Last Minute Reactions of compounds Flashcards
how can aldehydes be prepared
- alcohol with strong oxidising agent
- ozonolysis of alkene
what is a strong oxidising agent of alcohols to make aldehydes
pyridinium chlorochromate (PCC)
CH2Cl2
when does ozonolysis do
what conditions are needed
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
what are the three ways ketones can be prepared
- secondary alcohol treated with an oxidising agent
- tetrasubstituted alkenes with cleaves to form ketones via ozonolysis
- aromatic rings react with acyl halide in lewis acid
what is friedel-crafts acylation
when an aromatic ring is reacted in the presence of a lewis acid WITH an acyl halide for the formation of an aryl ketone
what is type of ketone is formed from friedel-crafts acylation
aryl ketone
what oxidises easier - aldehydes of ketones
aldehydes
what undergoes nucleophilic substitution easier - aldehydes of ketones
aldehydes
how do hemiacetals and hemiketals get made
aldehydes = acetals
ketones = ketals
how do aldehydes become acetals
dissolve in primary alcohol
how do ketones become ketals
dissolve in primary alcohol
how can a hemiacetal turn into a full acetal
in the presence of an acid catalyst
how can a hemiketal turn into a full ketal
in the presence of an acid catalyst
