Facile route to ferrocifen, 1-[4-(2-dimethylaminoethoxy)]-1-(phenyl-2-ferrocenyl-but-1-ene), first organometallic analogue of tamoxifen, by the McMurry reaction

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Abstract

As part of the search for tamoxifen substitutes that could be useful in the treatment of breast cancer, the use of organometallic complexes has been investigated. For this purpose a synthesis has been developed for ferrocifen, the prototype of this new series of complexes. Low valent titanium-mediated (TiCl4/Zn) cross-coupling of 4-MeO-C6H4COPh with ferrocenyl ethyl ketone affords the corresponding but-l-ene in high yield (66%), from which ferrocifen, 3, is rapidly prepared in an overall yield of 41%.

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