how do I select unions into a temp table

I want to do something like this, but I can't seem to find the right syntax:

select * into temp tblDest where(
(select t0.*
from tblSource0 t0, tblExtension1 t1
where t0.colA = 1 and t0.oid_parent = t1.oid
)
union
(select t2.*
from tblSource2 t2, tblExtension3 t3
where t2.colA = 1 and t2.oid_parent = t3.oid
)
)

You'll notice that I'm trying to do this all in a single query... I'm
essentially merging and eliminating duplicates simultaneously.

--
TJ