The co-head of the bankruptcy practice at Weil, Gotshal & Manges has left to launch a new practice group for Dewey & LeBoeuf.

Martin J. Bienenstock, one of the nation’s most well-known bankruptcy lawyers and the partner who led Weil Gotshal’s representation of Enron Corp. in its 2001 Chapter 11 filing, will head the business solutions and governance group for Dewey & LeBoeuf and also serve on the firm’s executive committee.