π-Facial diastereoselectivity in the electrophilic and electrophilic–nucleophilic additions to dimethyl (1R,2R,3S,4S)-bicyclo[2.2.2]oct-5-ene-2,3-dicarboxylate
π-Facial diastereoselectivity in the electrophilic and electrophilic–nucleophilic additions to dimethyl (1R,2R,3S,4S)-bicyclo[2.2.2]oct-5-ene-2,3-dicarboxylate