Last Minute Reactions of compounds

Question 1

how can aldehydes be prepared

Answer 1

1. alcohol with strong oxidising agent
2. ozonolysis of alkene

Question 2

what is a strong oxidising agent of alcohols to make aldehydes

Answer 2

pyridinium chlorochromate (PCC)

CH2Cl2

Question 3

when does ozonolysis do

what conditions are needed

Answer 3

cleaved carbon double bond of alkene with 03

conditions:
-original alkene carbon has to attach to other H atoms
-reducing agent such as dimethyl sulfide
-O3

Question 4

what are the three ways ketones can be prepared

Answer 4

1. secondary alcohol treated with an oxidising agent
2. tetrasubstituted alkenes with cleaves to form ketones via ozonolysis
3. aromatic rings react with acyl halide in lewis acid

Question 5

what is friedel-crafts acylation

Answer 5

when an aromatic ring is reacted in the presence of a lewis acid WITH an acyl halide for the formation of an aryl ketone

Question 6

what is type of ketone is formed from friedel-crafts acylation

Answer 6

aryl ketone

Question 7

what oxidises easier - aldehydes of ketones

Answer 7

aldehydes

Question 8

what undergoes nucleophilic substitution easier - aldehydes of ketones

Answer 8

aldehydes

Question 9

how do hemiacetals and hemiketals get made

Answer 9

aldehydes = acetals
ketones = ketals

Question 10

how do aldehydes become acetals

Answer 10

dissolve in primary alcohol

Question 11

how do ketones become ketals

Answer 11

dissolve in primary alcohol

Question 12

how can a hemiacetal turn into a full acetal

Answer 12

in the presence of an acid catalyst

Question 13

how can a hemiketal turn into a full ketal

Answer 13

in the presence of an acid catalyst