Application of the double Pauson-Khand cyclization to the synthesis of bis(cyclopentadienes): preparation of phenyl-bridged bis(tetrahydroindenyl)titanium and zirconium dichlorides

Article abstract of DOI:10.1016/0022-328X(95)00107-2

We have demonstrated a very efficient (5 steps, 28percent yield from 1-octen-7-yne and 1,2-diiodobenzene) and novel synthesis of 1,2-bis(9-bicyclo<4.3.0>-non-1,6-dienyl)benzene.We utilized for the first time in a bis(cyclopentadiene) synthesis the double