Synthesis, structures and reactions of some metallocene alcohols

1,1′-(1-Propene-1,3-diyl)-ferrocene: modified synthesis, crystal structure, and polymerisation behaviour

“…The most prominent feature of the structure, which should be relatively unaffected by the disorder is the ring tilt of 11.3°. This angle is somewhat larger than those observed for other [3](1,1 0 )ferrocenophanes with saturated bridges (8.8-10.9°) [32][33][34][35][36]; comparable dehydro [3](1,1 0 )ferrocenophanes, 1,1 0 -(1-ferrocenyl-1-propene-1,3-diyl)-ferrocene and 1,1 0 -(1,3-diferrocenyl-3-methyl-1-propene-1,3-diyl)-ferrocene, have ring tilts of 12.3°and 12.6°, respectively [39,37,38]. Ring tilts of 7.2°and 11.1°have been reported for two independent molecules of the unsaturated [4]ferrocenophane, 1,1 0 -(1-methoxybutadiene-1,4-diyl)-ferrocene [40]; values of 21.6°and 23°have been reported for CH 2 CH 2 and CH@CH bridged [2]ferrocenophanes, respectively [4,11].…”

Friedel–Crafts acylation of ferrocene with alkynoic acids

“…There are also a few reports on the use of alkenoic acids halides to obtain alkenoyl ferrocenes [11][12][13][14]. Generally, these reactions are more difficult to perform because of side reactions (e.g.…”

A Comparison of Phosphaferrocene and Phospharuthenocene Ligands in Rh+‐Catalysed Enamide Hydrogenation Reactions: Superior Performance of the Phospharuthenocene

“…Classical ruthenocenemethylium complexes are extremely robust [37,38] and, unlike the corresponding phosphaferrocene derivative, [36] compound 12 could be isolated, purified by crystallisation, and stored on the bench over a period of several months. Its stability permitted further new phospharuthenocene methylphosphane borane complexes 15, 16 and 17, to be synthesised conveniently through deprotonation of H 3 BPHtBu 2 or (AE )-H 3 BPHtBuMe at À78 8C and subsequent treatment of the product anions with a finely powdered suspension of 12 in diethyl ether, the protocol being designed to allow the coupling reaction to proceed rapidly whilst minimising a facile competing reduction of phospharuthenocenemethylium ion 12 into the 2-methyl phospharuthenocene derivative 23.…”