Neo-fused hexaphyrin: A molecular puzzle containing an N-linked pentaphyrin
Document Type
Article
Publication Date
1-1-2014
Abstract
The first neo-confused hexaphyrin(1.1.1.1.1.0) was synthesized by oxidative ring closure of a hexapyrrane bearing two terminal ``confused'' pyrroles. The new compound displays a folded conformation with a short interpyrrolic C center dot center dot center dot N distance of 3.102 angstrom, and thus it readily underwent ring fusion to afford a neo-fused hexaphyrin with an unprecedented 5,5,5,7-tetracyclic ring structure. Furthermore, coordination of Cu-II triggered a ring opening/contracting reaction to afford a Cu-II complex of an N-linked pentaphyrin derivative. The roles of reactive N-C bonds in the porphyrinoid macrocycles were demonstrated.
Keywords
Fused-ring systems, hexaphyrins, macrocycles, pentaphyrins, porphyrinoids
Publication Title
Angewandte Chemie International Edition
Volume
53
Issue
51
Publisher
John Wiley & Sons
Publisher Location
BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY