Complete the following reaction sequence by drawing in the neutral reagents and products where necessary. the product of this reaction has a molecular formula of c7h6o2 and has a 1h nmr spectrum (cdcl3) of ~12.1 (s), 8.1 (m), and 7.6–7.4 (m) ppm. *show covalent bonds in all compounds.

Benzoic acid

Explanation:

In this case we have a Grignard reaction in which we go from a formula of C6H5Br to C7H6O2. In other words, we add 1 carbon to the molecule. The only way to add one carbon to this molecule is using as a reagent. When this compound is used as electrophile a carboxylic acid is produced.

Respect to the NMR info, we have a downfield singlet signal at 12.1 ppm which is characteristic of the acid hydrogens in the carboxylic acids (see figure 1). When a carboxylic group is added to the benzene we will obtain the benzoic acid which fits with the formula and the NMR info given.

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explanation:

gas

explanation:

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