Ibuprofen is one of the most common anti-inflammatory drugs....

Name: Problem 111, Chapter 15: CHEMISTRY: The Molecular Nature of Matter and Change
Uploaded: 2020-11-18T05:06:06-08:00
Duration: 3 min 38 s
Channel: Zubair Abdulla
Description: Ibuprofen is one of the most common anti-inflammatory drugs. (a) Identify the functional group(s) and chiral center(s) in ibuprofen. (b) Write a four-step synthesis of a racemic mixture of ibuprofen from 4 -isobutylbenzaldehyde, using inorganic reactants and one organometallic reactant (see Problem 15.105 ).

Ibuprofen is one of the most common anti-inflammatory drugs. (a) Identify the functional group(s) and chiral center(s) in ibuprofen. (b) Write a four-step synthesis of a racemic mixture of ibuprofen from 4 -isobutylbenzaldehyde, using inorganic reactants and one organometallic reactant (see Problem 15.105 ).

Key Concepts

Organometallic Reagents

Organometallic reagents, such as those used in Grignard reactions, are compounds that contain metal-carbon bonds and are powerful tools in forming new carbon-carbon bonds. Their reactivity allows for the construction of complex molecules from simpler ones by adding carbon fragments to electrophilic centers.

Retrosynthetic Analysis

Retrosynthetic analysis is the process of deconstructing a target molecule into simpler precursor structures in order to design a feasible synthetic pathway. This approach is key in organic synthesis, allowing chemists to work backwards from the desired molecule, identify strategic bonds to break, and choose appropriate reactions for construction.

Synthetic Strategy

A synthetic strategy outlines the planned sequence of chemical reactions to transform readily available starting materials into a target molecule. This involves selecting appropriate reaction types, such as oxidation, nucleophilic addition, and rearrangements, while considering the overall yield, selectivity, and control of stereochemistry.

Chiral Centers

Chiral centers are atoms in a molecule, most commonly carbon, that are attached to four different substituents, leading to non-superimposable mirror images known as enantiomers. Recognizing chiral centers is essential to understanding stereochemistry, as they influence the physical, chemical, and biological properties of a compound.

Functional Groups

Functional groups are specific groups of atoms within molecules that have characteristic reactivity and properties. In organic molecules, identifying functional groups—such as carboxylic acids, alcohols, and aromatic rings—is crucial because they determine the chemical behavior, reactivity patterns, and interactions of the molecule with other reagents.

Racemic Mixtures

A racemic mixture is a 1:1 mixture of two enantiomers of a chiral molecule. Racemates are significant in synthesis and pharmaceutical contexts because the biological activity can differ between enantiomers, and the overall properties of the mixture can differ from those of pure enantiomeric forms.

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