophiles via complementary reactivity (SN and photoredox) at two distinct sites. Detailed mechanistic studies elucidate interesting features of the iron catalytic cycle.
Amrita Chaudhuri, Meghana Aladahalli Shekar, Mohammad Zafar, Marianne Engeser, Gregor Schnakenburg, Ala Bunescu   +5 more
wiley   +2 more sources