作者:Ekkehard Lindner、Hartwig Kühbauch
DOI:10.1016/0022-328x(91)83110-p
日期:1991.2
(η2-C2H4)Ru(CO)4 (1) reacts with the activated alkynes ZCCZ (2a–c, e, g) [Z = CO2R; R = Me (a), Et (b), nPr (c), nBu (e), Cy (g)] to give the tricyclic compounds 3a–c, e, g containing two tricarbonylruthenacyclopentadiene rings. The tendency of formation and the yield of 3a–c, e, g is dependent on the steric demand of the subsitituents R. 3a–c, e, g are precatalysts for the cyclotrimerization of 2a–c
(η 2 -C 2 H ^ 4)的Ru(CO)4(1)反应与活化的炔烃ZCCZ(2A-C,E,G)[ Ž = CO 2 R等 R = Me(a),Et(b),n Pr(c),n Bu(e),Cy(g)],得到含有两个三羰基钌烷基环戊二烯环的三环化合物3a-c,e,g。3a–c,e,g的形成趋势和产量取决于取代基R. 3a–c,e,g的空间需求是将2a–c,e,g环化为苯衍生物4a–c,e,g的前催化剂。以相同的方式3A cyclotrimerizes图2B,C,E-H(2H:HCCCO 2 CH 3),以图4B,C,E-H。