1 Laboratoire d'Ingénierie Moléculaire pour la Séparation et les Applications des Gaz, LIMSAG UMR 5633, Université de Bourgogne, 9 Av. Alain Savary BP47870, 21078 Dijon, France.
Reductive amination of various aldehydes with cyclen represents a very convenient method for the synthesis of a wide range of 1,7-difunctionalized cyclens, as well as new cryptands.