Michael Carucci of ERA Boston Real Estate Group Inc. has brokered the sale of 585 Boylston St., unit #3 for $2.5 million. The 4,600 s/f office condominium is located in Copley Sq. and occupies the third floor. Carucci represented the seller, Copley Boylston Associates, and the buyer, Trinity View, LLC, in the transaction.