“…Furthermore (3)[4] and (1)[llb] prove to be efficient stereodirecting groups in aldol reactions. Effenberger et al[12] could carry out an intermolecular electrophilic addition that proceeds with practically complete diastereoselectivity. In the reaction of the amide Eu(fod),, toluene, 80°C 98 % endo: em = 0: Use of the auxiliary (2c) in Diels-Alder reactions.…”