How does Drunken Monkey interact with Savage Demise?

A PC (character A) in our game used Drunken Monkey on an enemy (character B). It hit and did the following:

Hit: 1d8 + Dexterity modifier damage, and you slide the target 1 square. The target then makes a melee basic attack as a free action against one enemy of your choice. The target gains a bonus to the attack roll equal to your Wisdom modifier.

The damage is enough to reduce the B's health below 0.

B is an orc and has the power Savage Demise:

Immediate Reaction
Trigger: You drop to 0 hit points.
Effect: (Free Action) You take a standard action.

It used this to attack A who killed it.

Does B still make a melee basic attack against another enemy of A's choice as per the description of Drunken Monkey?

As a bonus, does the B's action before death occur before or after the slide?

• As purely rule based answer this seems perfect. However would it make sense to house rule and modify the outcome of B's standard action. This is because Drunken Monkey's effect would suggest that B is affected temporarily and as an example could take a negative modifier to hit. Jul 20, 2017 at 11:51