Metal-free hydrogenation catalysis of polycyclic aromatic hydrocarbons

2012 ◽  
Vol 48 (98) ◽  
pp. 11963 ◽  
Author(s):  
Yasutomo Segawa ◽  
Douglas W. Stephan
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Metal Free ◽  
Polycyclic Aromatic ◽  
Hydrogenation Catalysis

scholarly journals Polycyclic aromatic azomethine ylides: a unique entry to extended polycyclic heteroaromatics

2015 ◽  
Vol 6 (1) ◽  
pp. 436-441 ◽  
Author(s):  
Reinhard Berger ◽  
Manfred Wagner ◽  
Xinliang Feng ◽  
Klaus Müllen
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Azomethine Ylides ◽  
Metal Free ◽  
Polycyclic Aromatic

Based on polycyclic aromatic azomethine ylides, a metal-free “cycloaddition-planarization-sequence” is proposed, providing a unique entry to nitrogen-containing polycyclic aromatic hydrocarbons.

Metal-free naphthannulation reactions of yne-allenone esters for accessing polycyclic aromatic hydrocarbons

2018 ◽  
Vol 54 (74) ◽  
pp. 10415-10418 ◽  
Author(s):  
Hong-Kai Sha ◽  
Ting Xu ◽  
Feng Liu ◽  
Bu-Zheng Tang ◽  
Wen-Juan Hao ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Free Base ◽  
Metal Free ◽  
Direct Assembly ◽  
Wide Range ◽  
Polycyclic Aromatic

The first metal-free base-promoted naphthannulation reactions of yne-allenone esters were developed for the direct assembly of a wide range of polycyclic aromatic hydrocarbons with generally good yields.

An atom- and pot-economical consecutive multi-step reaction approach to polycyclic aromatic hydrocarbons (PAHs)

2017 ◽  
Vol 53 (11) ◽  
pp. 1904-1907 ◽  
Author(s):  
Chada Raji Reddy ◽  
Uredi Dilipkumar ◽  
Ravula Shravya
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Reaction Conditions ◽  
Metal Free ◽  
Polycyclic Aromatic

A novel [4+2]-benzannulation approach to substituted polycyclic aromatic hydrocarbons has been developed under atom-economical, mild and metal-free reaction conditions.

Modular metal-free catalytic radical annulation of cyclic diaryliodoniums to access π-extended arenes

2021 ◽  
Author(s):  
Daqian Zhu ◽  
Hui Peng ◽  
Yameng Sun ◽  
Zhouming Wu ◽  
Yun Wang ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Free Radical ◽  
Transition Metal ◽  
Ethyl Acetate ◽  
Aromatic Hydrocarbons ◽  
Environmentally Friendly ◽  
Metal Free ◽  
Polycyclic Aromatic

Tert-butylamine-catalyzed free radical annulations with cyclic diaryliodoniums occur in environmentally friendly ethyl acetate and do not require transition metal, providing diversified polycyclic aromatic hydrocarbons by modulating substituents.

The Assessment of Contamination and Source of Polycyclic Aromatic Hydrocarbons from the Sediments of the Someş River

2019 ◽  
Vol 64 (1) ◽  
pp. 55-67
Author(s):  
Vlad Pӑnescu ◽  
◽  
Mihaela Cӑtӑlina Herghelegiu ◽  
Sorin Pop ◽  
Mircea Anton ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Polycyclic Aromatic

1,1’-Biaceanthrylene and 2,2'-Biaceanthrylene: Models for Linking Larger Polycyclic Aromatic Hydrocarbons via Five-Membered Rings

2019 ◽  
Author(s):  
Yachu Du ◽  
Kyle Plunkett
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Electronic Properties ◽  
Aromatic Hydrocarbons ◽  
Model Systems ◽  
Redox Potentials ◽  
Dimer Model ◽  
Optical And Electronic Properties ◽  
Polycyclic Aromatic

We show that polycyclic aromatic hydrocarbon (PAH) chromophores that are linked between two five-membered rings can access planarized structures with reduced optical gaps and redox potentials. Two aceanthrylene chromophores were connected into dimer model systems with the chromophores either projected outward (2,2’-biaceanthrylene) or inward (1,1’-biaceanthrylene) and the optical and electronic properties were compared. Only the planar 2,2’-biaceanthrylene system showed significant reductions of the optical gaps (1 eV) and redox potentials in relation to the aceanthrylene monomer.<br>

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