a
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, USA
b
Department of Chemical Engineering, MIT, 77 Massachusetts, Avenue, Cambridge, USA
E-mail: kfjensen@mit.edu.
;
Fax: 617-258-8224
;
Tel: 617-253-4589
c
Laboratorium für Organische Chemie, ETH Hönggerberg, HCI F315, Wolfgang-Pauli-Str. 10, Zurich, Switzerland
E-mail: seeberger@org.chem.ethz.ch
;
Fax: 41 1 633 12 35
;
Tel: 41 1 633 21 03