scholarly journals 1,6-Diacetyl-2-isopropyl-4,7-dimethylnaphthalene

IUCrData ◽  
2016 ◽  
Vol 1 (4) ◽  
Author(s):  
Ahmed Benharref ◽  
Abdelouhed Oukhrib ◽  
Mustapha Ait Elhad ◽  
Lahcen El Ammari ◽  
Mohamed Saadi ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Essential Oil ◽  
Title Compound ◽  
Cedrus Atlantica ◽  
Compound C

The title compound, C19H22O2, was synthesized in three steps from a mixture of α-, β- and γ-himachalene, which was isolated from an essential oil of the Atlas cedar (Cedrus atlantica). In the crystal, molecules are linked by C—H...O hydrogen bonds into chains running parallel to thebaxis.

scholarly journals (1S,3R,8R,11S)-2,2,11-Tribromo-10-bromomethyl-3,7,7-trimethyltricyclo[6.4.0.01,3]dodec-9-ene

IUCrData ◽  
2016 ◽  
Vol 1 (5) ◽  
Author(s):  
Abdoullah Bimoussa ◽  
Aziz Auhmani ◽  
My Youssef Ait Itto ◽  
Jean-Claude Daran ◽  
Abdelwahed Auhmani
Keyword(s):  
Hydrogen Bonds ◽  
Essential Oil ◽  
Absolute Configuration ◽  
Title Compound ◽  
Resonant Scattering ◽  
Cedrus Atlantica ◽  
Compound C ◽  
The Absolute

The title compound, C16H22Br4, was synthesized in two steps from β-himachalene, which was isolated from essential oil of the Atlas cedar (cedrus atlantica). It is built up from three fused rings, a seven-membered heptane ring, a six-membered cyclohexyl ring bearing both a bromine and a bromomethyl substituent, and a three-membered propane ring bearing two Br atoms. In the crystal, molecules are linked by C—H...Br hydrogen bonds, forming chains propagating along [001]. The absolute configuration was deduced from the chemical pathway and confirmed by resonant scattering [Flack parameter = 0.012 (10)].

scholarly journals 6-Bromo-2-(1,4-dibromo-4-methylcyclohexyl)-6-methylheptan-4-one

IUCrData ◽  
2017 ◽  
Vol 2 (11) ◽  
Author(s):  
Ahmed Benharref ◽  
Noureddine Mazoir ◽  
Mustapha Ait Elhad ◽  
Jean-Claude Daran ◽  
Moha Berraho
Keyword(s):  
Hydrogen Bonds ◽  
Essential Oil ◽  
Title Compound ◽  
Chair Conformation ◽  
Cyclohexane Ring ◽  
Cedrus Atlantica ◽  
Compound C ◽  
One Step

The title compound, C15H25Br3O, was synthesized in one step from a mixture of α-atlantone [2-methyl-6-(4-methylcyclohex-3-en-1-yl)hepta-2,5-dien-4-one] and γ-atlantone [2-methyl-6-(4-methylcyclohex-3-en-1-ylidene)hept-2-en-4-one], which were isolated from an essential oil of the Atlas cedar (Cedrus Atlantica). The molecule is built up from the bromo ethyl cyclohexane ring, which has a substituent bromomethylhexanone group. The cyclohexane ring adopts a chair conformation. In the crystal, molecules are linked by C—H...O hydrogen bonds, forming zigzag chains parallel to [100].

scholarly journals N′-[(1S,3R,8R)-2,2-Dichloro-3,7,7,10-tetramethyltricyclo[6.4.0.01,3]dodecan-11-yl]acetohydrazide

IUCrData ◽  
2016 ◽  
Vol 1 (4) ◽  
Author(s):  
Ahmed Benharref ◽  
Abdelouhed Oukhrib ◽  
Mustapha Ait Elhad ◽  
Jean-Claude Daran ◽  
Moha Berraho
Keyword(s):  
Hydrogen Bonds ◽  
Essential Oil ◽  
Title Compound ◽  
Membered Ring ◽  
Asymmetric Unit ◽  
Cedrus Atlantica ◽  
Compound C ◽  
The Mean ◽  
Independent Molecules

The title compound, C18H26Cl2N2O, was synthesized in four steps from β-himachalene (3,5,5,9-tetramethyl-2,4a,5,6,7,8-hexahydro-1H-benzocycloheptene), which was isolated from an essential oil of the Atlas cedar (Cedrus atlantica). It crystallizes with two independent molecules in the asymmetric unit. Each molecule is built up from fused six- and seven-membered rings and an appended three-membered ring. An acetylhydrazone substituent is attached to the six-membered ring. In both molecules the six-membered rings display half-chair conformations, whereas the seven-membered rings have boat conformations. In the two molecules, the mean planes of the two rings are inclined to one another by 59.9 (3) and 59.1 (3)°. In the crystal, the two molecules are linkedviaN—H...O hydrogen bonds, forming dimers with anR22(8) loop. Within the dimer there are also C—H...O hydrogen bonds present. The dimers are linkedviaC—H...Cl hydrogen bonds, forming slabs parallel to theabplane.

scholarly journals (1R,4R,6S,7S)-5,5-Dichloro-1,4,8,8-tetramethyltricyclo[5.4.11,7.04,6]dodecan-12-one

2013 ◽  
Vol 69 (11) ◽  
pp. o1703-o1703 ◽  
Author(s):  
Ahmed Benharref ◽  
Jamal EL Karroumi ◽  
Jean-Claude Daran ◽  
Moha Berraho
Keyword(s):  
Essential Oil ◽  
Title Compound ◽  
Membered Ring ◽  
Dihedral Angles ◽  
Asymmetric Unit ◽  
Cedrus Atlantica ◽  
Compound C ◽  
The Mean ◽  
Independent Molecules

The title compound, C16H24Cl2O, was synthesized in three steps from β-himachalene (3,5,5,9-tetramethyl-2,4a,5,6,7,8-hexahydro-1H-benzocycloheptene), which was isolated from essential oil of the Atlas cedar (cedrus atlantica). The asymmetric unit contains two independent molecules with similar conformations. Each molecule is built up from two fused seven-membered rings and an additional three-membered ring arising from the reaction of himachalene with dichlorocarbene. The dihedral angles between the mean planes of the two seven-membered rings are 75.03 (9) and 75.02 (9)° in the two independent molecules.

scholarly journals (1S,2R,3S,6S,7R)-3,7,11,11-Tetramethyl-6,7-epoxybicyclo[5.4.0]undecane-2-ol

2014 ◽  
Vol 70 (5) ◽  
pp. o595-o595
Author(s):  
Mohamed Loubidi ◽  
Ahmed Benharref ◽  
Lahcen El Ammari ◽  
Mohamed Saadi ◽  
Moha Berraho
Keyword(s):  
Hydrogen Bonds ◽  
Title Compound ◽  
Membered Ring ◽  
Boat Conformation ◽  
Axis Direction ◽  
Cedrus Atlantica ◽  
Compound C ◽  
Twist Boat

The title compound, C15H26O2, was synthesized from β-himachalene (3,5,5,9-tetramethyl-2,4a,5,6,7,8-hexahydro-1H-benzocycloheptene), which was isolated from the Atlas cedar (cedrus atlantica). The molecule is built up from a seven-membered ring to which a six- and a three-membered ring are fused. The seven- and six-membered rings each have a twist-boat conformation. In the crystal, O—H...O hydrogen bonds link the molecules into zigzag chains running along theb-axis direction.

scholarly journals N-[4-Acetyl-5-(2-methylprop-1-enyl)-5-(2-p-tolylpropyl)-4,5-dihydro-1,3,4-thiadiazol-2-yl]acetamide

2009 ◽  
Vol 65 (6) ◽  
pp. o1269-o1270 ◽  
Author(s):  
Noureddine Mazoir ◽  
Lahcen El Ammari ◽  
Nouzha Bouhmaida ◽  
Slimane Dahaoui ◽  
Ahmed Benharref ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Essential Oil ◽  
Benzene Ring ◽  
Dihedral Angle ◽  
Heterocyclic Compound ◽  
Maximum Deviation ◽  
Cedrus Atlantica ◽  
Compound C ◽  
Thiadiazole Ring

The title heterocyclic compound, C20H27N3O2S, was synthesized from 2-(4-methylcyclohex-3-enyl)-6-methylhepta-2,5-dien-4-one, which was isolated from the essential oilCedrus atlantica. The thiadiazole ring is essentially planar [maximum deviation 0.006 (2) Å] and it forms a dihedral angle of 18.08 (9)° with the benzene ring. The dihedral angle between the thiadiazole ring and the acetamide plane is 7.62 (10)°. In the crystal, molecules are linked into chains running along thecaxis by intermolecular N—H...O hydrogen bonds.

scholarly journals (1S,3R,8R,9S,11R)-2,2,10,10-Tetrachloro-3,7,7,11-tetramethyltetracyclo[6.5.0.01,3.09,11]tridecane

2013 ◽  
Vol 69 (2) ◽  
pp. o275-o275 ◽  
Author(s):  
Najia Ourhriss ◽  
Ahmed Benharref ◽  
Mohamed Saadi ◽  
Lahcen El Ammari ◽  
Moha Berraho
Keyword(s):  
Essential Oil ◽  
Title Compound ◽  
Chair Conformation ◽  
Membered Ring ◽  
Boat Conformation ◽  
Cedrus Atlantica ◽  
Compound C

The title compound, C17H24Cl4, was synthesized from β-himachalene (3,5,5,9-tetramethyl-2,4a,5,6,7,8-hexahydro-1H-benzocycloheptene), which was isolated from the essential oil of the Atlas cedar (Cedrus Atlantica). The molecule is built up from fused six- and seven-membered rings and two three-membered rings from the reaction of β-himachalene with dichlorocarbene. The six-membered ring shows a chair conformation, whereas the seven-membered ring displays a boat conformation.

scholarly journals 1-Isopropyl-4,7-dimethyl-2,8-dinitronaphthalene

2012 ◽  
Vol 68 (6) ◽  
pp. o1893-o1893 ◽  
Author(s):  
Mouna Chakkar ◽  
Najia Oughris ◽  
Ahmed Benharref ◽  
Jean-Claude Daran ◽  
Moha Berraho
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Nitro Group ◽  
Title Compound ◽  
Site Occupancy ◽  
Asymmetric Unit ◽  
Cedrus Atlantica ◽  
Compound C ◽  
Independent Molecules

The title compound, C15H16N2O4, was synthesized from a mixture of α-himachalene (2-methylene-6,6,9-trimethylbicyclo[5.4.O1,7]undec-8-ene) and β-himachalene (2,6,6,9-tetramethylbicyclo[5.4.01,7]undeca-1,8-diene) which were isolated from an oil of the Atlas cedar (Cedrus atlantica). The asymmetric unit contains two independent molecules. In each of the two molecules, two O atoms of one nitro group are disordered over two sets of sites with site-occupancy factors of 0.636 (5):0.364 (5) and 0.832 (5):0.168 (5). The crystal structure features weak C—H...O hydrogen bonds.

scholarly journals (1S,3R,8R,9S,10R)-2,2-Dichloro-3,7,7,10-tetramethyltricyclo[6.4.0.01,3]dodecan-9-yl 4-methylbenzene-1-sulfonate

IUCrData ◽  
2016 ◽  
Vol 1 (4) ◽  
Author(s):  
Ahmed Benharref ◽  
Lahcen El Ammari ◽  
Mohamed Saadi ◽  
Abdelouahd Oukhrib ◽  
Moha Berraho
Keyword(s):  
Essential Oil ◽  
Dihedral Angle ◽  
Title Compound ◽  
Anomalous Dispersion ◽  
Cedrus Atlantica ◽  
Compound C ◽  
Dispersion Effects ◽  
The Mean ◽  
The Absolute ◽  
Absolute Structure

The title compound, C23H31Cl2O3S, was synthesized in three steps from β-himachalene (3,5,5,9-tetramethyl-2,4a,5,6,7,8-hexahydro-1H-benzocycloheptene), which was isolated from essential oil of the Atlas cedar (Cedrus atlantica). The fused six- and seven-membered rings have boat conformations: the dihedral angle between the mean planes of the rings is 88.03 (12)%. The absolute structure was established unambiguously from anomalous dispersion effects. There are no directional interactions in the crystal.

scholarly journals 6-Methyl-1-(nitromethyl)-4-(propan-2-yl)naphthalene

IUCrData ◽  
2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Mohamed Dakir ◽  
Ahmed Benharref ◽  
Lahcen El Ammari ◽  
Mohamed Saadi ◽  
Abdelouahd Oukhrib ◽  
...  
Keyword(s):  
Essential Oil ◽  
Nitro Group ◽  
Title Compound ◽  
Dihedral Angles ◽  
Isopropyl Group ◽  
Π Interactions ◽  
Cedrus Atlantica ◽  
Compound C ◽  
The Mean

The title compound, C15H17NO2, was synthesized in two steps from a mixture of α-himachalene (2-methylene-6,6,9-trimethylbicyclo[5.4.01,7]undec-8-ene), β-himachalene (2,6,6,9-tetramethylbicyclo[5.4.01,7]undeca-1,8-diene) and γ-himachalene (2,6,6,9-tetramethylbicyclo[5.4.01,7]undeca-2,8-diene), which was isolated from an essential oil of the Atlas cedar (Cedrus atlantica). The nitro group and the isopropyl group lie almost normal to the mean plane of the naphthalene moiety, making dihedral angles of 83.13 (19) and 71.72 (16)°, respectively, and are inclined to one another by 49.8 (2)°. In the crystal, molecules are linked by pairs of C—H...π interactions and weak C—H...O interactions.

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