
Trish Megistos |

No.
The additional attack from haste is only available as part of a Full Round (Attack) Action.
Haste wrote:
When making a full attack action, a hasted creature may make one extra attack with one natural or manufactured weapon. The attack is made using the creature’s full base attack bonus, plus any modifiers appropriate to the situation. (This effect is not cumulative with similar effects, such as that provided by a speed weapon, nor does it actually grant an extra action, so you can’t use it to cast a second spell or otherwise take an extra action in the round.)