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Pure Appl. Chem., 2006, Vol. 78, No. 4, pp. 699-706

From superphanes to beltenes

Rolf Gleiter, Björn Hellbach, Silke Gath and Rolf J. Schaller

Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany

Abstract: This short review describes paths to superphanes with metal-stabilized cyclobutadiene and cyclopentadienone rings in a one-pot and stepwise fashion. The stepwise synthesis also led to a new class of belt-like systems with large rings composed of CpCo-stabilized cyclobutadiene rings connected with propane chains. Finally, our research yielded the first beltenes composed of alternating four- and eight-membered conjugated rings.