Abbott Laboratories (ABT) on Monday unveiled the leadership team for the proprietary pharmaceutical division that it plans to separate into an independent company. Abbott had previously disclosed that Richard A. Gonzalez, the 57-year-old leader of Abbott’s pharmaceutical business, will serve as chairman and chief executive of the new company, AbbVie, which Abbott plans to establish via a tax-free distribution of AbbVie shares to Abbott shareholders by the end of this year. Abbott Labs disclosed in a filing Monday with the U.S. Securities and Exchange Commission that it is tapping other in-house executives to go with Mr. Gonzalez to lead AbbVie.