Question

Find the reagents?

In each reaction box, place the best reagent and conditions from the list below. In each reaction box, place the best reagent and conditions from the list below.

Answer 1

Concepts and reason

The conversion of alkyl bromide to alcohol takes place. This conversion needs several steps to make a final product. The steps include protection of the functional group, the formation of Grignard reagent, and nucleophilic addition.

The conversion of carboxylic acid to imine takes place. This conversion undergoes several steps to attain final product. The steps include oxidation, reduction, and nucleophilic addition.

Fundamentals

Protecting group: when more functional groups are present in the compound, the chemical reaction undergoes selectively without disturbing other functional groups. Due to that, the other functional group is protected by some protecting reagent. At the end of the reaction, on acid workup, the protective group cleaves and forms the functional group that present in beginning.

Grignard reagent: Grignard reagent (R-Mg-X). R represents an alkyl group or aryl group. X represents halides (I, Br, Cl). The main purpose of Grignard reagent is the formation of new C –C bond. Grignard reagent undergoes reaction with carbonyl groups (like ketone (), Aldehyde (), Ester ($-C(=O)OR $)) to form an addition product.

Nucleophilic addition: the addition of electron rich nucleophile with electron deficient electrophiles. In this reaction, the double bond is converted into a single bond.

Oxidizing agents are the substances that gain electrons.(Example –)

Reducing agents are the substances that lose their electrons.(Example –)

Nucleophilic addition: the addition of electron rich nucleophile with electron deficient electrophiles. In this reaction, double bond is converted to single bond.

The reaction is:

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The reaction is:

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The reaction is:

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The reaction is:

The reaction is:

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