ol991381s_si_002.pdf (160.59 kB)
C2-Symmetric Planar Chiral Ferrocene Diamides by (−)-Sparteine-Mediated Directed ortho-Lithiation. Synthesis and Catalytic Activity
journal contribution
posted on 2000-02-11, 00:00 authored by Radoslaw S. Laufer, Ulrich Veith, Nicholas J. Taylor, Victor SnieckusA variety of highly enantioenriched singly and doubly (4) functionalized derivatives of 1,1‘-N,N,N‘,N‘-tetraisopropylferrocenedicarboxamide 1
have been synthesized by (−)-sparteine (2)-mediated directed ortho-metalation and Pd-catalyzed cross coupling reactions. The synthetic
applications of these chiral ligands in asymmetric alkylation of benzaldehyde and Pd(0)-catalyzed allylic substitution have been demonstrated.