Reductive coupling reaction induced by remote-site oxidation in titanocene bis(metallocenylacetylide), where metallocenyl = ferrocenyl or ruthenocenyl: a novel route to Cn (n = 4, 6, and 8) wire with the metallocenyl groups at both terminals
作者:Yukiko Hayashi、Masahisa Osawa、Yasuo Wakatsuki
DOI:10.1016/s0022-328x(97)00149-6
日期:1997.9
The titanocene bis(acetylide) complexes (eta(5)-C5H4R)(2)Ti[(C=C)(m)-Mc][(C=C)(n)-Mc'] (R = H, SiMe3; m, n = 1 or 2; Mc, Mc' = ferrocenyl or ruthenocenyl) have been prepared and found to be easily oxidized with 2 equiv. amount of AgPF6 liberating a neutral product, Mc-(C=C)(m)(C=C)(n)-Mc'. Electrochemical studies indicate that the reaction is induced by initial oxidation of Mc and Mc' followed by unprecedented reductive coupling of the two alkynyl carbons bound to titanocene. (C) 1997 Elsevier Science S.A.