Results 261 to 270 of about 80,245 (335)

Naphthalene Addiction

Substance Abuse, 2012
Inhalant abuse such as kerosene, petrol, gasoline, and typewriter correction fluid has been reported from India. Naphthalene or mothballs, a commonly used substance in households and freely available in the market is an uncommon form of inhalant abuse which may lead to severe medical complications. We report an adolescent with addiction to naphthalene
Samir Kumar, Praharaj, Sreejayan, Kongasseri   +1 more
openaire   +2 more sources

Enaminones as Synthons for a Directed C-H Functionalization: Rh(III) -Catalyzed Synthesis of Naphthalenes.

Angewandte Chemie, 2016
The use of enaminones as effective synthons for a directed C-H functionalization is reported. Proof-of-concept protocols have been developed for the Rh(III) -catalyzed synthesis of naphthalenes, based on the coupling of enaminones with either alkynes or ...
Shuguang Zhou, Jinhu Wang, Lili Wang, Chao Song, Kehao Chen, Jin Zhu   +5 more
semanticscholar   +1 more source

Nitromethane as a Carbanion Source for Domino Benzoannulation with Ynones: One-Pot Synthesis of Polyfunctional Naphthalenes and a Total Synthesis of Macarpine.

Angewandte Chemie, 2018
A one-pot, transition-metal-free, domino Michael/SN Ar protocol of general applicability has been devised for the regioselective synthesis of polyfunctional naphthalenes by employing nitromethane and ortho-haloaryl ynones.
Shweta Singh, Ramesh Samineni, Srihari Pabbaraja, G. Mehta   +3 more
semanticscholar   +1 more source

Mobilities of electrons and holes in naphthalene and perdeuterated naphthalene

Chemical Physics Letters, 1983
Abstract Charge carrier mobilities are presented over a wide temperature range (77–300 K) for electrons and holes in naphthalene and perdeuterated naphthalene for the a, b , and c ' crystallographic directions. Consideration is given to the implications of the observed deuteration effects on the validity of band and hopping models in these ...
N. Karl, L.B. Schein, W. Warta, A.R. McGhie   +3 more
openaire   +2 more sources

Dipyrene-Fused Dicyclopenta[a,f]naphthalenes.

Journal of Organic Chemistry, 2019
Herein, we demonstrate an efficient synthesis of two antiaromatic constitutional isomers of pyrene-fused dicyclopenta[a,f]naphthalenes (PCPNs) 1a and 1b featuring 44 π-conjugated electrons.
Jason Melidonie, E. Dmitrieva, Kecheng Zhang, Yubin Fu, A. Popov, W. Pisula, R. Berger, Junzhi Liu, Xinliang Feng   +8 more
semanticscholar   +1 more source

Ruthenium-Catalyzed Cycloisomerization of 2-Alkynylstyrenes via 1,2-Carbon Migration That Leads to Substituted Naphthalenes.

Chemistry, 2018
A ruthenium-catalyzed carbocyclization of 2-alkynylstyrenes that involves a very rare 1,2-carbon migration of internal alkynes is reported. Various 1,2-di -and 1,4,7-trisubstituted naphthalenes are synthesized.
Takuma Watanabe, Haruka Abe, Y. Mutoh, S. Saito   +3 more
semanticscholar   +1 more source

Sequential σ-Bond Insertion/Benzannulation Involving Arynes: Selective Synthesis of Polysubstituted Naphthalenes.

Journal of Organic Chemistry, 2018
An interesting σ-bond insertion/benzannulation reaction for the synthesis of polysubstituted naphthalene derivatives has been developed from readily accessible ketones, arynes, and alkynoates.
Wen-Ming Shu, Shan Liu, Jian-Xin He, Shuai Wang, A. Wu   +4 more
semanticscholar   +1 more source

Naphthalene Amidine Imide Dyes by Transamination of Naphthalene Bisimides

Chemistry – A European Journal, 2006
AbstractDerivatives of naphthalene‐1,4,5,8‐tetracarboxylic acid with amidine structures have been prepared. The light absorption of the bisimide derivatives in the UV region is shifted to the visible for the amidine imides, which also fluoresce with a large Stokes shift. It has been shown how the bisimide–lactam rearrangement can be extended to amidine
Harald Jaschke, Heinz Langhals
openaire   +3 more sources

ChemInform Abstract: THE STRUCTURE OF NAPHTHALENE

Chemischer Informationsdienst, 1981
Abstract The structure of naphthalene has been determined by ab initio gradient computation at the Hartree—Fock level using the 4–21 basis set. Special attention is paid to the small differences between the nearly equal C-C distances and to evaluation of the ability of electron diffraction experiments to distinguish among them.
James E. Boggs, Harrell Sellers
openaire   +3 more sources

Synthesis of Octaaryl Naphthalenes and Anthracenes with Different Substituents.

Angewandte Chemie, 2017
A synthesis of multiply arylated naphthalenes and anthracenes with eight different substituents has been accomplished. The key intermediates are tetraarylthiophene S-oxides, which are synthesized through a method involving sequential C-H arylation and ...
Shin Suzuki, K. Itami, Junichiro Yamaguchi   +2 more
semanticscholar   +1 more source