Organic Chemistry Free Radicals & Diels Alder Cycloaddition Reactions (DAT)

List the three steps of a free radical reaction

initiation, propagation, termination

Covalent bond breaking to form two radicals

initiation

One radical reacting with a stable molecule to form another radical

propagation

Two radicals reacting to form a stable molecule

termination

R + Br₂ and hv —> Br to the ___ substituted carbon

more

R + Br₂ and hv —> Br to the ___ substituted carbon

mixture of more and less

The least stable free radical

vinylic

List the three most stable free radicals

tertiary, allylic, benzylic

What are the products of this reaction

Benzylic bromination only occurs if there is a benzylic ___ present

hydrogen

What is the product of the following reaction

What other reagents work for the following reaction

Br2, hv

When both substituents point away from a bridgehead, it is called the ___ product

endo

When both substituents point toward the bridgehead, it is called the ___ product

exo

Which product is favored: endo or exo?

endo

When HBr is added to a diene, the product can be ___ or ___

kinetic or thermodynamic

The kinetic product is a ___, ___-addition (#)

1,2

The ___ product is formed with low activation energy

kinetic

The ___ product is formed in cold temperatures

kinetic

The ___ product is less stable

kinetic

The thermodynamic product is a ___, ___-addition (#)

1,4

The ___ product is formed with high activation energy

thermodynamic

The ___ product is formed in warm temperatures

thermodynamic

The ___ product is more stable

thermodynamic