The Chemistry of Arynes (Benzyne)

The video tutorial explores the chemistry of airines, focusing on their structure, reactivity, and methods of production. It highlights the work of chemists like Georg Vidig and John Roberts, who contributed to understanding benzine intermediates. The tutorial also covers the reactivity of airines, including their tendency to undergo cycloaddition reactions and their use in synthetic applications.

What is the main reason a true triple bond cannot form in benzine?

• The presence of a double bond

• The presence of a single bond

• Torsional strain from the benzene ring

• Lack of sufficient electrons

How did John Roberts confirm the existence of benzine intermediates?

• By using a spectrometer

• Through isotopic labeling experiments

• Through crystallization

• By observing color changes

Which compound can be used to produce benzine through diazotization and decarboxylation?

• Phenylithium

• Chlorobenzene

• Anthranilic acid

• Fluorobenzene

What is a common feature in methods of producing benzine?

• Use of a strong acid

• Formation of a carbon ion adjacent to a leaving group

• Presence of a metal catalyst

• Formation of a double bond

Why are benzines typically not isolated?

• They are too reactive

• They are too large

• They are too stable

• They are too expensive

What type of reaction does benzine undergo in the absence of nucleophiles?

• Reduction

• Oxidation

• Cycloaddition

• Hydrogenation

In a Diels-Alder reaction, what role does benzine play?

• Diene

• Dienophile

• Catalyst

• Inhibitor