Cycloaddition Reactions of 7-Benzylidene
β
Philip Clements; Georgeβ
E. Gream; Paulβ
K. Kirkbride; Simonβ
M. Pyke
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Article
π
2005
π
John Wiley and Sons
π
German
β 328 KB
## Abstract An (__E__)/(__Z)__ mixture (3β:β2) of 7βbenzylidenecyclooctaβ1,3,5βtriene (**5**) is obtained when 1βbenzylcyclooctaβ1,3,5,7βtetraene (**7**), prepared by an improved procedure, is treated with __t__βBuOK in THF. Alternatively, a __ca.__ 9β:β1 mixture (__E__)/(__Z__)β**5** can be prepar