56950-00-6

Upstream product

• 1202-36-4 diphenyl telluride 
• 64109-08-6 tetrakis-(4-methylphenyl)tellurium 
• 32294-57-8 bis(4-methylphenyl)ditelluride 
• 1224-13-1 triphenyltelluronium chloride 
• 32294-60-3 diphenyl ditelluride 
• 459-44-9 4-methylbenzenediazonium tetrafluoroborate 
• 98-80-6 phenylboronic acid 
• 603-33-8 triphenylbismuthane 
• 195062-57-8 p-tolylboronic pinacol ester 
• 106-38-7 para-bromotoluene 
• 5720-05-8 4-methylphenylboronic acid 
• 64109-07-5 tetraphenyl tellurium 
• 33604-67-0 (4-methylphenyl)azo 4-methylphenyl sulfone 
• 52251-60-2 benzenetellurolate lithium salt 

Downstream Products

• 37438-09-8 phenyl 4-methylphenyltellurium dichloride 
• 84438-45-9 phenyl-p-tolyl-tellurium oxide 
• 56960-25-9 dibromo-phenyl-p-tolyl-λ⁴-tellane 

Relevant academic research and scientific papers

C-Te Cross-Coupling of Diaryl Ditellurides with Arylboronic Acids by Using Copper(I) Thiophene-2-carboxylate under Mild Conditions

We describe the successful cross-coupling of diaryl ditellurides with arylboronic acids by using copper(I) thiophene-2-carboxylate (CuTC) under mild conditions. Although other studies have reported that highly polar solvents (such as DMSO) or bases are required, this reaction was completed by using CuTC and common solvents under neutral conditions at room temperature. This cross-coupling reaction was performed with diaryl ditellurides and arylboronic acids bearing various groups, affording the corresponding diaryl tellurides in good to excellent yields.

Synthesis of symmetrical and unsymmetrical tellurides via silver catalysis

We describe here a simple and efficient methodology for the cross-coupling reaction of diaryl ditellurides with aryl boronic acids catalyzed by AgNO3. The general applicability and wide substrate scope make this an interesting method for the synthesis of a series of symmetrical and unsymmetrical diaryl tellurides. This silver-catalyzed protocol tolerates a variety of diaryl ditellurides as well as aryl boronic acids by using only 10 mol% of AgNO3 to provide the desired products in high yields. The reaction mechanism was proposed after high resolution mass spectrometry analysis and the active (PhTe)2AgIII intermediate could be detected.

Synthesis of Unsymmetrical Diaryl Selenides: Copper-Catalyzed Se-Arylation of Diaryl Diselenides with Triarylbismuthanes

Copper-catalyzed C(aryl)-Se bond formation by the reaction of diaryl diselenides with triarylbismuthanes in the presence of copper(I) acetate (10 mol%) and 1,10-phenanthroline (10 mol%) under aerobic conditions led to the formation of unsymmetric diaryl s

A convenient and efficient copper-catalyzed synthesis of unsymmetrical and symmetrical diaryl chalcogenides from arylboronic acids in ethanol at room temperature

A simple and convenient approach for the synthesis of unsymmetrical diaryl chalcogenides (Te, Se, and S) has been developed by copper-catalyzed cross-coupling reaction of organoboronic acid with diaryl dichalcogenide in ethanol using NaBH4 in air or oxygen. The present methodology is highly practical for the synthesis of unsymmetrical diaryl tellurides with various functionalities such as -NO2, -F, -Br, and -COOH that have been obtained in good to excellent yields. Methodology is also effective for the synthesis of unsymmetrical diaryl selenides and sulfides. Moreover, symmetrical diaryl selenides have also been obtained from arylboronic acids using elemental selenium powder under optimized reaction conditions. The use of NaBH 4 is the key for the development of milder reaction conditions, which enable the construction of unsymmetrical diaryl chalcogenides from boronic acid substrates in ethanol at room temperature.

Ultrasound-assisted, transition-metal-free synthesis of diaryl tellurides from aryl boronic acids: A possible free-radical mechanism

The first rapid, catalyst-free synthesis of diphenyl tellurides from readily available diphenyl ditelluride and aryl boronic acids is reported. The high efficiency, general applicability and wide substrate scope, including heterocycles and other functional groups, make this method superior. The technique, which utilizes dimethyl sulfoxide solvent and ultrasound promotion, opens the door for the synthesis of diphenyl tellurides at 100 °C in air within a short time in high yields. Georg Thieme Verlag Stuttgart New York.

A general and green procedure for the synthesis of organochalcogenides by CuFe2O4 nanoparticle catalysed coupling of organoboronic acids and dichalcogenides in PEG-400

A general and efficient procedure has been developed for the synthesis of organochalcogenides (selenides and tellurides) by a simple reaction of organoboronic acids and dichalcogenides catalysed by CuFe2O 4 nanoparticles in PEG-400 without any ligand. This protocol offers the scope for access to a wide spectrum of chalcogenides including diaryl, aryl-heteroaryl, aryl-styrenyl, aryl-alkenyl, aryl-allyl, aryl-alkyl and aryl-alkynyl versions. The catalyst is magnetically separable and recyclable eight times without any loss of appreciable catalytic activity. The products are obtained in high purities after evaporation of solvent followed by filtration column chromatography. The Royal Society of Chemistry.

Microwave-assisted reaction of aryl diazonium fluoroborate and diaryl dichalcogenides in dimethyl carbonate: A general procedure for the synthesis of unsymmetrical diaryl chalcogenides

A convenient, general and efficient procedure for the synthesis of unsymmetrical diaryl chalcogenides has been developed by the reaction of aryl diazonium fluoroborates and diaryl dichalcogenides in the presence of zinc dust in dimethyl carbonate under microwave irradiation. The reactions of a wide range of substituted aryl diazonium fluoroborates and diaryl dichalcogenides have been addressed. The zinc dust is required for the cleavage of diaryl dichalcogenides. The products are obtained in high purity after fast column chromatography of the crude residue after evaporation of dimethyl carbonate. The Royal Society of Chemistry 2012.

Convenient synthesis of unsymmetrical organochalcogenides using organoboronic acids with dichalcogenides via cleavage of the S-S, Se-Se, or Te-Te bond by a copper catalyst

(Chemical Equation Presented) This article describes the methodology for a copper-catalyzed preparation of numerous monochalcogenides from dichalcogenides with organoboronic acids. Unsymmetrical diorgano-monosulfides, selenides, and tellurides can be synthesized by the coupling of dichalcogenides with aryl- or alkylboronic acids using a copper catalyst in air. The present reaction can take advantage of both organochalcogenide groups on dichalcogenide.

Microwave-assisted copper-catalyzed preparation of diaryl chalcogenides

Diaryl chalcogenide synthesis employing diaryl dichalcogenides and aryl halides as starting materials in the presence of excess magnesium and a catalytic amount of CuI/bipyridyl is significantly improved by microwave heating. Reaction times can be reduced from 2 to 3 days to 6-8 h. Both aryl bromides and aryl chlorides can be used as substrates in the substitution reaction. The procedure is useful not only for diaryl sulfide and diaryl selenide synthesis but also for the preparation of unsymmetrical diaryl tellurides. Starting from suitable aryl halides, the novel microwave-assisted procedure was used for the facile preparation of novel chalcogen analogues (PhS-, PhSe-, and PhTe-) of various antioxidants (ethoxyquin and 3-pyridinol). Attempts to use dialkyl dichalcogenides for the coupling of alkylchalcogeno moieties to aryl halides were only successful in the case of long-chain (such as n-octyl) disulfides and diselenides.

A simple copper salt-catalyzed synthesis of unsymmetrical diaryl selenides and tellurides from arylboronic acids with diphenyl diselenide and ditelluride

In the presence of a catalytic amount of simple copper salt, the reaction of arylboronic acids with diphenyl diselenide and ditelluride was accomplished without any additive to afford the corresponding unsymmetrical diarylselenides and tellurides in good yields. Georg Thieme Verlag Stuttgart.