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1-Brom-4-penten (CAS-Nr.: 1119-51-3)

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1-Brom-4-penten (CAS-Nr.: 1119-51-3)

1-Brom-4-penten (CAS-Nr.: 1119-51-3)

CAS NO.: 1119-51-3

Content:98.00%

Application: Used in the stereoselective synthesis of 7α-(3-carboxypropyl) estradiol, preparation of thioacetates like those in sialic acid derivatives, and recent syntheses of DL-histrionicotoxin and benzophenone-containing fatty acids. etc..

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Beschreibung

Produktübersicht

1-Bromo-4-pentene (also known as 5-Bromo-1-penteneor 4-Pentenyl bromide) CAS No.: 1119-51-3 , with the chemical formula C₅H₉Br and a molecular weight of 149.03 g/mol. It is a clear colorless to light yellow liquid. This compound belongs to the class of alkyl halides with an alkene group and is primarily used in organic synthesis and as a reagent, though it is subject to safety regulations due to its flammable and irritant properties.

Eigenschaften

5-Bromo-1-pentene exhibits the following key physical and chemical properties:

  • Physischer Zustand: Flüssig (bei Raumtemperatur).
  • Erscheinungsbild: Clear colorless to light yellow liquid.
  • Geruch: Not specified.
  • Schmelzpunkt: -106.7 °C (estimate).
  • Siedepunkt: 126-127 °C at 765 mmHg (lit.).
  • Dichte: 1.258 g/mL at 25 °C (lit.).
  • Löslichkeit: Insoluble in water; soluble in organic solvents like chloroform, ethanol, and ether.
  • Stabilität: Stable under normal conditions; incompatible with strong oxidizing agents; flammable.
  • Toxizität: Moderately toxic; causes skin irritation, eye irritation, and respiratory irritation; may cause dizziness, nausea, and central nervous system effects upon inhalation.

Anwendungen

The primary applications of 5-bromo-1-pentene include:

  • Organisches Synthese-Zwischenprodukt: Used in the stereoselective synthesis of 7α-(3-carboxypropyl) estradiol, preparation of thioacetates like those in sialic acid derivatives, and recent syntheses of DL-histrionicotoxin and benzophenone-containing fatty acids.
  • Reagenz: Employed in the production of pharmaceuticals, agrochemicals, fragrances, polymers, and as an analytical reagent.
  • Andere: Serves as a versatile building block in organic chemistry for introducing alkyl chains with functional groups.

Klassifizierung

The following table outlines the classification of 5-bromo-1-pentene based on chemical properties, uses, and regulations:

Klassifizierung Typ Besondere Kategorie Beschreibung
Chemische Klasse Alkyl Halide (Bromoalkene) An unsaturated bromoalkane, reactive in nucleophilic substitution and addition reactions.
Verwendungsklasse Organic Synthesis Reagent/Intermediate Primarily used as a reagent and intermediate in chemical synthesis.
Gefahrenklasse Flammable Liquid (UN 1993); Irritant Flammable (H225, flash point ~31 °C); skin irritant (H315), eye irritant (H319), respiratory irritant (H335); Packing Group III.
Regulatorische Klasse Controlled Chemical (REACH, TSCA) Listed under EU REACH and US TSCA; subject to environmental and safety controls (WGK 3 in Germany).

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