Dialkylation of acetophenones and acetophenone ethylene ketals with 1,8-bis(trimethylsilyl)-2,6-octadiene (BISTRO). Semi-empirical SCF studies of α-methoxy-α-methylbenzyl cations

Article abstract of DOI:10.1016/S0040-4020(97)10416-1

Titanium tetrachloride mediated dialkylation of acetophenones or acetophenone ethylene ketals by 1,8-bis(trimethylsilyl)-2,6-octadiene (BISTRO) leads to a mixture of dl and meso 1-alkyl-1-phenyl-2,5-divinylcyclopentane. Better yields are observed with p-b