نتایج جستجو برای: mono substituted benzene

تعداد نتایج: 76388  

2014
C. S. Dileep V. Lakshmi Ranganatha N. K. Lokanath S. A. Khanum M. A. Sridhar

In the title compound, C14H11FO2, the dihedral angles beteen the central C3O ketone residue and the fluoro- and hy-droxy-substituted benzene rings are 50.44 (9) and 12.63 (10)°, respectively. The planes of the benzene rings subtend a dihedral angle of 58.88 (9)° and an intra-molecular O-H⋯O hydrogen bond closes an S(6) ring. No directional inter-actions beyond van der Waals packing contacts wer...

2013
T. S. Yamuna H. S. Yathirajan Jerry P. Jasinski Amanda C. Keeley B. Narayana B. K. Sarojini

In the title compound, C15H10ClNO3, a substituted chalcone, the dihedral angle between the benzene rings is 5.1 (7)°. The nitro group makes a dihedral angle of 12.5 (3)° with the benzene ring to which it is attached. In the crystal, weak C-H⋯O inter-actions link the mol-ecules into a one-dimensional array along [010]. The crystal studied was an inversion twin, with a refined ratio for the twin ...

2012
Rajni Kant Seema Sahi Vivek K. Gupta Kamini Kapoor Satya Paul

In the title compound, C(14)H(12)ClNO(2), the mean plane through the amide group [-N-C=O-] forms dihedral angles of 27.55 (8) and 31.94 (7)° with the meth-oxy- and chloro-substituted benzene rings, respectively. The dihedral angle between the benzene rings is 59.24 (4)°. In the crystal, N-H⋯O and weak C-H⋯O hydrogen bonds link the mol-ecules into chains along the a axis.

2010
Johannes Dömer Tania Pape Ekkehardt Hahn

The benzene-o-dithiol/pyridylimine (S-S)/(N-N) ligand H2-7, representing the first example of a new type of bis(bidentate) heterodonor ligands with a mixed donor set, has been synthesized by Schiff base condensation of pyridine-2-carbaldehyde with an amine-substituted benzene-o-dithiol moiety. Bis(cyclopentadienyl)titanium dichloride reacts selectively at the S-S donor group of H2-7 to yield co...

2010
Jerry P. Jasinski Ray J. Butcher M. S. Siddegowda H. S. Yathirajan A. R. Ramesha

In the title mol-ecule, C(14)H(11)BrClNO(2), the dihedral angle between the mean planes of the bromo-substitued benzene and the chloro-substituted benzene rings is 1.8 (4) °. The nitro group is twisted by 15.8 (6)° from the mean plane of the benzene ring to which it is attached. The crystal packing is influenced by weak inter-molecular C-H⋯O inter-actions and weak π-π stacking inter-actions [ce...

Journal: :Journal of the American Chemical Society 2006
Marc Lafrance Keith Fagnou

A palladium-pivalic acid cocatalyst system has been developed that exhibits unprecedented reactivity in direct arylation. This reactivity is illustrated with the first examples of high yielding direct metalation-arylation reactions of a completely unactivated arene, benzene. Experimental and computational evidence indicates that the pivalate anion is a key component in the palladation/C-H bond ...

2010
Parna Gupta Soumik Mandal

The title compound, C(15)H(12)N(2)O(2)·3H(2)O, has been prepared from the reaction of a Schiff base of benzene-1,2-diamine and iron perchlorate at room temperature. The dihedral angle between the benzimidazole ring and the 4-substituted benzene ring is 0.47 (3)°. Hydrogen bonding involving water mol-ecules, imidazole N, imidazole imine H and ester O atoms stabilizes the crystal structure.

2016
Javier Ajenjo Martin Greenhall Camillo Zarantonello Petr Beier

3-Fluoro-5-nitro-1-(pentafluorosulfanyl)benzene was prepared by three different ways: as a byproduct of direct fluorination of 1,2-bis(3-nitrophenyl)disulfane, by direct fluorination of 4-nitro-1-(pentafluorosulfanyl)benzene, and by fluorodenitration of 3,5-dinitro-1-(pentafluorosulfanyl)benzene. The title compound was subjected to a nucleophilic aromatic substitution of the fluorine atom with ...

Journal: :Journal of Porous Materials 2022

Catalyst is the key for hydrodeoxygenation (HDO) of lignin derivatives to produce alkyl aromatics and cycloalkanes, components 100% sustainable aviation fuels (SAF). Mono bi-functional catalysts nickel (Ni) heterophosphotungstic acid (HPW) supported on SBA-15 carbons were prepared, characterized evaluated HDO derived trans-anethole. The structure was intact but its surface area pore volume decr...

2013
N. Selvakumaran R. Karvembu Seik Weng Ng Edward R. T. Tiekink

The title compound, C26H42N4O2S2, adopts a shallow U-shape as both pendant arms of the 1,3-substituted benzene ring are orientated in the same direction. The thione S atoms lie to the same side of the benzene ring and the carbonyl O atoms to the other. The most prominent feature of the crystal packing is the formation of inversion dimers mediated by N-H⋯S hydrogen bonds. One of the 2-methyl-pro...

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