VI1 of brominelc and the elements of hydrogen peroxide4 to norbornylene. We are reporting here structural evidence that indicates an entirely different course of reaction is involved with addition to the double bond in I11 than was observed in the apparently similar cases of dicyclopentadiene and norbomylene. Proof of the Structure of the Bromination Product from 111.-Consider the two possibilities consistent with the observed dipole niomentIb of this ...