Mechanisms Flashcards
Nucleophilic substitution
Halogenoalkane to either an alcohol, nitrile, amine
-:OH
-:CN
:NH3
NaOH, KOH. NaCN, KCN - ethanolic, heated
*excess ammonia and pressure
*aqueous hydroxide
Free Radical Substitution
Cl2 ——> 2Cl.
UV light
Above 450 degrees
Elimination
Double bond forms
NaOH or KOH - ethanolic
Adjacent Hydrogen
Elimination of Alcohols
Dehydration
alcohol > alkene
Concentrated sulphuric acid
Heated
Electrophilic addition
Breaks double bond
With H-Br, Br-Br, or alkyl sulfate
forms carbocations
Addition with alcohol
Hydration
Alkene to alcohol
double bond brakes
Steam
Sulphuric acid catalyst
Nucleophilic addition
aldehyde or ketone back to alcohol
breaks double bond
can form optical isomers
Sodium borohydride (-:H)
or KCN, HCN
Slightly acidic solution
Nucleophilic addition elimination
Acyl chloride to alcohol or amine