Cary, N.C.—R.H. Donnelley Corp., a Yellow Pages and online commercial local search company, said Thursday that it has signed a definitive agreement to acquire Business.com, a business search engine and pay-per-click advertising network, for $345 million in cash. The deal includes online properties Business.com, Work.com and the Business.com Advertising Network. Business.com has distribution partnerships with BusinessWeek.com, Forbes.com, WSJ.com and other leading business properties. The New York Times and Dow Jones & Co. had reportedly been in pursuit of Business.com. Upon completion of the deal, expected in the third quarter, Business.com founder and CEO Jake Winebaum will become president of Donnelley’s interactive unit.