Y. Tobe et al., SYNTHESIS OF 7-CHLOROBICYCLO[5.2.2]UNDECA-1(9),10-DIENES AND 7-HYDROXYBICYCLO[5.2.2]UNDECA-1(9),10-DIENES, Synthesis, (5), 1993, pp. 460-462
7-Chlorobicyclo[5.2.2]undeca-1(9),10-diene (2a) and the 7-hydroxy deri
vative 2b were prepared by oxidative decarboxylation of tricyclo[5.2.2
.0(1,7)]undec-10-ene-8-carboxylic acids 6a and 6b followed by acid-cat
alyzed isomerization.