摘要:
Ring-closing metathesis reactions of symmetrical and unsymmetrical cycloalkeno[c]fused 2,2'-bipyridines, substituted at the alpha and alpha' positions of the pyridine rings with sufficiently long alkenyl ethers, afforded 16-membered cyclophanes, possessing variously annulated 2,2'-bipyridine subunits. (c) 2005 Elsevier Ltd. All rights reserved.