L20-alkenes as electrophiles

What does an alpha beta unsaturated molecules look like

What is an allylic cation

a positive cation located next to a carbon - carbon double bond

The electrons in the double bond are able to delocalise onto the positive charge

On an alpha beta unsaturated molecules where is electrophilic and why

due to it being an example of an allylic cation the electrons can move

Draw the reaction mechanism between an alpha beta unsaturated ketone undergoing 1,2- addition/ direct addition

Draw the mechanism of 1,4 addition/conjugate addition of alpha beta unsaturated ketone

Think about theses compounds and it their alpha beta unsaturated version would readily react 1,2 or 1,4

What about alpha beta unsaturated molecules is bad

They are toxic

As they react with alcohols, amines and thios which are in the body as enzymes