The halide shown is converted to its Grignard reagent with magnesium in dry ether; the reagent is poured over solid CO2 and the mixture is acidified with dilute HCl. Which structure is the organic product?

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The halide shown is converted to its Grignard reagent with magnesium in dry ether; the reagent is poured over solid $CO X_{2}$ and the mixture is acidified with dilute HCl. Which structure is the organic product?

AStructure A
BStructure B
CStructure C
DStructure D

Answer: A

Ethylmagnesium bromide adds to CO2 to give a carboxylate salt, which dilute acid converts to the acid. The carbon chain grows by one carbon: ethyl bromide gives propanoic acid.

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Answer: A

More questions on Grignard reagent products from drawn halides

The halide shown is converted to its Grignard reagent with magnesium in dry ether; the reagent is poured over solid $CO X_{2}$ and the mixture is acidified with dilute HCl. Which structure is the organic product?