反应详情

To a mixture of 0.1 mol 4-pentyl-1-(2,3-difluorphenyl)-cyclohex-1-en and 500 ml toluene is added 0.22 mol 2,3-dichlor-5,6-dicyano-p-benzoquinone (DDQ) and refluxed for 2 h. After usual work-up 2',3'-difluorbiphenyl, bp: 125° C. at 0.5 mm Hg is obtained.

1. temperaturerefluxed for 2 h