Selective Reactions of Functionalized Ruthenium(II) σ-Alkynyl Complexes with Dicobalt Octacarbonyl and Tetracobalt Dodecacarbonyl: Synthesis of Cyclopentenone Derivatives <i>via</i> Intermolecular Pauson−Khand Reactions
作者:Victorio Cadierno、M. Pilar Gamasa、José Gimeno、Josep M. Moretó、Susagna Ricart、Anna Roig、Elies Molins
DOI:10.1021/om970645g
日期:1998.2.1
Treatment of [RuC⋮CCPh2(C⋮CH)}(η5-C9H7)(PPh3)2] (1) with [Co2(CO)8] leads to the formation of the adduct [RuC⋮CCPh2(μ2-η2-C⋮CH)Co2(CO)6}(η5-C9H7)(PPh3)2] (3) through the selective coordination of the Co2(CO)6 fragment at the terminal alkyne group on 1. Similarly, the enynyl complex [RuC⋮CCHCH(C⋮CPh)}(η5-C9H7)(PPh3)2] ((E,Z)-2), prepared via a Wittig reaction from [RuC⋮CCH2(PPh3)}(η5-C9H7)(PPh3)2][PF6]
的治疗的[Ru C⋮CCPh 2(C⋮CH)}(η 5 -C 9 ħ 7)(PPH 3)2 ](1)与[CO 2(CO)8 ]通向加合物的形成[茹C⋮CCPh 2(μ 2 -η 2 -C⋮CH)有限公司2(CO)6 }(η 5 -C 9 ħ 7)(PPH 3)2 ](3)通过Co的选择性协调2(CO)1末端炔基上的6个片段。类似地,enynyl复杂的[Ru C⋮CCH CH(C⋮CPH)}(η 5 -C 9 ħ 7)(PPH 3)2 ]((E,Z) - 2),制备通过从Wittig反应[茹C⋮CCH 2(PPH 3)}(η 5 -C 9 ħ 7)(PPH 3)2 ] [PF 6 ](5)和phenylpropargyl醛,也与发生反应[CO 2(CO)8 ]得到选择性地将所述加合物的[Ru C⋮CCH CH(μ 2 -η 2-C⋮CPH)有限公司2(CO)6 }(η 5 -C 9