Steric effects in the dimerization of 2,5-dialkyl-3,4-diphenylcyclopentadienones
Abstract
Some novel methyl- and ethyl-substituted dimers of 2,4-diphenylcyclopentadienones have been detected. Their enthalpies- of dimerization have been determined and compared with values calculated by molecular mechanics. The steric demands of this dimerization have thus been clarified.