Anhydrides are more reactive than esters. Choose all reasons of why anhydrides a

Question

Anhydrides are more reactive than esters. Choose all reasons of why anhydrides are more reactive than esters.

1) The two carbonyl groups make the oxygen more electronegative.

2) The lone pair/?* orbital interaction is decreased because the electrons on the oxygen are distributed over two carbonyl groups.

3) The central oxygen electronegativity increases the electrophilicity of the carbonyl carbons.

4) A carboxylate is a much weaker base than an alkoxide because of conjugation of the lone electron pair on the negatively charged oxygen with the carbonyl group

1 and 2

3 and 4

2 and 4

1,2 and 3

2,3 and 4

Which statements are correct concerning the reason why thioesters are more reactive to acyl substitution than esters?

Which compound will react with phosgene to produce the following polycarbonate?

1,2-Propanediol

1,3-Propanediol

1,2-Ethanediol

1,2-Diaminoethane

Explanation / Answer

Question 1.

The statements 2, 3 and 4 are correct.

Question 2.

The statements 1 and 2 are correct.

Question 3.

The correct answer is 1,2-propanediol

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