Organic Chemistry: Amino Groups and Heterocyclic Amines

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What is the general structure of amines?

R-OH

R-NH2 (correct)

R-CHO

R-COOH

What is the shape of the ammonia molecule?

Trigonal pyramidal (correct)

Tetrahedral

Linear

Trigonal planar

Why do tertiary amines have lower boiling points than primary and secondary amines?

They are more soluble in water

They have a larger molecular weight

They can form stronger hydrogen bonds

They cannot form hydrogen bonds with each other (correct)

What type of bond do amines form with hydrogen?

Hydrogen bond Signup and view all the answers

What is the main difference between amines and ammonia?

Amines have an R group, while ammonia does not Signup and view all the answers

What is the result of the reaction between a primary amine and an aldehyde or ketone?

Formation of an imine Signup and view all the answers

How are heterocyclic amines defined?

Cyclic compounds with at least one N in the ring Signup and view all the answers

What is the result of amines accepting H+ when dissolved in water?

Formation of an alkylammonium ion and hydroxide ions Signup and view all the answers

What is the purpose of decongestants, which are medically important amines?

To shrink the membranes lining the nasal passages Signup and view all the answers

How are amine salts named?

By replacing the suffix – amine with ammonium and adding the name of the anion Signup and view all the answers

What is one method of preparing amines?

Reduction of nitro compounds Signup and view all the answers

Why are amine salts often more soluble than the corresponding amines?

Because they are ionic and have a higher molecular weight Signup and view all the answers

What is the product of the reaction between an amine and an aldehyde or ketone in the presence of an acid catalyst?

An imine Signup and view all the answers

Which of the following compounds can be prepared by the reduction of an amide?

An amine Signup and view all the answers

What is the functional group found in the molecule acetaminophen (TYLENOL)?

An amide group Signup and view all the answers

Which of the following is a physiologically active amine?

Atorvastatin (Lipitor) Signup and view all the answers

What is the functional group found in the molecule p-hydroxyaniline?

A hydroxyl group and an amine group Signup and view all the answers

Organic Chemistry: Amino Groups and Heterocyclic Amines

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