@article {1311205, title = {The Stereochemistry of the Conjugate Addition of Derivatives of endo-2-Norbornylcopper(I) to Mesityl Oxide}, journal = {J. Org. Chem.}, volume = {37}, year = {1972}, note = {45}, pages = {3718-3725}, author = {Whitesides, G. M. and Kendall, P.E.} }