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Methyl triphenyl phosphonium bromide

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Name

Methyl triphenyl phosphonium bromide

EINECS 217-218-9
CAS No. 1779-49-3 Density N/A
PSA 13.59000 LogP 0.61430
Solubility 400 g/L in water at 25 °C Melting Point 230-234 °C(lit.)
Formula C19H18P·Br Boiling Point N/A
Molecular Weight 357.23 Flash Point >240°C
Transport Information UN 1390 4.3/PG 2 Appearance white powder
Safety 36/37-26 Risk Codes 20/21/22-36/37/38
Molecular Structure Molecular Structure of 1779-49-3 (Methyltriphenylphosphonium bromide) Hazard Symbols HarmfulXn,IrritantXi
Synonyms

Methyltriphenylphosphonium bromide;Methyl(triphenyl)phosphonium bromide;Triphenylmethylphosphonium bromide;Phosphonium, methyltriphenyl-, bromide;

Article Data 45

Methyl triphenyl phosphonium bromide Synthetic route

1125-88-8

benzaldehyde dimethyl acetal

6399-81-1

triphenylphosphine hydrobromide

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
100%
67-56-1

methanol

603-35-0

triphenylphosphine

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
With hydrogen bromide at 110℃; for 8h;99.2%
With hydrogen bromide at 110℃; for 15h;97%
With hydrogen bromide In water at 120℃; for 22.5h;97%
74-83-9

methyl bromide

603-35-0

triphenylphosphine

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
In benzene at 20℃; for 4h;99%
In benzene for 48h; Ambient temperature;95%
In acetonitrile
74-83-9

methyl bromide

829-85-6

diphenylphosphane

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
In benzene99%
6399-81-1

triphenylphosphine hydrobromide

149-73-5

trimethyl orthoformate

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
at 75℃; for 0.75h; Inert atmosphere; neat (no solvent);99%
at 70℃;70%
1314805-21-4

methyl N-acetyl-α-triphenylphosphoniumglycinate bromide

A

1314805-28-1

(N-Acetylamino)methyltriphenylphosphonium bromide

B

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
Stage #1: methyl N-acetyl-α-triphenylphosphoniumglycinate bromide at 25℃; under 1 - 2 Torr; for 1h;
Stage #2: With triphenylphosphine hydrobromide; triphenylphosphine at 100 - 115℃; for 1h;
A 98.6%
B 87%
603-35-0

triphenylphosphine

149-73-5

trimethyl orthoformate

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
With ammonium bromide at 110℃; for 4h; Sealed tube;96%
With ammonium bromide at 110℃; for 12h;96%
With cis,trans-24-bromotetracos-12-enal ethylene acetal

methyl N-benzoyl-α-triphenylphosphonioglycinate bromide

A

498572-96-6

C20H18N2O6

B

1779-49-3

Methyltriphenylphosphonium bromide

C

28387-29-3

α-(N-benzoylamino)methyltriphenylphosphonium bromide

Conditions
ConditionsYield
Stage #1: methyl N-benzoyl-α-triphenylphosphonioglycinate bromide at 25℃; under 1 - 2 Torr; for 1h;
Stage #2: With triphenylphosphine hydrobromide; triphenylphosphine at 110 - 120℃; for 1h;
A 6.2%
B 81%
C 89.1%
1314805-22-5

Br(1-)*C26H29NO3P(1+)

A

1314805-30-5

Br(1-)*C24H27NOP(1+)

B

1779-49-3

Methyltriphenylphosphonium bromide

Conditions
ConditionsYield
Stage #1: Br(1-)*C26H29NO3P(1+) at 25℃; under 1 - 2 Torr; for 1h;
Stage #2: With triphenylphosphine hydrobromide; triphenylphosphine at 120℃; for 1.5h;
A 78.7%
B 44.5%
19320-74-2

Se-phenacyldimethylselenonium bromide

603-35-0

triphenylphosphine

A

3878-44-2

Triphenylphosphine selenide

B

19859-29-1

2-(methylselanyl)-1-phenylethan-1-one

C

1779-49-3

Methyltriphenylphosphonium bromide

D

6048-29-9

triphenylphenacylphosphonium bromide

Conditions
ConditionsYield
In benzene for 6h; Heating; Further byproducts given;A 7.3%
B n/a
C 13%
D 73%

Methyl triphenyl phosphonium bromide Specification

The Phosphonium,methyltriphenyl-, bromide (1:1), with the CAS registry number 1779-49-3, is also known as Triphenylmethylphosphonium bromide. It belongs to the product categories of Phosphonium Compounds; Synthetic Organic Chemistry; Wittig & Horner-Emmons Reaction; Wittig Reaction; C-C Bond Formation; Olefination; Wittig Reagents; Organophosphorus compound. Its EINECS number is 217-218-9. This chemical's molecular formula is C19H18P·Br and molecular weight is 357.22. What's more, its systematic name is Methyl(triphenyl)phosphonium bromide. This chemical is stable at common pressure and temperature, and it should be sealed and stored in a cool and dry place. Moreover, it should be protected from heat and fire.

Preparation of Phosphonium,methyltriphenyl-, bromide (1:1): this chemical can be prepared by triphenylphosphane and bromomethane at the ambient temperature. This reaction will need solvent benzene with the reaction time of 2 days. The yield is about 95%.

Phosphonium,methyltriphenyl-, bromide (1:1) can be prepared by triphenylphosphane and bromomethane at the ambient temperature

Uses of Phosphonium,methyltriphenyl-, bromide (1:1): it can be used to produce 9-isopropenyl-phenanthrene. It will need reagent NaNH2 and solvent tetrahydrofuran. The yield is about 94%.

Phosphonium,methyltriphenyl-, bromide (1:1) can be used to produce 9-isopropenyl-phenanthrene

When you are using this chemical, please be cautious about it as the following:
This chemical is harmful by inhalation, in contact with skin and if swallowed. It is irritating to eyes, respiratory system and skin and can cause burns. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing and gloves.

You can still convert the following datas into molecular structure:
(1)SMILES: [Br-].c1(ccccc1)[P+](c2ccccc2)(c3ccccc3)C
(2)Std. InChI: InChI=1S/C19H18P.BrH/c1-20(17-11-5-2-6-12-17,18-13-7-3-8-14-18)19-15-9-4-10-16-19;/h2-16H,1H3;1H/q+1;/p-1
(3)Std. InChIKey: LSEFCHWGJNHZNT-UHFFFAOYSA-M

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