No abstract

Cycloaddition reactions O 0070 Intramolecular Cycloaddition of Fluorinated 1,3,4-Oxadiazoles to Dienes. -Products of double cycloaddition (7-oxabicycloheptane type compounds) along with those of intramolecular cycloaddition (oxatricyclic and oxatetracyclic compounds) are observed in the reactions of title compounds (I) with conjugated and unconjugated dienes. -(VASIL'EV*, N. V.; ROMANOV, D. V.; BAZHENOV, A. A.; LYSSENKO, K. A.; ZATONSKY, G. V.; J. Fluorine Chem. 128 (2007) 7, 740-747; Moscow State Reg. Univ., Moscow 107005, Russia; Eng.) -H. Toeppel 45-033