Product Name

  • Name

    Dibromo methane

  • EINECS 200-824-2
  • CAS No. 74-95-3
  • Article Data81
  • CAS DataBase
  • Density 2.434 g/cm3
  • Solubility water: 0.1 g/100 mL (20 °C)
  • Melting Point -52 °C
  • Formula CH2Br2
  • Boiling Point 97 °C at 760 mmHg
  • Molecular Weight 173.835
  • Flash Point 96-98 °C
  • Transport Information UN 2664 6.1/PG 3
  • Appearance colourless liquid
  • Safety 24-61-45-36/37-16-7
  • Risk Codes 20-52/53-39/23/24/25-23/24/25-11
  • Molecular Structure Molecular Structure of 74-95-3 (Dibromo methane)
  • Hazard Symbols HarmfulXn,ToxicT,FlammableF
  • Synonyms Methylene bromide;Methylene dibromide;NSC 7293;Dibromomethane [UN2664] [Poison];Methane, dibromo-;
  • PSA 0.00000
  • LogP 1.73370

Synthetic route

Bromoform
75-25-2

Bromoform

trimethylsilyl bromide
2857-97-8

trimethylsilyl bromide

A

trimethyl-tribromomethyl-silane
18142-75-1

trimethyl-tribromomethyl-silane

B

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
With hexaethylphosphoric triamide In diethyl ether at 20℃; for 1h;A 82%
B n/a
bis(thiocyanato)methane
6317-18-6

bis(thiocyanato)methane

sodium thiocyanide
540-72-7

sodium thiocyanide

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
Stage #1: bis(thiocyanato)methane; sodium thiocyanide In methanol; water at 74 - 75℃; for 5h;
Stage #2: With sodium hydrogencarbonate In methanol; water pH=6.3; Concentration; Solvent;
79.3%
methane
34557-54-5

methane

A

methyl bromide
74-83-9

methyl bromide

B

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
With bromine at 18 - 500℃; for 0.0166667h; Gas phase;A 70.6%
B 24.7%
With hydrogen bromide; oxygen; Mg/Ru/SiO2 In water at 580℃; Conversion of starting material;
With hydrogen bromide; oxygen; Ba/Bi/Ru/SiO2 In water at 580 - 600℃; Conversion of starting material;
dichloromethane
75-09-2

dichloromethane

A

chlorobromomethane
74-97-5

chlorobromomethane

B

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
With calcium bromide; tetrahexylammonium bromide at 110℃; for 24h;A 30%
B 62%
With ethyl bromide; aluminum oxide; tetrabutyl phosphonium bromide at 170℃;A 49 % Spectr.
B 25 % Spectr.
With ethyl bromide at 170℃; Product distribution; var. of catalyst, reagent;A 50 % Spectr.
B 24 % Spectr.
With ethyl bromide; aluminum oxide at 170℃;A 66 % Spectr.
B 14 % Spectr.
2-ethoxy-1,3-dioxane
76508-46-8

2-ethoxy-1,3-dioxane

Bromoform
75-25-2

Bromoform

A

trimethylene carbonate
2453-03-4

trimethylene carbonate

B

ethyl bromide
74-96-4

ethyl bromide

C

3-Brompropylformiat
53452-10-1

3-Brompropylformiat

D

acetaldehyde
75-07-0

acetaldehyde

E

3-bromopropyl ethyl carbonate

3-bromopropyl ethyl carbonate

F

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
dibenzoyl peroxide at 100℃; for 2h; Rate constant; Product distribution; other temperature;A n/a
B n/a
C n/a
D n/a
E 60%
F n/a
Bromoform
75-25-2

Bromoform

2-(hexyloxy)-1,3-dioxolane
83498-70-8

2-(hexyloxy)-1,3-dioxolane

A

[1,3]-dioxolan-2-one
96-49-1

[1,3]-dioxolan-2-one

B

1-bromo-hexane
111-25-1

1-bromo-hexane

C

formic acid-(2-bromo-ethyl ester)
6065-67-4

formic acid-(2-bromo-ethyl ester)

D

hexanal
66-25-1

hexanal

E

2-bromoethyl hexyl carbonate

2-bromoethyl hexyl carbonate

F

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
dibenzoyl peroxide at 100℃; for 2h; Rate constant; Product distribution; other temperature;A n/a
B n/a
C n/a
D n/a
E 60%
F n/a
chloro-trimethyl-silane
75-77-4

chloro-trimethyl-silane

Bromoform
75-25-2

Bromoform

A

trimethyl-tribromomethyl-silane
18142-75-1

trimethyl-tribromomethyl-silane

B

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
With hexaethylphosphoric triamide In diethyl ether at 20℃; for 1h;A 56%
B n/a
Bromoform
75-25-2

Bromoform

2-(hexyloxy)-m-dioxane

2-(hexyloxy)-m-dioxane

A

trimethylene carbonate
2453-03-4

trimethylene carbonate

B

1-bromo-hexane
111-25-1

1-bromo-hexane

C

3-Brompropylformiat
53452-10-1

3-Brompropylformiat

D

hexanal
66-25-1

hexanal

E

3-bromopropyl hexyl carbonate

3-bromopropyl hexyl carbonate

F

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
dibenzoyl peroxide at 100℃; for 2h; Rate constant; Product distribution; other temperature;A n/a
B n/a
C n/a
D n/a
E 56%
F n/a
methane
34557-54-5

methane

A

methyl bromide
74-83-9

methyl bromide

B

Bromoform
75-25-2

Bromoform

C

carbon tetrabromide
558-13-4

carbon tetrabromide

D

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
With bromine at 500℃; Product distribution; Further Variations:; Temperatures; Bromination;A 17.4%
B 0.48%
C 2.5%
D 5%
methyl bromide
74-83-9

methyl bromide

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
With bromine at 250℃;
n-butyllithium
109-72-8, 29786-93-4

n-butyllithium

carbon tetrabromide
558-13-4

carbon tetrabromide

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
at -50℃;
methylene
2465-56-7

methylene

Bromoform
75-25-2

Bromoform

1,2-dibromomethane
74-95-3

1,2-dibromomethane

methylene
2465-56-7

methylene

dibromodichloromethane
594-18-3

dibromodichloromethane

A

1,1-Dichloroethylene
75-35-4

1,1-Dichloroethylene

B

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
Tetrabrommethan,Bromoform und Jodoform reagieren analog;
diiodomethane
75-11-6

diiodomethane

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
With water; bromine
With bromine
methane
34557-54-5

methane

A

Bromoform
75-25-2

Bromoform

B

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
With bromine at 400℃;
dichloromethane
75-09-2

dichloromethane

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
With aluminum tri-bromide
With aluminum tri-bromide; hydrogen bromide
With bromine; aluminium
chlorobromomethane
74-97-5

chlorobromomethane

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
With bromine; aluminium
Bromoform
75-25-2

Bromoform

potassium tert-butylate
865-47-4

potassium tert-butylate

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Bromoform
75-25-2

Bromoform

ethylmagnesium bromide
925-90-6

ethylmagnesium bromide

A

ethyl bromide
74-96-4

ethyl bromide

B

methane
34557-54-5

methane

C

3-ethylpentane
617-78-7

3-ethylpentane

D

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
Produkt: Aethan, Acetylen;
Bromoform
75-25-2

Bromoform

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
With alkali sulfite
With phenylhydrazine
With alkaline potassium arsenite man destilliert das Reaktionsprodukt mit Wasserdampf;
2,2,5,5-tetrabromo-1,6-diphenyl-hexane-1,3,4,6-tetraone
861525-37-3

2,2,5,5-tetrabromo-1,6-diphenyl-hexane-1,3,4,6-tetraone

furan-2,3,5(4H)-trione pyridine (1:1)

furan-2,3,5(4H)-trione pyridine (1:1)

A

oxalic acid
144-62-7

oxalic acid

B

benzoic acid
65-85-0

benzoic acid

C

1,2-dibromomethane
74-95-3

1,2-dibromomethane

acetic acid
64-19-7

acetic acid

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
With bromine; pyrographite at 300℃;
bromoacetic acid
79-08-3

bromoacetic acid

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
Electrolysis;
methylene
2465-56-7

methylene

dibromodichloromethane
594-18-3

dibromodichloromethane

chlorobenzene
108-90-7

chlorobenzene

A

1,1-Dichloroethylene
75-35-4

1,1-Dichloroethylene

B

1,2-dibromomethane
74-95-3

1,2-dibromomethane

methylene
2465-56-7

methylene

carbon tetrabromide
558-13-4

carbon tetrabromide

chlorobenzene
108-90-7

chlorobenzene

A

vinylidene dibromide
593-92-0

vinylidene dibromide

B

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Bromoform
75-25-2

Bromoform

phenylhydrazine
100-63-0

phenylhydrazine

A

formic acid
64-18-6

formic acid

B

1,2-dibromomethane
74-95-3

1,2-dibromomethane

2-ethoxy-1,3-dioxolane
4544-20-1

2-ethoxy-1,3-dioxolane

Bromoform
75-25-2

Bromoform

A

[1,3]-dioxolan-2-one
96-49-1

[1,3]-dioxolan-2-one

B

ethyl bromide
74-96-4

ethyl bromide

C

formic acid-(2-bromo-ethyl ester)
6065-67-4

formic acid-(2-bromo-ethyl ester)

D

2-bromoethyl ethyl carbonate
36842-22-5

2-bromoethyl ethyl carbonate

E

acetaldehyde
75-07-0

acetaldehyde

F

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
With dibenzoyl peroxide at 90℃; for 0.5h; Product distribution;
dibenzoyl peroxide at 100℃; for 2h; Rate constant; Product distribution; other temperature, other time;
1-bromo-butane
109-65-9

1-bromo-butane

dichloromethane
75-09-2

dichloromethane

A

chlorobromomethane
74-97-5

chlorobromomethane

B

n-Butyl chloride
109-69-3

n-Butyl chloride

C

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
aluminum oxide; tetrabutyl phosphonium bromide In gas at 150℃; Product distribution; effect of catalytic bed;
2-phenyl-1,3-oxathiolane
5721-88-0

2-phenyl-1,3-oxathiolane

A

1,1,2,2-tetrabromoethane
79-27-6

1,1,2,2-tetrabromoethane

B

S-(2-bromoethyl) benzothioate
81110-22-7

S-(2-bromoethyl) benzothioate

C

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
With Bromoform; di-tert-butyl peroxide at 130℃; for 4.5h; Yields of byproduct given;A n/a
B 16 % Turnov.
C n/a
ethyl bromide
74-96-4

ethyl bromide

dichloromethane
75-09-2

dichloromethane

A

chloroethane
75-00-3

chloroethane

B

chlorobromomethane
74-97-5

chlorobromomethane

C

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Conditions
ConditionsYield
aluminum oxide; tetrabutyl phosphonium bromide In gas at 150℃; Product distribution; effect of catalytic bed;
carbon dioxide
124-38-9

carbon dioxide

1,2-dibromomethane
74-95-3

1,2-dibromomethane

dibromoacetic acid
631-64-1

dibromoacetic acid

Conditions
ConditionsYield
Stage #1: 1,2-dibromomethane With 2,2,6,6-tetramethylpiperidinylmagnesium chloride lithium chloride complex In tetrahydrofuran; toluene at -78℃; for 0.5h; Inert atmosphere;
Stage #2: carbon dioxide In tetrahydrofuran; toluene at -78℃; for 3h;
100%
(i) nBuLi, CH2Cl2, THF, (ii) /BRN= 1900390/; Multistep reaction;
Quinuclidine
100-76-5

Quinuclidine

1,2-dibromomethane
74-95-3

1,2-dibromomethane

1-Bromomethyl-1-azonia-bicyclo[2.2.2]octane; bromide
104303-96-0

1-Bromomethyl-1-azonia-bicyclo[2.2.2]octane; bromide

Conditions
ConditionsYield
In acetonitrile at 30℃; under 750.06 Torr; for 3h;100%
2-tert-butylcyclopentanone
40557-24-2

2-tert-butylcyclopentanone

1,2-dibromomethane
74-95-3

1,2-dibromomethane

1-tert-butyl-2-methylene-cyclopentane
66228-12-4

1-tert-butyl-2-methylene-cyclopentane

Conditions
ConditionsYield
With titanium tetrachloride; zinc In dichloromethane100%
(S)-1,2,3,10,11,12-Hexamethoxy-7-methyl-7,8-dihydro-5H-dibenzo[a,c]cycloocten-6-one
130611-53-9, 130695-96-4

(S)-1,2,3,10,11,12-Hexamethoxy-7-methyl-7,8-dihydro-5H-dibenzo[a,c]cycloocten-6-one

1,2-dibromomethane
74-95-3

1,2-dibromomethane

(S)-1,2,3,10,11,12-Hexamethoxy-6-methyl-7-methylene-5,6,7,8-tetrahydro-dibenzo[a,c]cyclooctene
114394-15-9, 130695-98-6, 135095-47-5

(S)-1,2,3,10,11,12-Hexamethoxy-6-methyl-7-methylene-5,6,7,8-tetrahydro-dibenzo[a,c]cyclooctene

Conditions
ConditionsYield
With titanium tetrachloride; zinc In dichloromethane for 0.25h; Ambient temperature;100%
(4aR,6S,7R,8aS)-4-(4-methoxybenzyloxy)butyric acid 2,2-di(tert-butyl)-6-methyl-6-(2-methylallyl)-4,4a,6,7,8,8a-hexahydro-1,3,5-trioxa-2-silanaphthalen-7-yl ester
511256-85-2

(4aR,6S,7R,8aS)-4-(4-methoxybenzyloxy)butyric acid 2,2-di(tert-butyl)-6-methyl-6-(2-methylallyl)-4,4a,6,7,8,8a-hexahydro-1,3,5-trioxa-2-silanaphthalen-7-yl ester

1,2-dibromomethane
74-95-3

1,2-dibromomethane

(4aR,6S,7R,8aS)-2,2-di(tert-butyl)-7-{1-[3-(4-methoxybenzyloxy)propyl]vinyloxy}-6-methyl-6-(2-methylallyl)-4,4a,6,7,8,8a-hexahydro-1,3,5-trioxa-2-silanaphthalene
511256-86-3

(4aR,6S,7R,8aS)-2,2-di(tert-butyl)-7-{1-[3-(4-methoxybenzyloxy)propyl]vinyloxy}-6-methyl-6-(2-methylallyl)-4,4a,6,7,8,8a-hexahydro-1,3,5-trioxa-2-silanaphthalene

Conditions
ConditionsYield
With N,N,N,N,-tetramethylethylenediamine; titanium tetrachloride; zinc; lead(II) chloride In tetrahydrofuran; dichloromethane for 2h; Heating;100%
1-benzylimidazole
4238-71-5

1-benzylimidazole

1,2-dibromomethane
74-95-3

1,2-dibromomethane

1,1’-dibenzyl-3,3’-methylenediimidazolium dibromide

1,1’-dibenzyl-3,3’-methylenediimidazolium dibromide

Conditions
ConditionsYield
In tetrahydrofuran at 100℃;100%
Inert atmosphere; Schlenk technique;99%
at 70 - 80℃;81%
5,5,9-trimethylspiro<5.5>undec-8-en-1-one
133545-69-4

5,5,9-trimethylspiro<5.5>undec-8-en-1-one

1,2-dibromomethane
74-95-3

1,2-dibromomethane

3,7,7-trimethyl-11-methylenespiro[5.5]undec-2-ene
15401-86-2

3,7,7-trimethyl-11-methylenespiro[5.5]undec-2-ene

Conditions
ConditionsYield
With titanium tetrachloride; zinc In dichloromethane at 0 - 20℃; for 3h;100%
5,5-dimethoxypentanoic acid 2,2-di-tert-butyl-6-methyl-6-(2-methylallyl)-hexahydro-1,3,5-trioxa-2-sila-naphthalen-7-yl ester
943226-61-7

5,5-dimethoxypentanoic acid 2,2-di-tert-butyl-6-methyl-6-(2-methylallyl)-hexahydro-1,3,5-trioxa-2-sila-naphthalen-7-yl ester

1,2-dibromomethane
74-95-3

1,2-dibromomethane

C27H50O6Si
1053270-93-1

C27H50O6Si

Conditions
ConditionsYield
With N,N,N,N,-tetramethylethylenediamine; titanium tetrachloride; zinc; lead(II) chloride In tetrahydrofuran; dichloromethane for 2h;100%
4-[5-(3-benzyloxy-1-methylpropyl)-4-methyl-tetrahydro-furan-2-yl]-3-triisopropylsilanyloxy-butyric acid 2-but-3-enyl-10a,11a-dimethyl-dodecahydro-1,5,10-trioxa-cyclohepta[b]naphthalen-3-yl ester
943226-85-5

4-[5-(3-benzyloxy-1-methylpropyl)-4-methyl-tetrahydro-furan-2-yl]-3-triisopropylsilanyloxy-butyric acid 2-but-3-enyl-10a,11a-dimethyl-dodecahydro-1,5,10-trioxa-cyclohepta[b]naphthalen-3-yl ester

1,2-dibromomethane
74-95-3

1,2-dibromomethane

C48H80O7Si

C48H80O7Si

Conditions
ConditionsYield
With N,N,N,N,-tetramethylethylenediamine; titanium tetrachloride; zinc; lead(II) chloride In dichloromethane at 65℃;100%
1-Butylimidazole
4316-42-1

1-Butylimidazole

1,2-dibromomethane
74-95-3

1,2-dibromomethane

1,1’-di-n-butyl-3,3’-methylenediimidazolium dibromide

1,1’-di-n-butyl-3,3’-methylenediimidazolium dibromide

Conditions
ConditionsYield
In tetrahydrofuran at 100℃;100%
Inert atmosphere; Schlenk technique;89%
In tetrahydrofuran at 20 - 80℃; for 192h;87.6%
In acetonitrile for 96h; Reflux;
C18H25BO3

C18H25BO3

1,2-dibromomethane
74-95-3

1,2-dibromomethane

C18H24BBrO3

C18H24BBrO3

Conditions
ConditionsYield
Stage #1: C18H25BO3; 1,2-dibromomethane With lithium diisopropyl amide In tetrahydrofuran at -78℃; for 1h; Inert atmosphere;
Stage #2: With zinc(II) chloride In tetrahydrofuran; diethyl ether at -78 - 20℃; Inert atmosphere; enantioselective reaction;
100%
vilmorrianine E

vilmorrianine E

1,2-dibromomethane
74-95-3

1,2-dibromomethane

N-bromomethyl vilmorrianine E hydrobromide

N-bromomethyl vilmorrianine E hydrobromide

Conditions
ConditionsYield
In ethyl acetate for 120h; Reflux;100%
diethyl tert-butoxycarbonylaminomalonate
102831-44-7

diethyl tert-butoxycarbonylaminomalonate

1,2-dibromomethane
74-95-3

1,2-dibromomethane

C13H22BrNO6

C13H22BrNO6

Conditions
ConditionsYield
With caesium carbonate In N,N-dimethyl-formamide at 20℃; Inert atmosphere;100%
3-formylphenyl acetate
34231-78-2

3-formylphenyl acetate

3-acetylbenzaldehyde
41908-11-6

3-acetylbenzaldehyde

1,2-dibromomethane
74-95-3

1,2-dibromomethane

3-vinylphenyl acetate
2454-30-0

3-vinylphenyl acetate

Conditions
ConditionsYield
With acetic anhydride99.7%
chloro-trimethyl-silane
75-77-4

chloro-trimethyl-silane

1,2-dibromomethane
74-95-3

1,2-dibromomethane

dibromobis(trimethylsilyl)methane
29955-10-0

dibromobis(trimethylsilyl)methane

Conditions
ConditionsYield
With lithium diisopropyl amide In tetrahydrofuran; hexane; pentane 1.) -110 deg C, 20 min, 2.) -110 deg C to r.t., 12 h;99%
With lithium diisopropyl amide In tetrahydrofuran at -78 - 20℃;88%
With lithium diisopropyl amide In tetrahydrofuran at -100℃;60%
(+)-(2,3-endo)-tert-butyldimethylsilyl 3-(1-oxopropyl)bicyclo<2.2.1>hept-5-ene-2-carboxylate
113352-74-2

(+)-(2,3-endo)-tert-butyldimethylsilyl 3-(1-oxopropyl)bicyclo<2.2.1>hept-5-ene-2-carboxylate

1,2-dibromomethane
74-95-3

1,2-dibromomethane

(+)-(2,3-endo)-tert-butyldimethylsilyl 3-(1-methenylpropyl)bicyclo<2.2.1>hept-5-ene-2-carboxylate
113352-75-3

(+)-(2,3-endo)-tert-butyldimethylsilyl 3-(1-methenylpropyl)bicyclo<2.2.1>hept-5-ene-2-carboxylate

Conditions
ConditionsYield
With titanium tetrachloride; zinc In tetrahydrofuran; dichloromethane at 20℃; for 0.5h;99%
5'-(O-tert-butyl(dimethyl)silyl)-3'-ketothymidine
147043-60-5

5'-(O-tert-butyl(dimethyl)silyl)-3'-ketothymidine

1,2-dibromomethane
74-95-3

1,2-dibromomethane

1-[(2R,5S)-5-(tert-Butyl-dimethyl-silanyloxymethyl)-4-methylene-tetrahydro-furan-2-yl]-5-methyl-1H-pyrimidine-2,4-dione
170638-74-1

1-[(2R,5S)-5-(tert-Butyl-dimethyl-silanyloxymethyl)-4-methylene-tetrahydro-furan-2-yl]-5-methyl-1H-pyrimidine-2,4-dione

Conditions
ConditionsYield
With titanium tetrachloride; zinc In tetrahydrofuran; dichloromethane for 2h; Ambient temperature;99%
With titanium tetrachloride; zinc In tetrahydrofuran; dichloromethane
1-methyl-1H-imidazole
616-47-7

1-methyl-1H-imidazole

1,2-dibromomethane
74-95-3

1,2-dibromomethane

1,1'-dimethyl-3,3'-methylenediimidazolium bromide

1,1'-dimethyl-3,3'-methylenediimidazolium bromide

Conditions
ConditionsYield
In tetrahydrofuran at 130℃; for 24h;99%
Inert atmosphere; Schlenk technique;99%
for 18h; Reflux;96%
1,2-dibromomethane
74-95-3

1,2-dibromomethane

methyl 5,6-dihydroxy-2-thien-2-ylpyrimidine-4-carboxylate
391680-92-5

methyl 5,6-dihydroxy-2-thien-2-ylpyrimidine-4-carboxylate

5-thiophen-2-yl-[1,3]dioxolo[4,5-d]pyrimidine-7-carboxylic acid methyl ester
766557-56-6

5-thiophen-2-yl-[1,3]dioxolo[4,5-d]pyrimidine-7-carboxylic acid methyl ester

Conditions
ConditionsYield
With potassium fluoride In N,N-dimethyl-formamide at 120℃;99%
3-(5-chloro-2-methoxy-benzenesulfonylamino)-4-hydroxy-benzoic acid methyl ester
946121-16-0

3-(5-chloro-2-methoxy-benzenesulfonylamino)-4-hydroxy-benzoic acid methyl ester

1,2-dibromomethane
74-95-3

1,2-dibromomethane

3-(5-chloro-2-methoxy-benzenesulfonyl)-2,3-dihydro-benzooxazole-5-carboxylic acid methyl ester
946121-17-1

3-(5-chloro-2-methoxy-benzenesulfonyl)-2,3-dihydro-benzooxazole-5-carboxylic acid methyl ester

Conditions
ConditionsYield
With potassium carbonate In N,N-dimethyl-formamide at 80℃; for 48h;99%
indium(I) bromide

indium(I) bromide

dimethyl sulfoxide
67-68-5

dimethyl sulfoxide

1,2-dibromomethane
74-95-3

1,2-dibromomethane

Br2InCH2Br*3(CH3)2SO
99666-59-8

Br2InCH2Br*3(CH3)2SO

Conditions
ConditionsYield
In dimethyl sulfoxide DMSO added to suspn. of InBr in CH2Br2 at ca. -80°C, allowed to reach room temp. with stirring, further stirred for 1 h; evapd. in vac., oil solidified on stirring with petroleum ether, solid washed with Et2O, dried in vac.; elem. anal.;99%
(CoH(NC5H4CH2CH2NHCH(CH3)C(CH3)NO)2)(2+)
185411-43-2

(CoH(NC5H4CH2CH2NHCH(CH3)C(CH3)NO)2)(2+)

1,2-dibromomethane
74-95-3

1,2-dibromomethane

((CH2)Co(NC5H4CH2CH2NHCH(CH3)C(CH3)NO)2)(1+)*ClO4(1-)=((CH2)Co(NC5H4CH2CH2NHCH(CH3)C(CH3)NO)2)ClO4
377734-77-5

((CH2)Co(NC5H4CH2CH2NHCH(CH3)C(CH3)NO)2)(1+)*ClO4(1-)=((CH2)Co(NC5H4CH2CH2NHCH(CH3)C(CH3)NO)2)ClO4

Conditions
ConditionsYield
With NaBH4; PdCl2; NaOH In methanol; water soln. NaOH was added to suspn. Co(III) complex in MeOH under Ar, NaBH4 in water was added, PdCl2 in aq. HCl was added, after 15 min CH2Br2 was added;99%
[Rh(triphenylphosphine)(C5Me5)((2,4,6-tri-tert-butylphenyl)phosphinidene)]
532932-53-9

[Rh(triphenylphosphine)(C5Me5)((2,4,6-tri-tert-butylphenyl)phosphinidene)]

1,2-dibromomethane
74-95-3

1,2-dibromomethane

(η5-C5Me5)Rh{PPh3}Br2

(η5-C5Me5)Rh{PPh3}Br2

Conditions
ConditionsYield
In pentane byproducts: ((CH3)3C)3C6H2PCH2; (N2 or Ar); treatment of soln. of Rh(PPh3)(C5Me5)(PC6H2(t-Bu)3) in n-pentane with small excess of CH2Br2 at room temp. for 12 h; pptn., decanting, washing with n-pentane;99%
triisopropylsilyl chloride
13154-24-0

triisopropylsilyl chloride

1,2-dibromomethane
74-95-3

1,2-dibromomethane

(dibromomethyl)triisopropylsilane

(dibromomethyl)triisopropylsilane

Conditions
ConditionsYield
With lithium diisopropyl amide In tetrahydrofuran at -78 - 20℃; Inert atmosphere;99%
With lithium diisopropyl amide In tetrahydrofuran at -78 - 20℃;99%
(S)-6,6'-dimethyl-5,5'-dibromo-2,2'-dihydroxybiphenyl

(S)-6,6'-dimethyl-5,5'-dibromo-2,2'-dihydroxybiphenyl

1,2-dibromomethane
74-95-3

1,2-dibromomethane

C15H12Br2O2

C15H12Br2O2

Conditions
ConditionsYield
With potassium carbonate In acetonitrile for 4h; Reflux;99%
ethyl N-(2-iodophenyl)-N-(2-phenylacryloyl)glycinate

ethyl N-(2-iodophenyl)-N-(2-phenylacryloyl)glycinate

1,2-dibromomethane
74-95-3

1,2-dibromomethane

ethyl 2-(2'-oxo-2,3-dihydrospiro[indene-1,3'-indolin]-1'-yl)acetate

ethyl 2-(2'-oxo-2,3-dihydrospiro[indene-1,3'-indolin]-1'-yl)acetate

Conditions
ConditionsYield
With palladium diacetate; tetra-(n-butyl)ammonium iodide; potassium carbonate; triethylamine; tris-(o-tolyl)phosphine In N,N-dimethyl acetamide at 90℃; for 12h; Schlenk technique; Inert atmosphere; Sealed tube;99%
N-benzyl-N-(2-iodophenyl)-2-phenylacrylamide

N-benzyl-N-(2-iodophenyl)-2-phenylacrylamide

1,2-dibromomethane
74-95-3

1,2-dibromomethane

1'-benzyl-2,3-dihydrospiro[indene-1,3'-indolin]-2'-one

1'-benzyl-2,3-dihydrospiro[indene-1,3'-indolin]-2'-one

Conditions
ConditionsYield
With palladium diacetate; tetra-(n-butyl)ammonium iodide; potassium carbonate; triethylamine; tris-(o-tolyl)phosphine In N,N-dimethyl acetamide at 90℃; for 12h; Schlenk technique; Inert atmosphere; Sealed tube;99%
ethoxyethoxyethanol
111-90-0

ethoxyethoxyethanol

1,2-dibromomethane
74-95-3

1,2-dibromomethane

1,13-diethoxy-3,6,8,11-tetraoxa-tridecane
42598-91-4

1,13-diethoxy-3,6,8,11-tetraoxa-tridecane

Conditions
ConditionsYield
With potassium hydroxide; tetrabutylammomium bromide In water; chlorobenzene at 50℃; for 0.5h;98.58%
methyl 3-methylbutanoate
556-24-1

methyl 3-methylbutanoate

1,2-dibromomethane
74-95-3

1,2-dibromomethane

l-methyl dl-2,2-dimethylcyclopropane-1-carboxylate
932-58-1, 89312-78-7, 172419-34-0

l-methyl dl-2,2-dimethylcyclopropane-1-carboxylate

Conditions
ConditionsYield
With acetyl chloride; copper(l) chloride In dichloromethane for 12h; Reagent/catalyst; Reflux;98.2%
benzoic acid
65-85-0

benzoic acid

1,2-dibromomethane
74-95-3

1,2-dibromomethane

bis(benzoyloxy)methane
5342-31-4

bis(benzoyloxy)methane

Conditions
ConditionsYield
With anion exchange resin for 5h; Heating;98%
With sodium hydroxide

Dibromomethane Chemical Properties


IUPAC Name: Dibromomethane 
Empirical Formula: CH2Br2
Molecular Weight: 173.8346
Canonical SMILES: C(Br)Br
InChI: InChI=1S/CH2Br2/c2-1-3/h1H2
InChIKey: FJBFPHVGVWTDIP-UHFFFAOYSA-N
EINECS: 200-824-2
Product Categories: Pharmaceutical Intermediates; Organics; alpha,omega-Bifunctional Alkanes; alpha,omega-Dibromoalkanes; Monofunctional & alpha,omega-Bifunctional Alkanes; Analytical Chemistry; Standard Solution of Volatile Organic Compounds for Water & Soil Analysis; Standard Solutions (VOC); Alpha Sort; BromoVolatiles/ Semivolatiles; Chemical Class; D; DAlphabetic; DIA - DIC; Halogenated 
storage temp.: Refrigerator
Water Solubility: 0.1 g/100 mL (20 ºC) 
Stability: Stable. Incompatible with strong oxidizing agents, aluminium, magnesium. Reacts violently with potassium. 
Index of Refraction: 1.532
Molar Refractivity: 22.14 cm3
Molar Volume: 71.4 cm3
Surface Tension: 37 dyne/cm
Density: 2.434 g/cm3
Flash Point: 96-98 °C
Enthalpy of Vaporization: 32.92 kJ/mol
Boiling Point: 97 °C at 760 mmHg
Vapour Pressure: 48.7 mmHg at 25 °C
Appearance: colourless liquid
Melting Point: -52 °C
Classification Code of Dibromomethane (CAS NO.74-95-3): Mutagens; Mutation data; Noxae; TSCA Flag T [Subject to the Section 4 test rule under TSCA]

Dibromomethane Uses

 Dibromomethane (CAS NO.74-95-3) is used as a solvent, gage fluid and in organic synthesis.

Dibromomethane Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 subcutaneous 3738mg/kg (3738mg/kg)   Toxicology and Applied Pharmacology. Vol. 4, Pg. 354, 1962.
rabbit LD50 oral 1gm/kg (1000mg/kg)   Dow Chemical Company Reports. Vol. MSD-472,
rabbit LD50 skin > 4gm/kg (4000mg/kg)   Dow Chemical Company Reports. Vol. MSD-472,
rabbit LDLo rectal 5gm/kg (5000mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS

LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION
Journal of Pharmacology and Experimental Therapeutics. Vol. 34, Pg. 223, 1928.
rat LC50 inhalation 40gm/m3/2H (40000mg/m3)   "Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982Vol. -, Pg. 83, 1982.
rat LD50 oral 108mg/kg (108mg/kg)   National Technical Information Service. Vol. PB85-143766

Dibromomethane Consensus Reports

Community Right-To-Know List. Reported in EPA TSCA Inventory.

Dibromomethane Safety Profile

Hazard Codes:  HarmfulXn,ToxicT,FlammableF
Risk Statements:  20-52/53-39/23/24/25-23/24/25-11 
R20:Harmful by inhalation. 
R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 
R39:Danger of very serious irreversible effects. 
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed. 
R11:Highly flammable.
Safety Statements:  24-61-45-36/37-16-7 
S24:Avoid contact with skin. 
S61:Avoid release to the environment. Refer to special instructions / safety data sheets. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S36/37:Wear suitable protective clothing and gloves. 
S16:Keep away from sources of ignition. 
S7:Keep container tightly closed.
RIDADR:UN 2664 6.1/PG 3
WGK Germany:  2
RTECS:  PA7350000
HazardClass:  6.1
PackingGroup:  III
A poison. Moderately toxic by subcutaneous route. Mildly toxic by inhalation. Mutation data reported. Mixtures with potassium explode on light impact. When heated to decomposition it emits toxic fumes of Br.

Dibromomethane Standards and Recommendations

DOT Classification:  6.1; Label: KEEP AWAY FROM FOOD

Dibromomethane Specification

  Dibromomethane (CAS NO.74-95-3), its Synonyms are Methylene bromide ; Methane, dibromo- ; Methylene bromide ; Methylene dibromide .

Post buying leads

About|Contact|Cas|Product Name|Molecular|Country|Encyclopedia

Message|New Cas|MSDS|Service|Advertisement|CAS DataBase|Article Data|Manufacturers | Chemical Catalog

©2008 LookChem.com,License: ICP

NO.:Zhejiang16009103

complaints:service@lookchem.com Desktop View