Conjugation

Question 1

Covalent bonds … stability in a structure

Answer 1

increases

Question 2

Charge separation … stability in a structure

Answer 2

decreases

Question 3

Negative charge is more stable on …

Answer 3

an electronegative atom

Question 4

Why must resonance structures be planar?

Answer 4

In order for the p-orbitals to overlap they must be oriented the same way

Question 5

How stable is an allyl cation?

Answer 5

More stable than secondary, less than tertiary (but similar)

Question 6

With resonance, only … and … electrons are moved

Answer 6

pi bond

lone pair

Question 7

What is favored at low temperatures?

Answer 7

Kinetic products (1,2 addition)

Question 8

What is favored at high temperatures?

Answer 8

Thermodynamic products (1,4 addition)

Question 9

Are thermodynamic or kinetic products more stable?

Answer 9

Thermodynamic

Question 10

What is a Diels-Alder reaction?

Answer 10

A conjugated diene reacts with a dienophile (that has a double bond)

Question 11

What type of reaction is a Diels-Alder reaction?

What does this mean?

Stereochemistry

Answer 11

A syn addition

Configuration is retained in the product