41923-50-6

Upstream product

• 673-41-6 p-chlorobenzenediazonium tetrafluoroborate 
• 34220-01-4 di-(4-chlorophenyl)iodonium chloride 
• 106-47-8 4-chloro-aniline 
• 77443-92-6 Di(p-chlorophenyl)-N-benzylsulfonyltellurimide 
• 123-31-9 hydroquinone 
• 32176-40-2 dichloro-bis-(4-chloro-phenyl)-λ⁴-tellane 
• 36062-86-9 1,2-bis(4-chlorophenyl)ditelluride 
• 1679-18-1 4-Chlorophenylboronic acid 
• 637-87-6 1-Chloro-4-iodobenzene 
• 77443-97-1 di(p-chlorophenyl) telluroxide 
• 103-30-0 (E)-1,2-diphenyl-ethene 
• 63971-87-9 dibromo-bis-(4-chloro-phenyl)-λ⁴-tellane 

Downstream Products

• 103-30-0 (E)-1,2-diphenyl-ethene 
• 63971-87-9 dibromo-bis-(4-chloro-phenyl)-λ⁴-tellane 
• 112545-94-5 1-chloro-4-(1-hexynyl)benzene 
• 5172-02-1 1-chloro-4-(2-phenylethynyl)benzene 
• 2050-68-2 4,4'-dichlorobiphenyl 
• 58919-66-7 Di--tellurium-dijodid 
• 32176-40-2 dichloro-bis-(4-chloro-phenyl)-λ⁴-tellane 

Relevant academic research and scientific papers

Rongalite-Promoted on Water Synthesis of Functionalised Tellurides and Ditellurides

The on water reaction of sodium telluride with electrophiles has been explored. Na2Te, generated in situ through the rongalite (sodium hydroxymethanesulfinate)-promoted reduction of elemental tellurium, reacts with a wide variety of electrophil

Carbon-carbon bond forming reactions via Pd-catalyzed detellurative homocoupling of diorganyl tellurides

A simple and highly efficient method for the constructions of Csp-Csp, Csp2-Csp2 and Csp3-Csp3 bonds is reported. The symmetrical diaryl tellurides undergo detellurative homocouplings to afford symmetrical biaryl products. The reactions are carried out at ambient temperature using PdCl2 as a catalyst in the presence of Ag2O and Na2CO3. Similarly, the detellurative homocouplings of dibenzyl telluride and bis(phenylethynyl)telluride give bibenzyl and the conjugated diyne, respectively.

Diarylation of chalcogen elements using arylboronic acids via copper- or palladium-catalyzed oxidative coupling

Transition metal-catalyzed diarylations of sulfur, selenium and tellurium were achieved using arylboronic acids in air. A copper-catalyzed reaction of sulfur or selenium efficiently yielded numerous symmetrical diaryl sulfides or selenides in the presence of NH4BF4. However, the diarylation of tellurium was not possible using this method, and required a palladium catalyst in the presence of KI and air for the reaction to proceed.

Catalyst free one-pot synthesis of symmetrical diaryl tellurides with Te0/KOH

A highly efficient new protocol for C-Te bond formation leading to symmetrical diaryl tellurides has been developed. The synthesis employed aryl iodides and elemental tellurium as starting materials in the presence of KOH. It is a one-pot reaction without using any catalyst. Utilizing this new protocol, a variety of aryl and heteroaryl iodides are reacted with elemental tellurium to afford the corresponding diaryl tellurides in good to excellent yields.

Negishi cross-coupling of organotellurium compounds: Synthesis of biaryls, aryl-, and diaryl acetylenes

A functional group tolerant palladium-catalyzed Negishi coupling of diaryl tellurides with organozinc has been developed. This methodology permits efficient preparation of biaryls, aryl acetylenes and diaryl acetylenes in moderate to good yields. A preliminary study to gain further insight into the reaction was performed using in situ ReactIR technology.

Deoxygenation of sulfoxides, selenoxides, telluroxides, sulfones, selenones and tellurones with Mg-MeOH

The deoxygenation of a variety of sulfoxides, selenoxides, telluroxides, sulfones, selenones and tellurones has been reported with Mg-MeOH at room temperature in nearly quantitative yields. The deoxygenation is proposed to proceed by SET from Mg to the substrate.

Debrominations of vic-Dibromides with Diorganotellurides. 1. Stereoselectivity, Relative Rates, and Mechanistic Implications

Debrominations of vic-dibromides with diaryl tellurides 1-4 and di-n-hexyl telluride (9) are described. A mechanistic explanation of the debromination is offered which accounts for several key experimental observations: (1) the reaction is highly stereoselective with erythro-dibromides giving trans-olefins and threo-dibromides giving cis-olefins, (2) the reaction is accelerated by more electron-rich diorganotellurides, (3) the reaction is accelerated in a more polar solvent, (4) the reaction is accelerated by the addition of carbocation-stabilizing substituents to the carbons bearing the bromo substituents, and (5) erythro-dibromides are much more reactive than threo-dibromides. It is proposed that bromonium ion formation from the vic-dibromide is slow and rate-determining. Bromonium ion formation is followed by rapid scavenging of "Br-" by the diorganotelluride. The bromonium ion formation provides stereoselectivity and eclipsing interactions lower the reactivity of threo-dibromides. No intermediate species were observed by 1H NMR.

Reduction of diaryltellurium dichlorides with samarium diiodide

Samarium diiodide reduces diaryltellurium dichlorides to the corresponding diaryl tellurides in moderate to good yields under mild and neutral conditions.

Convenient synthesis of diaryl tellurides

Diaryl tellurides 5 are prepared by two synthetic routes: a) a one-pot procedure using elemental tellurium (1), diethyl phosphite (2) and sodium hydride in ethanol, followed by treatment with arenediazonium fluoroborates 4; b) treatment of sodium telluride (6) with arenediazonium fluoroborates 4 in dimethylformamide. In both cases, good yields are obtained.