Electronic control of stereoselectivity. 14. Long-range control by norbornane frameworks of cyclopentadienide reactivity. Stereoselective capture of electrophiles by tricyclo[5.2.1.02,6]deca-3,8-dienyl anions
Electronic control of stereoselectivity. 15. Stereoselectivity of Diels-Alder cycloadditions to norbornyl- and norbornenyl-fused spirocyclic cyclopentadiene systems