SAMP auxiliary-derived monosubstituted diferrocenyl ketones have been subjected to ortho-metalation/functionalization reactions to prepare chiral disubstituted bisferrocenes. The reactions proceeded in low to moderate yields (20-54 %) and excellent stereoselectivities (97 -Ն 99 % ee, Ն 96 % de), however low regio-selectivities were obtained in several cases. Monosubstituted bisferrocenes, containing only a planar-chiral element, were excellent substrates in the same ortho-metalation/functionalization reaction affording disub-
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