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54770-27-3 - 1,2-Vinylenebis(triphenylphosphonium bromide) monohydrate, 98% - L00956 - Alfa Aesar

L00956 1,2-Vinylenebis(triphenylphosphonium bromide) monohydrate, 98%

Codice CAS
54770-27-3
Sinonimi

Dimensioni Prezzo ($) Quantità Disponibilità
10g 23,86
50g 92,74
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1,2-Vinylenebis(triphenylphosphonium bromide) monohydrate, 98%

MDL
MFCD00040548
EINECS
259-334-2

Proprietà chimiche

Formula
C38H32Br2P2•H2O
Peso formula
728.45 (710.44anhy)
Punto di fusione
ca 236-250°
Sensibilità
Hygroscopic

Letteratura

Conjugate addition of alcohols in the presence of triethylamine, followed by elimination and removal of the second phosphonium salt by base-induced cleavage, leads to vinyl ethers: Synthesis, 736 (1975). Similarly, other nucleophiles (e.g. phenols or thiols) can be used to replace one of the phosphonium groups by addition-elimination: Bull. Soc. Chim. Fr., 1421 (1974). With bifunctional nucleophiles, cyclization can occur to give an intermediate for the formylolefination of aldehydes by the Wittig reaction: Synthesis, 826 (1978):

/n

/n

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Dichiarazioni precauzionali: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Altri riferimenti

Beilstein
3583793
Codice tariffe armonizzato
2931.90
TSCA
No

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