1. Contribution from the Laboratory of Organic Chemistry, Wageningen University and Research Center, Dreijenplein 8, 6703 HB Wageningen, The Netherlands, Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands, and A&F Innovations, Wageningen University and Research Center, Bornsesteeg 59, 6708 PD Wageningen, The Netherlands