You should be able to cut a hole in the wall to vent the pipe. There should be some space right about your basement cement wall where you can vent it. Will probably have to do some drywall repair after you are done, but if you're going to be there a while it will be worth it.
Hell, just call up a local HVAC guy and tell him you need a vent for your new AC unit. It probably wouldn't cost much to have it done professionally.
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