Aldehyde & Ketone Rxns

Question 1

Primary alcohol to aldehyde (oxidation of alcohol)

Answer 1

+PCC
+ THF (solvent)

Question 2

Aldehyde to CA (Oxidation of alcohols)

Answer 2

+PCC
+ THF (solvent)

Question 3

Secondary alcohol to ketone (oxidation of alcohols)

Answer 3

+ oxidising reagent [O]

Question 4

Alcohol to CA (oxidation of alcohols)

Answer 4

+ Jones reagent —-
1. CrO3
2. H2SO4
3. H2O

Question 5

Alkene to 2 aldehydes (ozonolysis of alkenes)

Answer 5

1. +O3
2. +(CH3)2S
   IN ONE STEP

Question 6

Alkene to 2 ketones (ozonolysis of alkenes)

Answer 6

1. +O3
2. +(CH3)2S
   IN TWO STEPS

Question 7

Aldehyde/ ketone to alcohol (Grignard)

Answer 7

1. +RMgX
2. +H3O
   In TWO steps

Question 8

Aldehyde/ ketone to alcohol (reduction)

Answer 8

1. LaH/ NaBH4
2. +H3O
   In TWO steps

Question 9

Aldehyde/ ketone to Hemi acetal/ acetal (acetal formation)

Answer 9

+alcohol
+H3O

Question 10

Primary amine to imine (Imine formation)

Answer 10

+carbonyl group
+H3O

Question 11

Carbonyl group to Cyanohydrin (Cyanohydrin formation)

Answer 11

+NaCN
+H3O

Question 12

Aldehyde to Imine

Answer 12

1. Primary amide + aldehyde