Chapter 11 debtor’s liquidating plan created litigation trust for purposes including the pursuit of fraudulent conveyances and preferences. Litigation trustee filed complaint against two defendants, alleging various state law claims as well as claims for fraudulent conveyances, and the defendants moved to dismiss for lack of subject matter jurisdiction. Held, bankruptcy court had subject matter jurisdiction because the plan was a liquidating plan where recovery of proceeds would benefit creditors, because the claims were partially federal in nature, and because the claims arose prepetition.