Synthesis and Solvolysis of a Novel Cyclic Dienynyl Trifluoromethanesulphonate ... Michael Hanack" and Robert Rieth lnstitut fur Organische Chemie der Universitat Tubingen, Auf der Morgenstelle 18, D-7400 Tubingen, West Germany ... Cyclodeca-I ,3-dien-5-yn-l -yl trifluoromethanesulphonate (2) has been synthesized and solvolysed in different solvent systems to give cyclized aromatic products exclusively, which are formed mainly via an aryl cation (5) in term edi ate.
