| Identification | More | [Name]
PROPARGYLTRIPHENYLPHOSPHONIUM BROMIDE | [CAS]
2091-46-5 | [Synonyms]
2-PROPINYL-TRIPHENYLPHOSPHONIUM BROMIDE
2-PROPYNYLTRIPHENYLPHOSPHONIUM BROMIDE
PROPARGYLTRIPHENYLPHOSPHONIUM BROMIDE
TRIPHENYL(2-PROPYNYL)PHOSPHONIUM BROMIDE
TRIPHENYLPROPARGYLPHOSPHONIUM BROMIDE
prop-2-ynyltriphenylphosphonium bromide
PROPARGYLTRIPHENYLPHOSPHONIUM BROMIDE, 9 8%
(2-propyn-1-yl)triphenylphosphonium bromide
triphenyl-2-propyn-1-ylphosphonium bromide
PROPARGYLTRIPHENYHLPHOSPHONIUM BROMIDE
PROPARGYLTRIPHENYLPHOSPHONIUM BROMIDE,99+% | [EINECS(EC#)]
218-242-2 | [Molecular Formula]
C21H18BrP | [MDL Number]
MFCD00011811 | [Molecular Weight]
381.25 | [MOL File]
2091-46-5.mol |
| Safety Data | Back Directory | [Hazard Codes ]
Xn | [Risk Statements ]
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37:Wear suitable protective clothing and gloves . | [RIDADR ]
UN 2811 6.1/PG 3
| [WGK Germany ]
3
| [HS Code ]
2931.90.6000 |
| Hazard Information | Back Directory | [Chemical Properties]
WHITE TO SLIGHTLY YELLOW FINE CRYSTALLINE POWDER | [Uses]
Propargyltriphenylphosphonium bromide can be used in the alcylation of amines. It is a commonly used as a Wittig reagent. | [Preparation]
Propargyltriphenylphosphonium bromide is readily available from Triphenylphosphine and propargyl bromide (see Propargyl Chloride) (eq 1). The presence of hydrogen bromide is absolutely necessary, otherwise the base Ph3P causes the formation of tarry products.
 | [Purification Methods]
It recrystallises from 2-propanol as white plates. It also crystallises from EtOH with m 156-158o. IR has max 1440, 1110cm1 (P-C str). [Elter & Dediger Justus Liebigs Ann Chem 682 62 1965, Schweizer et al. J Org Chem 42 200 1977]. |
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