8‐Oxabicyclo[5.1.0]octa‐2,4‐dien, reduktive und säurekatalysierte Ringöffnung

Abstract 8‐Oxabicyclo[5.1.0]octa‐2,4‐diene ( 1 ) is obtained from cycloheptatriene with commercial 40% peracetic acid. Upon catalytic and LiAlH 4 reduction the allylic CO‐bond in 1 is cleaved. Acid catalised hydrolysis leads to a mixture of all six possible isomeric cycloheptadienediols. With BF 3 in the absence of water isomerization to 3,5‐cycloptadienone is observed.