Transition Metal-Diene Complexes in Organic Synthesis, Part 20.1 Development of Highly Efficient 1-Aza-1,3-butadiene Catalysts for the Complexation of 1,3-Dienes by the Tricarbonyliron Fragment - Knölker, Hans-Joachim; Gonser, Peter; Jones, Peter G (Synlett, 1994)