Question

When silver propionate is treated with br2 in ccl4 as solvent the product is

Answer 1

When silver propanoate is treated with bromine and carbon tetrachloride, the main products are alkyl bromide and silver bromide. But the basic product is alkyl bromide and the reaction is termed as Hunsdiecker Reaction.

The Hunsdiecker reaction takes place when a silver carboxylate is heated in CCl4(carbon tetrachloride) in the presence of bromine. In the initial step of the Hunsdiecker reaction, the silver carboxylate is converted into an acyl hypobromite through the action of bromine. The main driving force of this reaction step is the precipitation of the extremely poorly soluble and stable silver bromide. Subsequently, a radical chain reaction occurs. The chain initiation is the homolytic cleavage of the relatively weak oxygen-bromine bond. This yields a carboxyl radical and a bromine atom. The carboxyl radical decarboxylates spontaneously. This is the first propagation step of the chain reaction. The resulting alkyl radical, or hydrocarbon radical, abstracts a bromine atom from a further acyl hypobromite molecule. In this second propagation step, an alkyl bromide - the product - is formed and a carboxyl radical is recovered.

Answer 2

Answer:

Alkyl bromide and silver bromide are the major byproducts of the bromine and carbon tetrachloride treatment of silver propanoate.

Explanation:

Alkyl bromide is the primary end product, and the reaction is known as the Hunsdiecker Reaction. When a silver carboxylate is heated in CCl4 (carbon tetrachloride) with bromine present, the Hunsdiecker reaction occurs. In the first stage of the Hunsdiecker reaction, bromine transforms the silver carboxylate into an acyl hypobromite. Additionally known as the Hunsdiecker–Borodin or Borodin reaction. It serves as an illustration of a decarboxylation reaction as well as halogenation. The fairly weak oxygen-bromine bond is homolytically broken to start the chain. This produces a bromine atom and a carboxyl radical.

Thus, a bromine atom is removed from another acyl hypobromite molecule by the resultant alkyl radical, also known as a hydrocarbon radical.