Fig. 4: Computational analysis.

a Characteristics of the internal stereo-directing process. b Influence of the alkene geometry. c Different behaviour of the aliphatic substrates. (M06-2X/6-31 + G(d,p)/PCM(CH₂Cl₂), free energies in kcal · mol⁻¹) (Npth 1,8-naphthaloyl).