BY MARYE ANNE FOX
Department of Chemistry
University of Texas, Austin
Austin, Tex.
" Organolithiums exhibit a wide range of structures, in which interconversions are so fast as to obviate methods. This paper describes the structure of a chiral monomeric tridentately coordinated complex that is conformationally locked into one rotamer such that bond exchange is slow relative to the NMR time scale.
G. Fraenkel, W.R. Winchester, “Chiral lithium: conformation and dynamic behavior of monomeric neopentyllithium N,N,N’,N’,N”-Pentamethyldiethylenetriamine complex,” Journal of the American Chemical Society, 110, 8720-1, 21 December 1988.
A new paper provides a summary of practical methods for preparing chiral molecules. Efficient routes for asymmetric synthesis involving both organic and organometallic reagents are discussed.
H.B. Kagan, “Asymmetric catalysis in organic synthesis with industrial perspectives,” Bulletin de La Societé Chimique de France, 5, 846-53, September/October 1988.
" A rationale, from two viewpoints, both based on molecular mechanics force field calculations, is ...
