Ethynylmagnesium bromide solution
ALDRICH/346152 - 0.5 M in THF
Synonym: Acetylenemagnesium bromide; Bromoethynylmagnesium; Ethynylmagnesium bromide
CAS Number: 4301-14-8
Empirical Formula (Hill Notation): C2HBrMg
Molecular Weight: 129.24
MDL Number: MFCD00075342
Linear Formula: HC≡CMgBr
Product Type: Chemical
| concentration | 0.5 M in THF |
| density | 0.94 g/mL at 25 °C |
| InChI | 1S/C2H.BrH.Mg/c1-2;;/h1H; |
| InChI key | HUGJUYPSXULVQQ-UHFFFAOYSA |
| Quality Level | 200 ![]() |
| reaction suitability | reaction type: Grignard Reaction |
| SMILES string | Br[Mg]C#C |
| storage temp. | 2-8°C |
| Application: | Ethynylmagnesium bromide solution can be used in:• Grafting of aliphatic polymer. • Synthesis of anthracene-containing species like 1,8-dichloro-10-(ethynyl) • The preparation of the alkyne component in an enyne cross-metathesis leading to conjugated dienes. • Ethynylation of chiral α-(dibenzylamino) aldehydes. • The synthesis of ethynyl aziridines. • To prepare alkyl(triethynyl)germanes from tert-alkyltrichlorogermanes and 2-butyltrichlorogermane. • The preperation of a key intermediate in the total synthesis of (+)-4-demethoxydaunomycin |
| General description: | Ethynylmagnesium bromide solution, also known as bromoethynylmagnesium, is a grignard reagent that is commonly used in the synthesis of polymers, and unsaturated phosphonites. |
| Packaging: | 100, 800 mL in Sure/Seal™ |
| Symbol | ![]() ![]() ![]() GHS02,GHS05,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H225 - H261 - H302 - H314 - H335 - H336 - H351 |
| Precautionary statements | P201 - P210 - P231 + P232 - P280 - P303 + P361 + P353 - P305 + P351 + P338 + P310 |
| Hazard Codes | F,C |
| Risk Statements | 11-14/15-19-34-37 |
| Safety Statements | 9-16-26-36/37/39-43-45 |
| RIDADR | UN 3399BC 4.3(3) / PGII |
| WGK Germany | WGK 3 |
| Flash Point(F) | -20.2 °F |
| Flash Point(C) | -29 °C |
| Supplemental Hazard Statements | EUH018 - EUH019 |
| Density | 0.94 g/mL at 25 °C |
| Storage Temp. | 2-8°C |
| UNSPSC | 12352103 |





