One Pot Synthetic Method of New Keto Diphenyl Selenide Compounds

Abstract: A series of hitherto unreported mono-and di-keto diphenyl selenides have been efficiently synthesized in high yields by treatment of diphenyl selenide (1) with appropriately substituted acyl chloride using anhydrous aluminum chloride as catalyst and methylene chloride as solvent. The structures of the synthesized compounds have been confirmed by elemental and spectral analysis

Bis(4-acetyl­phen­yl) selenide

In the title compound, C16H14O2Se, the dihedral angle between the benzene rings is 87.08 (11)°. In the crystal, mol­ecules are linked into layers parallel to the bc plane by inter­molecular C—H⋯O hydrogen bonds

Cycloaddition Reaction of Ethyl Thioxoacetate and the Dienamine Derived from Pummerer's Ketone

The objective of this work is to study the regio- and stereochemistry of the cycloadducts obtained from the treatment of ethyl thioxoacetate and the dienamine derived from Pummerer's ketone

One Pot Synthetic Method of New Keto Diphenyl Selenide Compounds

A series of hitherto unreported mono- and di-keto diphenyl selenides have been efficiently synthesized in high yields by treatment of diphenyl selenide (1) with appropriately substituted acyl chloride using anhydrous aluminum chloride as catalyst and methylene chloride as solvent. The structures of the synthesized compounds have been confirmed by elemental and spectral analysis

Crystal structure of 1,1'-[selanediyl-bis(4,1-phenyl-ene)]bis-(2-chloro-ethan-1-one)

International audienceIn the title mol-ecule, C16H12Cl2O2Se, the C-Se-C angle is 100.05 (14)°, with the dihedral angle between the planes of the benzene rings being 69.92 (17)°. The average endocyclic angles (Se-Car-Car; ar = aromatic) facing the Se atom are 120.0 (3) and 119.4 (3)°. The Se atom is essentially coplanar with the benzene rings, with Se-Car-Car-Car torsion angles of -179.2 (3) and -179.7 (3)°. In the crystal, mol-ecules are linked via C-H⋯O hydrogen bonds forming chains propagating along the a-axis direction. The chains are linked via C-H⋯π inter-actions, forming a three-dimensional networ

Chemical composition of the essential oil of Haplophyllum tuberculatum (Forssk.) L.A. Juss. from Algeria

International audienceThe chemical composition of the essential oil of Haplophyllum tuberculatum (Forssk.) L. A. Juss. was analysed by GC and GC–MS, the identified components constituting 82.5% of the oil. The main constituents were -phellandrene (2.1%), -phellandrene (3.0%), terpinene-4-ol (3.2.%) , p-cymene-8-ol (2.9%), piperitone (17.8), 2,4-bis(1,1-dimethylethyl)-phenol (28.3%), (1E,4E)-germacrene B (2.1%), hexadec-1-ene (3.2%) andoctadec-1-ene (2.1%)

Chemical composition of the essential oil of Ononis angustissima (Lam.) Batt. et Trab

International audienceThe chemical composition of the essential oil of Ononis angustissima (Lam.) Batt. et Trab. was analysed by GC and GC–MS, the identified components constituting 78.8% of the oil. The main constituents were anethol (2.4%), alpha-copaene (2.4%), beta-selinene (2.7%), tridecan-2-one (2.2%), valencene (5.0%), alpha-muurolene (1.2%), gamma-cadinene (3.4%), delta-cadinene (5.0%), (E)-nerolidol (1.5%), 1,10-diepicubenol (3.1%), 10-epi-alpha-cadinol (4.1%), beta-eudesmol (7.5%), Z,Z-farnesol (8.8%), 6,10,14-trimethyl-pentadecan-2-one (3.0%), trans-phytol (17.4%). This essential oil was not previously investigated