Reactions with Organometallics Quiz

What are the two major classes of organometallics discussed in this lesson?

• Grignard and Gilman reagents

• Friedel-Crafts and Wittig reagents

• Sandmeyer and Suzuki reagents

• Heck and Stille reagents

What is the nature of the carbon-magnesium bond in Grignard reagents?

• Highly covalent

• Non-polar

• Significantly ionic

• Weakly polar

What is the key difference in the reaction of Grignard reagents with acid chlorides compared to ketones?

• No reaction occurs

• Formation of a tertiary alcohol

• Nucleophilic substitution followed by addition

• Direct nucleophilic addition

Why is it difficult to stop the reaction of Grignard reagents with esters after one equivalent?

• Esters are less reactive than ketones

• Esters have no leaving group

• Ketones formed are more reactive than esters

• Grignard reagents do not react with esters

What metal is present in Gilman reagents?

• Zinc

• Copper

• Magnesium

• Iron

Which carboxylic acid derivatives do Gilman reagents react with?

• All carboxylic acid derivatives

• Esters and ketones

• Acid chlorides and anhydrides

• Aldehydes and ketones

What is the main product when a Gilman reagent reacts with an acid chloride?

• Tertiary alcohol

• Primary alcohol

• Ketone

• Aldehyde

Why do Gilman reagents not react with ketones?

• They require a catalyst

• They form unstable intermediates

• They are not reactive enough

• They are too reactive

What is the primary difference in reactivity between Grignard and Gilman reagents?

• Gilman reagents react with more derivatives

• Grignard reagents react with more derivatives

• Gilman reagents are more reactive

• Grignard reagents are less reactive

What is the final product when Grignard reagents react with ketones?

• Aldehyde

• Tertiary alcohol

• Secondary alcohol

• Primary alcohol