Exam 3

Question 1

Order the following in order of low to high reactivity: O-R, S-R, NH2, C-X, C-R

Answer 1

NH2, O-R, S-R, C-R, C-X

Question 2

Carboxylic acid + DCC/R’-OH = ?

Answer 2

Ester: C-O-R’

Question 3

A molecule of benzene contains a carboxyl group on top and a NO2 group in the para position. The molecule is reacting with 1. BH3/ THF/ 2. H3O+. What group is changed to OH

Answer 3

The carboxyl group

Question 4

What is DIBAL-H used for

Answer 4

A source of hydrogen

Question 5

An OH group on “Malonic ester” when treated with water becomes what

Answer 5

It leaves as water and one of the hydrogens electrons make a carbon carbon double bond

Question 6

A carbo ion on “malonic diester” with 1 R group, when treated with H-Base produces what

Answer 6

The hydrogen is restored, the double bonds on oxygen do not change

Question 7

The double bonded oxygen on “malonic diester” with 2 R group, when treated with H3O+ produces what

Answer 7

A single bonded oxygen and a carbon carbon double bond