Results 121 to 130 of about 3,457 (229)
, 2004 International audienceA simple, highly efficient and cheap synthesis of substituted naphthalenes is reported. These aromatic compounds can be easily prepared in acidic or basic conditions from a-tetralones, obtained by a xanthate-mediated addition ...
Zard, Samir, +6 more
core +1 more source
Light‐Gated Control of Brownian Rotation by a Molecular Motor
Angewandte Chemie, EarlyView.A light‐driven molecular motor acts as a reversible steric gate for a nearby Brownian rotor. Photoisomerization switches the rotor between fast and hindered rotational regimes by modulating steric congestion around the rotational axis. The motor–rotor architecture enables a five‐order‐of‐magnitude difference in the rotational barrier, demonstrating ...
Lukáš Severa +7 more
wiley +1 more source
BiomoleculesThe naphthoquinone juglone (5-hydroxynaphthalene-1,4-dione) (1) occurs abundantly in nature, especially in species belonging to the Juglandaceae family. Due to its multifaceted biological activities, this compound is considered a privileged structure in ...
Giovanni Vidari +5 more
doaj +1 more source
, 2016 The scope and limitations of the tandem conjugate addition−Dieckmann condensation for the construction of 1,2,3-trisubstituted naphthalenes is defined.
Joel L. Stevens (2725429) +3 more
core +1 more source
Angewandte Chemie, EarlyView.Catalytic, intramolecular N‐heterocycle arylation by nucleophilic aromatic substitution (SNAr) is now available for synthesis of highly strained macrocycles and medium‐sized heterobiaryl atropisomeric rings, including atropopeptides. Key to the approach is the ability to generate a strong base catalytically, taking advantage of base‐embedding ...
Alireza Abbasi Kejani +7 more
wiley +1 more source
Molecular and Electronic Structure of 1,8-Peribridged Naphthalenes
, 2016 The crystal and molecular structure of 1,8-thianaphthalene has been determined and compared with other single-atom peribridged naphthalenes (SAPN). The measured CSC angle is 73.06°, which is the smallest bridging angle yet recorded for a SAPN derivative.
Branka Kovač (2352451) +3 more
core +1 more source
Bulletin of the Chemical Society of Ethiopia, 2007 Samples of light, medium and heavy Nigerian crude oils and petroleum products including diesel oil, engine oil (SAE 40) and gasoline (PMS) have been separated into four fractions of saturates, monoaromatics, diaromatics and polyaromatics by elution ...
E.O. Odebunmi, S.A. Adeniyi
doaj
Fluorescence quenching of substituted naphthalenes by inorganic anions [PDF]
, 1995 419-422Quenching of fluorescence of six substituted naphthalenes by inorganic anions have been studied. The quenching is dynamic with the involvement of electron transfer from the anion to the fluorophore in the quenching process.
Mishra, A K, Behera, P K, Mukherjee, T
core
Phosphine-Mediated Multi-Component γ-Umpolung/Aldol/Wittig Cascade Reaction for the Synthesis of Functionalized Naphthalenes [PDF]
, 2013 This study describes an efficient and convenient triphenylphosphine-mediated γ-umpolung/aldol/Wittig cascade reaction. This is the first time that phosphine has been used to mediate a multi-component coupling reaction involving alleonates, nucleophiles ...
Zhang, Kui
core
Nature CommunicationsSelective catalytic aromaticity-breaking epoxidation of arenes remains an ongoing research challenge, attributed to the stability of aromatic systems, the occurrence of over-oxidation, and the instability of epoxides.
Hongli Wu +7 more
doaj +1 more source