627-54-3

Usage

Uses

Used in Organic Synthesis:
Tellurium diethyl is utilized as a reagent in organic synthesis for its ability to facilitate various chemical reactions. Its high reactivity makes it a valuable component in the synthesis of complex organic molecules.
Used as a Catalyst:
In the Chemical Industry, tellurium diethyl is employed as a catalyst to accelerate chemical reactions, enhancing the efficiency and speed of processes in the production of various chemicals and materials.
Given the highly reactive and toxic nature of tellurium diethyl, it is crucial to implement stringent safety protocols in its applications to minimize health and environmental risks.

InChI:InChI=1/C4H10Te/c1-3-5-4-2/h3-4H2,1-2H3

Synthetic route

ethyl iodide (75-03-6) → diethyl telluride (627-54-3)

Conditions	Yield
With potassium hydroxide; tellurium; hydrazine hydrate at 60 - 70℃;	93%

ethyl bromide (74-96-4) → diethyl telluride (627-54-3)

Conditions	Yield
With lithium telluride In tetrahydrofuran	85%
With sodium hydroxide; tellurium; hydrazine hydrate In N,N-dimethyl-formamide at 60℃; for 0.5h;	68%
With tellurium; cetyltrimethylammonim bromide; N,N'-bis[3-(triethylsilyl)propyl]thiocarbamide S,S-dioxide In tetrahydrofuran; sodium hydroxide for 1h; Heating;

C2H5X → diethyl telluride (627-54-3)

Conditions	Yield
With tellurium; naphthalene; sodium In tetrahydrofuran at 0℃; for 0.5h;	85%

ethyl bromide (74-96-4) + acetylene (74-86-2) → diethyl telluride (627-54-3) + divinyltellane (63000-06-6) + vinyl ethyl telluride (100004-54-4)

Conditions	Yield
With potassium hydroxide; tellurium; tin(ll) chloride In water at 105 - 115℃; under 6080 - 11400 Torr; for 5h;	A 6% B 55% C 69%
With potassium hydroxide; tellurium; tin(ll) chloride In water at 105 - 115℃; under 11400 Torr; for 5h;	A 6% B 55% C 69%
With potassium hydroxide; tellurium; tin(ll) chloride; acetylene In water at 105 - 115℃; under 6080 - 11400 Torr; for 5h;	A 10% B 26% C 35%

1,1-dichloroethane (75-34-3) → diethyl telluride (627-54-3) + diethyl ditelluride (26105-63-5)

Conditions	Yield
With tellurium; hydrazine hydrate; potassium hydroxide at 30 - 35℃; for 9h;	A 8% B 64%

ammonium O,O-diethyldithiophosphate (1068-22-0) + triethyltelluronium iodide (104746-44-3) + silver nitrate → Et3TeAg4I5 (113273-48-6) + diethyl telluride (627-54-3) + O,O,S-triethyl phosphorodithioate (2524-09-6)

Conditions	Yield
In water The silver salt of O,O-diethyl dithiophosphate was prepared from equimolar aq. solns. of AgNO3 and NH4(1+){S2P(OEt)2}(1-) and reacted in situ with an aq. soln. of Et3TeI. The react. mixt. was wartmed up to 70°C for ca. 3 h.; React. mixt. cooled to room temp., Et3TeAg4I5 extd. with CH2Cl2 and pptd. with CHCl3; elem.anal.; Et2Te and EtSP(S)(OEt)2 detected in the extn. residue by MS.;	A 50% B n/a C n/a

(C2H5)2Zn + (C2H5)3TeCl → diethyl telluride (627-54-3)

Conditions	Yield
at 100 - 110℃;

(C2H5)2Zn + (C2H5)3TeI → diethyl telluride (627-54-3)

Conditions	Yield
at 100 - 110℃;

ethyl bromide (74-96-4) → Diethyl disulfide (110-81-6) + diethyl telluride (627-54-3) + diethyl ditelluride (26105-63-5) + C4H10STe

Conditions	Yield
With sodium hydroxide; tellurium; sulfur; hydrazine hydrate In water at 35℃; Further byproducts given;	A 21.3 % Chromat. B 4.7 % Chromat. C 37.2 % Chromat. D 5.0 % Chromat.

ethyl bromide (74-96-4) → diethyl diselenide (628-39-7) + diethyl telluride (627-54-3) + diethyl ditelluride (26105-63-5) + C4H10SeTe

Conditions	Yield
With sodium hydroxide; tellurium; sulfur; hydrazine hydrate In water at 35℃; Further byproducts given;	A 43.7 % Chromat. B 3.5 % Chromat. C 30.3 % Chromat. D 1.03 % Chromat.

C6H15Al*C9H21N + tellurium tetrachloride (10026-07-0) → C11H26N(1+)*Cl(1-) + C9H21N*AlCl3 + diethyl telluride (627-54-3)

Conditions	Yield
at 40℃; for 3h;

ethyl bromide (74-96-4) + dichloromethane (75-09-2) → diethyl telluride (627-54-3) + diethyl ditelluride (26105-63-5) + 2,4-ditellurahexane (1238227-52-5) + methyl ethyl telluride

Conditions	Yield
Stage #1: dichloromethane With dipotassium telluride; hydrazine hydrate; potassium hydroxide at 20 - 42℃; Stage #2: ethyl bromide at 20 - 38℃;	A 20 %Chromat. B 8 %Chromat. C 8 %Chromat. D 39 %Chromat.

[Me2Si(Nt-Bu2)Ge{TeEt}2] → diethyl telluride (627-54-3) + [Me2Si(Nt-Bu2)GeTe]2 (157946-48-0)

Conditions	Yield
In benzene-d6 for 72h;

diethyl telluride (627-54-3) + (η-cyclopentadienyl)2(μ-carbonyl)(μ-η2-CF3C2CF3)dirhodium → [(η(5)-C5H5)2Rh2(CO)(μ-η(1):η(1)-CF3C2CF3)(TeEt2)] (253685-99-3)

Conditions	Yield
In dichloromethane stirring (30 min); evapn., chromy. (CH2Cl2 / hexane = 1 : 1), extg. (CH2Cl2), evapn.; elem.anal.;	100%

diethyl telluride (627-54-3) + nickel(II) bis(chlorosulfate) → {nickel(II) bis(chlorosulfate) bis(diethyl telluride)}

Conditions	Yield
In acetonitrile slow addn. of soln. of Ni(SO3Cl)2 in CH3CN to soln. of diethyl telluride in CH3CN under dry N2; stirring magnetically in closed vessel for about 10 h; pptn.;; filtration; washing several times with CH3CN followed by dry Et2O; drying in vac.; elem. anal.;;	87%

benzylpentacarbonylmanganese + diethyl telluride (627-54-3) → Mn(CO)4(CH2C6H5)(Te(CH2CH3)2) (159125-33-4)

Conditions	Yield
In pentane refluxed under Ar for 1 wk; filtered, removal of solvent in vac., chromy. on alumina (pentane), removal of solvent; elem. anal.;	87%

diethyl telluride (627-54-3) + copper(l) chloride → (C2H5)2Te*CuCl

Conditions	Yield
With HCl In hydrogenchloride; ethanol a soln. of CuCl in dil. HCl was mixed with a soln. of Et2Te in 95% EtOH; ppt. was filtered, washed with EtOH, dried in vacuo, addnl. amts. of the compound sepd. from the filtrate on keeping it overnight; elem. anal.;	75%

diethyl telluride (627-54-3) + copper(II) bis(chlorosulfate) → {copper(II) bis(chlorosulfate) bis(diethyl telluride)}

Conditions	Yield
In acetonitrile slow addn. of soln. of Cu(SO3Cl)2 in CH3CN to soln. of diethyl telluride in CH3CN under dry N2; stirring magnetically in closed vessel for about 10 h; pptn.;; filtration; washing several times with CH3CN followed by dry Et2O; drying in vac.; elem. anal.;;	72%

dicobalt octacarbonyl (15226-74-1, 61091-28-9, 61117-58-6) + triiron dodecarbonyl (17685-52-8) + diethyl telluride (627-54-3) → TeCo2Fe(CO)9

Conditions	Yield
High Pressure; high CO pressure;	30%

diethyl telluride (627-54-3) → diethyl-tellurium oxide (83543-05-9)

Conditions	Yield
With nitric acid das salpetersaure Salz entsteht;

diethyl telluride (627-54-3) + ethyl iodide (75-03-6) → triethyltelluronium; iodide (104746-44-3)

diethyl telluride (627-54-3) + methyl iodide (74-88-4) → diethyl-methyl-telluronium; iodide

o-tetrachloroquinone (2435-53-2) + diethyl telluride (627-54-3) → 4,5,6,7-Tetrachloro-2,2-diethyl-2λ4-benzo[1,3,2]dioxatellurole (145593-02-8)

Conditions	Yield
In toluene at -78℃; for 2h; Yield given;

diethyl telluride (627-54-3) + 3,5-di-tert-butyl-o-benzoquinone (3383-21-9) → 4,6-Di-tert-butyl-2,2-diethyl-2λ4-benzo[1,3,2]dioxatellurole (145593-04-0)

Conditions	Yield
In toluene at -78℃; for 2h; Mechanism; one-electron transfer reaction; also with elemental tellurium and other orthobenzoquinones, other teperatures;
In toluene at -78℃; for 2h; Yield given;

Upstream product

• 557-20-0 diethylzinc 
• 104764-29-6 triethyl-telluronium; chloride 
• 563-17-7 potassium ethyl sulfate 
• 74-96-4 ethyl bromide 
• 55642-42-7 bis(trifluoromethyl)tellurium 
• 592-02-9 diethylcadmium 
• 74-86-2 acetylene 
• 54007-43-1 4-ethyltellanyl-but-1-en-3-yne 
• 2399-72-6 diethylcalcium 
• 2399-59-9 diethylstrontium 
• 75-03-6 ethyl iodide 
• 10026-07-0 tellurium tetrachloride 
• 1068-22-0 ammonium O,O-diethyldithiophosphate 
• 104746-44-3 triethyltelluronium iodide 

Downstream Products

• 74-84-0 ethane 
• 74-85-1 ethene 
• 106-97-8 n-butane 
• 74-98-6 propane 
• 5582-50-3 Bis-triethylstannyl-tellur 
• 7440-43-9 cadmium 
• 14683-12-6 tellurium 
• 12068-90-5 mercury(II) telluride 
• 143765-05-3 ethyltellurodiethylstibane 
• 95837-61-9 1,1,3,3-tetraethyldistibatellurane 
• 617-85-6 triethylantimony 
• 159125-33-4 Mn(CO)4(CH₂C₆H₅)(Te(CH₂CH₃)2) 

Relevant academic research and scientific papers

Germane vs. digermane formation

Oxidative addition reactions of dialkylchalcogenanes R2E2 and [Me2Si(Nt-Bu)2]Ge 1 yielded bis(alkylchalcogeno)germanes Me2Si(Nt-Bu)2Ge(ER)2 (R = Et, E = S 2, Se 3; R = Me, E = Se

Reaction of tellurium with dichloromethane in the system hydrazine hydrate-alkali

Tellurium reacts with dichloromethane in the system hydrazine hydrate-alkali substituting one chlorine atom by tellurium whereas the second chlorine atom undergoes reductive substitution by hydrogen leading to the formation of methyltellanyl derivatives.

Reaction of 1,1-dichloroethane with tellurium in the system hydrazine hydrate-potassium hydroxide

The reaction of 1,1-dichloroethane with tellurium in the system hydrazine hydrate-potassium hydroxide gave ethyltellanyl derivatives as a result of replacement of one chlorine atom in the substrate by tellurium, and of the other, by hydrogen. Probable mechanisms of reduction of the C-Cl bond and mass spectra of the products were considered. The mass spectra of ditelluroacetals revealed unusual rearrangement of the molecular ion, leading to the formation of Te-Te and new C-C bond.

Process for the preparation of group IVA and group VIA compounds

Methods of preparing Group IVA and Group VIA organometallic compounds, particularly Group IVA organometallic compounds, are provided. Such manufacturing methods employ an amine and/or phosphine catalyst in a transalkylation step and may be performed in a batch, semi-continuous or continuous manner.

Reaction of Mono- and Dihaloalkanes with Mixed Solutions of Chalcogens in Alkaline Reductive Systems

Sufur-selenium, sulfur-tellurium, selenium-tellurium, and sulfur-selenium-tellurium mixtures readily dissolve in the hydrazine hydrate-alkali system to form chalcogenide anions. Alkylation of the latter with ethyl bromide results in preferential formation

N,N′-bis(3-triethylsilylpropyl)thiourea S-dioxide and poly[N,N′-bis(silsesquioxanylpropyl)thiourea S-dioxide] as reductants

The reducing power of organosilicon thiourea S-dioxides, N,N′-bis(3triethylsilylpropyl)thiourea S-dioxide and poly[N,N′ -bis(silsesquioxanylpropyl)thiourea S-dioxide], was studied. The first, monomeric dioxide readily reduces cyclohexanone to cyclohexanol. In its presence, under phase-transfer conditions, dipropyl disulfide reacts with bromobenzene to form propyl phenyl sulfide, and tellurium reacts with ethyl bromide to form diethyl telluride. The reducing power of the polymeric dioxide was demonstrated by the example of reduction of potassium permanganate. Irrespective of the medium (neutral, acidic, or alkaline), this polymer reduces Mn(VII) to Mn(IV).

NEW ROUTE TO ORGANIC SELENIDES AND TELLURIDES

A new simple and convenient synthetic route to organic chalcogenides R2Y (R = alkyl, allyl, benzyl; Y = Se, Te) is developed, which involves generation of Se2- and Te2- anions from Se and Te in the system KOH-hydrazine hydrate, where the latter plays the role of both the medium and reducing agent.Subsequent alkylation of the anions with the corresponding alkyl halides furnishes the target chalcogenides in almost 95percent yield.Alkyl chlorides react faster than alkyl bromides and alkyl iodides.

Synthesis of alkali metal tellurides and ditellurides in THF and their relative reactivities towards alkyl bromides: A convenient synthesis of dialkyl tellurides and dialkyl ditellurides

Lithium, sodium and potassium reduce smoothly elemental tellurium to telluride (Te2-) and ditelluride (Te22-) anions in the tetrahydrofuran, THF, medium in the presence of catalytic amounts of naphthalene.The relative reactivities of these alkali metal tellurides towards alkyl bromides have been investigated and a number of dialkyl tellurides and dialkyl ditellurides prepared in good to excellent yields.The compounds prepared are characterised by elemental analysis, 1H NMR and mass spectral studies.