Sometimes. If the product lacks a plane of symmetry, then it is chiral. If there is a plane of symmetry, then it is achiral.
Yes, They have a conjugated double bonds that will react with a dienophile
Although thiophene is a heterocyclic conjugated diene with a thiol electron withdrawing group, it displays aromatic properties. This compound would definitely not undergo a diels-alder reaction since...
reaction conditions are the conditions needed for a certain reaction to take place,hope this helps:)
450Celsius vanadium(5)oxide one atmospheric pressure