244010-58-0

Upstream product

• 96-76-4 2,4-di-tert-Butylphenol 

Downstream Products

• 753452-70-9 [Cu(2,2'-selenobis(4,6-di-tert-butylphenolato)(benzylamine)]2*H₂O 

Relevant academic research and scientific papers

Manganese complexes of mixed O, X, O-donor ligands (X = S or Se): Synthesis, characterization and catalytic reactivity

Complexes of manganese with two tridentate ligands, H2L Se and H2LS, containing [O, Se, O] or [O, S, O]-donor atoms, respectively, are described. The bisphenolate ligands yield complexes [MnIII2

An efficient approach for the synthesis of functionalized selenoethers and selenacalix[4]thiophenes, {2,5-(μ-Se)(3,4-dialkoxythiophene)}4

An efficient method for the synthesis of selenoethers and selenacalix[4]thiophene utilizing SeCl2is described. Reactions of phenols with SeCl2produce the corresponding selenoethers in moderate to good yields. The selenacalix[4]thioph

Polynuclear nickel(II) complexes: Preparation and magnetic properties of NiII4, NiII5, and Ni II6 species with ligands containing O∩ X∩O (X = S, Se or N) donor atoms

A family of bisphenol-containing ligands with XO2 donor atoms, where X = S, Se, or N, yields [NiII]4 (1) and (2), [NiII]5 (3), and [NiII]6 (4) complexes. Complex 2, 3, and 4 have been structurally characterised by X-ray diffraction. The compounds were characterised spectroscopically and by variable-temperature (2-295K), variable-field (1, 4, and 7 T) magnetic susceptibility measurements. Analysis of the magnetic data shows predominant ferromagnetic interactions between the nickel centres (SNi = 1) indicating high-spin ground states for 1, 2, and 3, whereas complex 4 shows antiferromagnetic interactions. A plot of J vs. Ni-O-Ni angles for all structurally characterised Ni 4O4 cubane cores, including 2, irrespective of their symmetry, shows a large variation of J values within a small range of Ni-O-Ni angles. A simple two-J model was found to be adequate to describe the magnetic properties of the hexanuclear complex, 4. ( Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003).

ORGANODIARYL SELENOXIDES AND PROCESS FOR PREPARATION THEREOF

Novel organodiaryl selenoxides and processes for preparation thereof, and use thereof as ligand in complexes.

HETEROCYCLIC SELENAPHOSPHITES AND PROCESS FOR PREPARATION THEREOF

Novel heterocyclic selenaphosphites, process for preparation thereof and use thereof as ligand for employment in complexes.

HETEROCYCLIC SELENOPHOSPHITES AND METHOD FOR THE PREPARATION THEREOF

Novel heterocyclic selenophosphites, method for preparation thereof and use thereof as ligand unit for preparing ligands for use in complexes.

Solvent-Dependent Facile Synthesis of Diaryl Selenides and Biphenols Employing Selenium Dioxide

Biphenols are important structure motifs for ligand systems in organic catalysis and are therefore included in the category of so-called "privileged ligands". We have developed a new synthetic pathway to construct these structures by the use of selenium dioxide, a stable, powerful, and commercially available oxidizer. Our new, and easy to perform protocol gives rise to biphenols and diaryl selenides depending on the solvent employed. Oxidative treatment of phenols in acetic acid yields the corresponding biphenols, whereas conversion in pyridine results in the preferred formation of diaryl selenides. As a consequence, we were able to isolate a broad scope of novel diaryl selenides, which could act as pincer-like ligands with further applications in organic synthesis or as ligands in transition metal catalysis.

PROCESS FOR PREPARING 2,2'-SELENOBIARYL ETHERS OR 4,4'-SELENOBIARYL ETHERS USING SELENIUM DIOXIDE

A process for preparing a 2,2′-selenobiaryl ether or a 4,4′-selenobiaryl ether, proceeds by a) adding a first phenol to the reaction mixture, b) adding a second phenol to the reaction mixture, c) adding selenium dioxide to the reaction mixture, d) adding a base having a pKb in the range from 8 to 11 to the reaction mixture, and e) adjusting the reaction temperature of the reaction mixture such that the first phenol and the second phenol are converted to said 2,2′-selenobiaryl ether or said 4,4′-selenobiaryl ether.