157449

β-Bromostyrene

97%

• Sinonimo/i: beta-Bromostyrene, 1-Bromo-2-phenylethylene
• Formula condensata: C₆H₅CH=CHBr
• Numero CAS: 103-64-0
• Peso molecolare: 183.05
• Beilstein: 2038495
• Numero CE: 203-131-3
• Numero MDL: MFCD00000185
• Codice UNSPSC: 12352100
• ID PubChem: 24849679
• NACRES: NA.22

Proprietà

• Livello qualitativo: 100
• Saggio: 97%
• Stato: liquid
• Indice di rifrazione: n20/D 1.607 (lit.)
• P. ebollizione: 110-112 °C/20 mmHg (lit.)
• Punto di fusione: 7 °C (lit.)
• Densità: 1.427 g/mL at 25 °C (lit.)
• Gruppo funzionale: bromo; phenyl
• Temperatura di conservazione: 2-8°C
• Stringa SMILE: Br\C=C\c1ccccc1
• InChI: 1S/C8H7Br/c9-7-6-8-4-2-1-3-5-8/h1-7H/b7-6+; YMOONIIMQBGTDU-VOTSOKGWSA-N

Descrizione

Descrizione generale

β-Bromostyrene is an α,β-unsaturated aromatic halide. It can be synthesized by catalytic Hunsdiecker reaction (CHR) of cinnamic acid. It is commonly utilized as a precursor for preparing substituted alkenes, corresponding acetylenes and also in the total synthesis of natural compounds and antibiotics.

Applicazioni

β-Bromostyrene was used in the one-pot method for the preparation of cinnamonitriles. It was also used in the preparation of pure ethyl Z- and E-α,α-difluoro-4-phenyl-3-butenoate and 1,3-diphenyl-1-butene. It may be used in the synthesis of β-tert-butylstyrene via cross coupling reaction with tert-butylmagnesium chloride in the presence of dichloro[1,1′-bis(diphenylphosphino)ferrocene]nickel(II) catalyst. It may also be used to prepare γ-but-2-enolactone by reacting with nickel carbonyl in the presence of alkynes.

Informazioni sulla sicurezza

• Pittogrammi: GHS07
• Avvertenze: Warning
• Indicazioni di pericolo: H302
• Classi di pericolo: Acute Tox. 4 Oral
• Codice della classe di stoccaggio: 10 - Combustible liquids
• Classe di pericolosità dell'acqua (WGK): WGK 3
• Punto d’infiammabilità (°F): 215.6 °F - closed cup
• Punto d’infiammabilità (°C): 102 °C - closed cup
• Dispositivi di protezione individuale: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter