Allyl bromide

Allyl bromide

Colorless to yellowish foul-smelling fluid

Liquid

1.40 g · cm -3 ( 20 ° C)

-119.4 ° C

70 ° C.

150 hPa ( 20 ° C)

Sparingly soluble in water

1.4697 (20 ° C)

Risk

12.2 kJ / mol

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3- bromopropene (common name: allyl bromide ) is an organic chemical compound from the group of alkyl halides.

Production and representation

The synthesis of 3 - bromopropene possible on a laboratory scale in a SN1' reaction of allyl alcohol and hydrobromic acid. The OH group of the allyl alcohol is first protonated and the elimination of water results in a allyl cation, which then reacts with a bromide ion to the product. The product can be isolated by extraction and purified by distillation.

Properties

3- bromopropene is a colorless, oily liquid with a characteristic sweet, slightly pungent odor. In moist air it hydrolyzes very slowly to hydrogen bromide and allyl alcohol. Suitable alkylating agents can damage the body long term and is therefore classified as toxic.

Use

3- bromopropene is usually used in organic synthetic chemistry for the introduction of the allyl group which is a protective group commonly used for alcohols and amines.