A distinctive organocatalytic approach to complex macromolecular architectures

(Chemical Equation Presented) Branch manager: A one-step approach to branched copolymers is described. Primary amines are found to function as bifunctional initiators for ring-opening polymerization in the presence of 1 to promote the polymerization of two chains, thereby enabling the facile introduction of branch points in block copolymers. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.