Dimethyldiselenide supplier

Name
Dimethyldiselenide
EINECS 230-410-7
CAS No. 7101-31-7
Article Data55
CAS DataBase
Density 1.987 g/cm³
Solubility Reacts with water.
Melting Point -82.2 °C
Formula C₂H₆Se₂
Boiling Point 158.9 °C at 760 mmHg
Molecular Weight 187.99
Flash Point 60 °C
Transport Information UN 2929 6.1/PG 2
Appearance orange liquid with a very unpleasant smell
Safety 23-36/37/39-45-61-60-28A-20/21-28
Risk Codes 23/24/25-50/53-33
Molecular Structure
Hazard Symbols T,N
Synonyms Methyldiselenide (6CI,7CI,8CI);Dimethyl diselenide;
PSA 0.00000
LogP 0.40600

Synthetic route

: 136970-32-6
selenothiobenzoic acid Se-methyl ester

: 124-40-3
dimethyl amine

A: 7101-31-7
dimethyl diselenide

B: 15482-60-7
N,N-dimethylthiobenzamide

Conditions

Conditions	Yield
In dichloromethane	A n/a B 100%

...Expand

: 136970-31-5
1-Methylselanyl-2-phenyl-ethanethione

: 124-40-3
dimethyl amine

A: 7101-31-7
dimethyl diselenide

B: 17709-95-4
N,N-dimethyl-2-phenylethanethioamide

Conditions

Conditions	Yield
In dichloromethane	A n/a B 100%

...Expand

: 136992-18-2
(4-Methoxy-phenyl)-methylselanyl-methanethione

: 124-40-3
dimethyl amine

A: 7101-31-7
dimethyl diselenide

B: 15482-63-0
4-methoxy-N,N-dimethylbenzenecarbothioamide

Conditions

Conditions	Yield
In dichloromethane	A n/a B 100%

...Expand

: 28274-57-9
methaneseleninic acid

: 126-81-8
dimedone

: 7101-31-7
dimethyl diselenide

Conditions

Conditions	Yield
In d(4)-methanol for 0.5h;	100%

: 74-88-4
methyl iodide

: 7101-31-7
dimethyl diselenide

Conditions

Conditions	Yield
With potassium hydroxide; selenium; hydrazine hydrate In water at 30 - 32℃;	98%
With potassium hydroxide; selenium(IV) oxide; hydrazine hydrate In water at 30 - 32℃;	95%
With selenium; sodium tetrahydroborate In ethanol; N,N-dimethyl-formamide for 1h;	82%

: 103971-57-9
1-(4-methylphenyl)-1,1-bis(methylseleno)ethane

A: 7101-31-7
dimethyl diselenide

B: 75155-29-2
1-Methyl-4-(1-methylselanyl-ethyl)-benzene

Conditions

Conditions	Yield
With methyl selenide; zinc(II) chloride In dichloromethane for 15h; Ambient temperature;	A n/a B 95%

: 77-78-1
dimethyl sulfate

: 7101-31-7
dimethyl diselenide

Conditions

Conditions	Yield
With sodium hydroxide; selenium; tetrabutylammomium bromide; hydrazine hydrate In water at 15 - 20℃;	90%
With potassium hydroxide; selenium; sodium hydrogensulfite In water Heating;	73%
With sodium hydroxide; selenium; hydrazine hydrate In water 1.) room temp., 7 h, 2) 15 --> 20 deg C;	69%
With sodium hydroxide; selenium; rongalite In water

: 74-83-9
methyl bromide

: 7101-31-7
dimethyl diselenide

Conditions

Conditions	Yield
With sodium hydroxide; selenium; hydrazine hydrate In N,N-dimethyl-formamide 1.) room temp., 6 h;	88%
With disodium diselenide

: 6486-05-1
methyl selenide

: 7101-31-7
dimethyl diselenide

Conditions

Conditions	Yield
With sodium perborate In ethanol at 20℃; for 5h;	86%
With potassium hydroxide; dihydrogen peroxide 2.) ether, 0 deg C, 4 h; Yield given. Multistep reaction;

: 77-78-1
dimethyl sulfate

A: 7101-31-7
dimethyl diselenide

B: 22009-80-9
dimethyl triselenide

Conditions

Conditions	Yield
With selenium; sodium hydride In N,N-dimethyl-formamide at 20℃; for 1h;	A 72% B n/a

: 74-88-4
methyl iodide

A: 593-79-3
dimethylselenide

B: 7101-31-7
dimethyl diselenide

Conditions

Conditions	Yield
With potassium hydroxide; selenium; hydrazine hydrate at 35 - 40℃;	A 67% B 12%

: 74-88-4
methyl iodide

A: 7101-31-7
dimethyl diselenide

B: 22009-80-9
dimethyl triselenide

Conditions

Conditions	Yield
With selenium; sodium hydride In N,N-dimethyl-formamide at 20℃; for 1h;	A 60% B n/a

: 75-11-6
diiodomethane

A: 7101-31-7
dimethyl diselenide

B: N,N-diethyl selenoformamide

Conditions

Conditions	Yield
With selenium; sodium hydride; diethylamine In N,N,N,N,N,N-hexamethylphosphoric triamide at 120℃; for 3h;	A n/a B 48%

: 75-11-6
diiodomethane

: 109-89-7
diethylamine

A: 7101-31-7
dimethyl diselenide

B: N,N-diethyl selenoformamide

Conditions

Conditions	Yield
With selenium; sodium hydride In N,N,N,N,N,N-hexamethylphosphoric triamide at 120℃; for 3h;	A n/a B 48%

...Expand

: 109-89-7
diethylamine

: 74-95-3
1,1-dibromomethane

A: 7101-31-7
dimethyl diselenide

B: N,N-diethyl selenoformamide

Conditions

Conditions	Yield
With selenium; sodium hydride In N,N,N,N,N,N-hexamethylphosphoric triamide at 130℃; for 3h;	A n/a B 47%

...Expand

: 74-95-3
1,1-dibromomethane

A: 7101-31-7
dimethyl diselenide

B: N,N-diethyl selenoformamide

Conditions

Conditions	Yield
With selenium; sodium hydride; diethylamine In N,N,N,N,N,N-hexamethylphosphoric triamide at 130℃; for 3h;	A n/a B 47%

: 75-09-2
dichloromethane

A: 7101-31-7
dimethyl diselenide

B: N,N-diethyl selenoformamide

Conditions

Conditions	Yield
With selenium; sodium hydride; diethylamine In N,N,N,N,N,N-hexamethylphosphoric triamide at 120℃; for 4h;	A n/a B 40%

: 75-09-2
dichloromethane

: 109-89-7
diethylamine

A: 7101-31-7
dimethyl diselenide

B: N,N-diethyl selenoformamide

Conditions

Conditions	Yield
With selenium; sodium hydride In N,N,N,N,N,N-hexamethylphosphoric triamide at 120℃; for 4h;	A n/a B 40%

...Expand

: 67-68-5
dimethyl sulfoxide

A: 75-18-3
dimethylsulfide

B: 7101-31-7
dimethyl diselenide

C: 624-92-0
Dimethyldisulphide

D: 41884-42-8
dimethylselenenyl sulfide

Conditions

Conditions	Yield
With potassium hydroxide; selenium; water at 110℃; for 6h; Further byproducts given;	A 8.2% B 0.2% C 3.3% D 0.5%
With potassium hydroxide; selenium; water at 110℃; for 6h; Further byproducts given;	A 8.2% B 0.2% C 3.3% D 0.2%

...Expand

: 67-68-5
dimethyl sulfoxide

A: 75-18-3
dimethylsulfide

B: 7101-31-7
dimethyl diselenide

C: 624-92-0
Dimethyldisulphide

D: 70873-58-4
methyl methylthiomethyl selenide

Conditions

Conditions	Yield
With potassium hydroxide; selenium; water at 110℃; for 6h; Further byproducts given;	A 8.2% B 0.2% C 3.3% D 0.1%

...Expand

: 56-23-5
tetrachloromethane

: 6486-05-1
methyl selenide

A: 7101-31-7
dimethyl diselenide

B: 66622-20-6
trimethyl orthoselenoformate

Conditions

Conditions	Yield
reagiert als Natriumsalz;

...Expand

: 562-54-9
potassium methyl sulfate

: 7101-31-7
dimethyl diselenide

Conditions

Conditions	Yield
With potassium diselenide

: 512-42-5
sodium methyl sulfate

A: 593-79-3
dimethylselenide

B: 7101-31-7
dimethyl diselenide

Conditions

Conditions	Yield
With phosphorus pentaselenide

: 77-78-1
dimethyl sulfate

A: 593-79-3
dimethylselenide

B: 7101-31-7
dimethyl diselenide

Conditions

Conditions	Yield
With potassium diselenide; water
With disodium diselenide; water at 100℃;

: 6486-05-1
methyl selenide

: 28274-57-9
methaneseleninic acid

: 7101-31-7
dimethyl diselenide

Conditions

Conditions	Yield
Yield given. Multistep reaction;

: 66030-43-1
2,2-bis(methylseleno)undecane

A: 7101-31-7
dimethyl diselenide

B: 112-12-9
methyl nonyl ketone

Conditions

Conditions	Yield
With sulfuric acid at 20℃; for 0.5h; Yield given;
With sulfuric acid at 20℃; for 0.5h; transformation of selenoacetals to carbonyl compounds;

: 2181-42-2
trimethylsulphonium iodide

: 7101-31-7
dimethyl diselenide

Conditions

Conditions	Yield
With sodium hydroxide; selenium; hydrazine hydrate 1.) 6 h, room temperature, water, 2.) room temperature, water; Yield given. Multistep reaction;

: 76573-17-6
α-(methylseleno)-p-nitrostyrene

A: 7101-31-7
dimethyl diselenide

B: 6486-05-1
methyl selenide

C: (methylseleno)acetal of p-nitroacetophenone

D: O,Se-dimethylacetal of p-nitroacetophenone

Conditions

Conditions	Yield
With sulfuric acid In methanol
With sulfuric acid In methanol Title compound not separated from byproducts;
With sulfuric acid In methanol Title compound not separated from byproducts;

...Expand

: 120157-91-7
C5H12SeTe

A: 7101-31-7
dimethyl diselenide

B: 77129-69-2
dibutyl ditelluride

: 7101-31-7
dimethyl diselenide

: C42H64B2N4

: C33H42BN2Se2

Conditions

Conditions	Yield
In benzene-d6 at 20℃;	100%

: 7101-31-7
dimethyl diselenide

: 1,3-dibromo-5-methoxy-2-((4-methoxyphenyl)ethynyl)benzene

: (3-bromo-5-methoxy-2-((4-methoxyphenyl)ethynyl)phenyl)(methyl)selane

Conditions

Conditions	Yield
Stage #1: 1,3-dibromo-5-methoxy-2-((4-methoxyphenyl)ethynyl)benzene With n-butyllithium In tetrahydrofuran at -78℃; for 1.5h; Inert atmosphere; Stage #2: dimethyl diselenide In tetrahydrofuran at -78 - 20℃; for 3h; Inert atmosphere;	100%

: 7101-31-7
dimethyl diselenide

: 89763-93-9
2-Fluoro-4-(trifluoromethyl)benzaldehyde

: 2-(methylselanyl)-4-(trifluoromethyl)benzaldehyde

Conditions

Conditions	Yield
Stage #1: dimethyl diselenide With 1,4-dithiothreitol In N,N-dimethyl-formamide at 25℃; for 0.5h; Inert atmosphere; Stage #2: 2-Fluoro-4-(trifluoromethyl)benzaldehyde In N,N-dimethyl-formamide at 25℃; for 0.25h; Inert atmosphere; Stage #3: With 1,8-diazabicyclo[5.4.0]undec-7-ene In N,N-dimethyl-formamide at 25℃; for 0.25h; Inert atmosphere;	100%

: 7101-31-7
dimethyl diselenide

: 74-85-1
ethene

: 76573-12-1
1-bromo-2-(methylseleno)ethane

Conditions

Conditions	Yield
With bromine In dichloromethane at 0℃;	99%

: 7101-31-7
dimethyl diselenide

: C2H6S2Se2

Conditions

Conditions	Yield
With α,α-diphenylbenzenemethanesulfenyl chloride In chloroform at 20℃; for 0.0833333h;	98%

: 7101-31-7
dimethyl diselenide

: 105-39-5
chloroacetic acid ethyl ester

: 80920-09-8
ethyl 2-(methylselanyl)acetate

Conditions

Conditions	Yield
With sodium tetrahydroborate In ethanol at 0℃; for 1h;	98%

: 7101-31-7
dimethyl diselenide

: 66-22-8
uracil

: 5-(methylselanyl)pyrimidine-2,4(1H,3H)-dione

Conditions

Conditions	Yield
With dihydrogen peroxide; sodium iodide In dimethyl sulfoxide at 50℃; for 3h; Schlenk technique;	98%
With dihydrogen peroxide; sodium iodide In dimethyl sulfoxide at 50℃;	91%

: 7101-31-7
dimethyl diselenide

: C2H6S3Se2

Conditions

Conditions	Yield
With α,α-diphenylbenzenemethanesulfenyl chloride In chloroform at 20℃; for 0.0833333h;	96%

: 7101-31-7
dimethyl diselenide

: 173170-12-2
2,2'-O-anhydro-1-<5'-O-(4,4'-dimethoxytrityl)-β-D-arabinofuranosyl>uracil

: 393802-82-9
5'-O-(4,4'-dimethoxytrityl)-2'-deoxy-2'-Se-methoxyuridine

Conditions

Conditions	Yield
Stage #1: dimethyl diselenide With sodium tetrahydroborate In tetrahydrofuran; ethanol Stage #2: 2,2'-O-anhydro-1-<5'-O-(4,4'-dimethoxytrityl)-β-D-arabinofuranosyl>uracil In tetrahydrofuran; ethanol at 20℃; for 3h; Further stages.;	96%
With sodium tetrahydroborate In tetrahydrofuran; ethanol at 20℃; for 2h;	92%

: 1871-57-4
2-chloromethyl-3-chloroprop-1-ene

: 7101-31-7
dimethyl diselenide

: 188245-07-0
3-methylseleno-2-methyl-selenomethyl-1-propene

Conditions

Conditions	Yield
With sodium hydride In N,N-dimethyl-formamide	95%
With sodium hydride 1.) DMF, 20 deg C, 1 h, 2.) DMF, 20 deg C, 2 h; Yield given. Multistep reaction;

: 32660-96-1
(pentamethylcyclopentadienyl)(dicarbonyl)iridium(I)

: 7101-31-7
dimethyl diselenide

: 217181-11-8
(C5(CH3)5)Ir(CO)(SeCH3)2

Conditions

Conditions	Yield
In tetrahydrofuran byproducts: CO; Irradiation (UV/VIS); Ar-atmosphere; irradiation of equimolar amts. (15°C, 40 min); evapn. (vac.), chromy. (SiO2, CH2Cl2/pentane=1:1), recrystn. (CHCl3/hexane, -25°C);	95%

: 7101-31-7
dimethyl diselenide

: 100-52-7
benzaldehyde

: 35729-40-9
4-(methylselanyl)benzaldehyde

Conditions

Conditions	Yield
Stage #1: dimethyl diselenide With sodium tetrahydroborate In ethanol at 20℃; for 0.333333h; Inert atmosphere; Stage #2: benzaldehyde In ethanol at 150℃; for 2h;	95%

: 7101-31-7
dimethyl diselenide

: 33844-21-2
2-nitro-4-methoxybenzoic acid

: (4-methoxy-2-nitrophenyl)(methyl)selane

Conditions

Conditions	Yield
With 1,10-Phenanthroline; oxygen; copper diacetate; potassium carbonate In toluene at 150℃; under 760.051 Torr; for 24h; Schlenk technique; Sealed tube;	95%
With 1,10-Phenanthroline; oxygen; copper diacetate; potassium carbonate In toluene at 140℃; for 24h;	85%

: 7101-31-7
dimethyl diselenide

: 1228932-02-2
(E)-methyl 2-(azidomethyl)-5-phenylpent-2-en-4-ynoate

: methyl 5-(methylselanyl)-6-phenylnicotinate

Conditions

Conditions	Yield
With copper dichloride In acetonitrile at 0℃; for 1h;	95%

: 7101-31-7
dimethyl diselenide

: 292642-43-4
N6-benzoyl-2',3'-O-isopropylidene-5'-O-(triethylsilyl)adenosine

: N6-benzoyl-2',3'-O-isopropylidene-8-(methylseleno)-5'-O-(triethylsilyl)adenosine

Conditions

Conditions	Yield
With 4-toluenesulfonyl azide; lithium diisopropyl amide In tetrahydrofuran; hexane at -78 - 0℃;	94%

: 7101-31-7
dimethyl diselenide

: 3-(10,11-dihydro-5H-dibenzo[b,f]azepin-5-yl)propanol methanesulfonate

: 1425793-98-1
5-(3-(methylselanyl)propyl)-10,11-dihydro-5H-dibenzo[b,f]azepine

Conditions

Conditions	Yield
Stage #1: dimethyl diselenide With sodium tetrahydroborate; ethanol In tetrahydrofuran at 20℃; for 0.166667h; Inert atmosphere; Stage #2: 3-(10,11-dihydro-5H-dibenzo[b,f]azepin-5-yl)propanol methanesulfonate In tetrahydrofuran at 20℃; for 0.666667h; Inert atmosphere;	94%

: 84806-15-5
1,3-di-tert-butyl-2,2-dimethyl-1,3,2,4-diazasilagermaetidine

: 7101-31-7
dimethyl diselenide

: [Me2Si(Nt-Bu2)Ge{SeMe}2]

Conditions

Conditions	Yield
In hexane at 70℃; for 1h;	94%

: 7101-31-7
dimethyl diselenide

: 75-09-2
dichloromethane

: 56051-03-7
bis(methylselanyl)methane

Conditions

Conditions	Yield
With sodium hydroxide; hydrazine hydrate; tetraethylammonium chloride In N,N-dimethyl-formamide	93%

: 7101-31-7
dimethyl diselenide

: bis(methylseleno) sulfide

Conditions

Conditions	Yield
With tritylsulfenyl chloride In chloroform at 20℃; for 0.166667h;	93%

: 7101-31-7
dimethyl diselenide

: 54655-08-2
N,N-dimethyl-2-(2-phenylethynyl)aniline

: 1346165-05-6
1-methyl-3-(methylselanyl)-2-phenyl-1H-indole

Conditions

Conditions	Yield
With iodine; iron In acetonitrile at 80℃; for 3h; Inert atmosphere;	93%

: 6262-42-6
1,2,3,3-tetrachlorocyclopropene

: 7101-31-7
dimethyl diselenide

: C6H9Se3(1+)*Cl6Sb(1-)

Conditions

Conditions	Yield
With antimony(III) chloride In dichloromethane at 20℃;	92%

Dimethyldiselenide Specification

The Diselenide, dimethyl(9CI), with CAS registry number 7101-31-7, belongs to the following product categories: (1)Pharmaceutical Intermediates; (2)Classes of Metal Compounds; (3)Se (Selenium) Compounds; (4)Semimetal Compounds. It has the systematic name of dimethyldiselane. This chemical should be stored at the temperature of 0-6°C.

Physical properties of Diselenide, dimethyl(9CI): (1)ACD/LogP: 2.40; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.4; (4)ACD/LogD (pH 7.4): 2.4; (5)ACD/BCF (pH 5.5): 39.39; (6)ACD/BCF (pH 7.4): 39.39; (7)ACD/KOC (pH 5.5): 482.64; (8)ACD/KOC (pH 7.4): 482.64; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 1; (12)Polar Surface Area: 0 Å²; (13)Enthalpy of Vaporization: 37.92 kJ/mol; (14)Vapour Pressure: 3.34 mmHg at 25°C.

Preparation: this chemical can be prepared by bromomethane. This reaction will need reagents NaOH, Se, N₂H₄^.H₂O and solvent dimethylformamide. The yield is about 88%.

Uses of Diselenide, dimethyl(9CI): it can be used to produce methaneselenol. This reaction will need reagent mercury
water.

R23/24/25:Toxic by inhalation, in contact with skin and if swallowed. R33:Danger of cumulative effects. R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.

When you are using this chemical, please be cautious about it as the following:
The Diselenide, dimethyl(9CI) is toxic by inhalation, in contact with skin and if swallowed. And it has danger of cumulative effects. This chemical is very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment, so avoid release to the environment. Refer to special instructions / safety data sheets. When using, do not eat or drink and smoke. When use it, wear suitable protective clothing, gloves and eye/face protection. If contact with eyes, rinse immediately with plenty of water and seek medical advice. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) After contact with skin, wash immediately with plenty of soap-suds. After using it, this material and its container must be disposed of as hazardous waste.

You can still convert the following datas into molecular structure:
(1)SMILES: [Se]([Se]C)C
(2)InChI: InChI=1/C2H6Se2/c1-3-4-2/h1-2H3
(3)InChIKey: VLXBWPOEOIIREY-UHFFFAOYAB
(4)Std. InChI: InChI=1S/C2H6Se2/c1-3-4-2/h1-2H3
(5)Std. InChIKey: VLXBWPOEOIIREY-UHFFFAOYSA-N

Product Name

Dimethyldiselenide

Synthetic route

Dimethyldiselenide Specification

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