... The lactones 8 and 9 are formed. Download full text in PDF. Tetrahedron Letters,Vol.26,No.36, pp 4363366,1985 0040039/85 $3.00 + .00 Printed in Great Britain 985 Pergarnon Press Ltd. INTRAMOLEKULARE DIELSLDEREAKTION EEl ALLENCARBONSAURERYLESTERN * Gerhard Himbert und Dieter Fink Fachbereich Chemie der Universit Kaiserslautern, Postfach 3049, 0750 Kaiserslautern Abstract: By thermolysis aryl allenecarboxylates 6 and 7 ...