There are private letter rulings (LTR 200807005 for example) that allow for replacement property to be held by disregarded entities. So the fact that title to the replacement property is in the name of a disregarded LLC is not necessarily a problem. If the LLC was not owned by the S Corporation at the time of the exchange, that may be a problem, but not necessarily. In the letter ruling the taxpayer wanted to acquire as the replacement 100% of the partners' interest in a partnership that owned the property, and that was deemed a good exchange. I would caution against dissolving the corporation without careful research. There will be a deemed sale of the property at fair market value upon liquidation and gain or loss recognized by the corporation and taxed to the shareholder, and it will do nothing to cure a failed exchange, if that is the case.