Microwave‐Assisted Synthesis and Transformations of Cationic CpRu(II)(naphthalene) and CpRu(II)(naphthoquinone) Complexes

Article Article scientifique Article Microwave‐Assisted Synthesis and Transformations of Cationic CpRu(II)(naphthalene) and CpRu(II)(naphthoquinone) Complexes eng 2019 author Bocekova Eva 714419 author Epik Bugra author Chou Jingyu 632425 author Akiyama Katsuhiro 602998 author Fukui Nobuaki 741633 author Guenee Laure 115015 author Kundig Ernst Peter 26401 e1900076 10.1002/hlca.201900076 0018-019X https://onlinelibrary.wiley.com/doi/abs/10.1002/hlca.201900076 Details of the direct synthesis of cationic Ru(II)(η5‐Cp)(η6‐arene) complexes from ruthenocene using microwave heating are reported. Developed for the important catalyst precursor [Ru(II)(η5‐Cp)(η6‐1‐4,4a,8a‐naphthalene)][PF6] reaction time could be shortened from three days to 15 min. The method was extended to [Ru(II)(η6‐benzene)(η5‐Cp)][PF6], [Ru(II)(η5‐Cp)(η6‐toluene)][PF6], [Ru(II)(η5‐Cp)(η6‐mesitylene)][PF6], [Ru(II)(η5‐Cp)(η6‐hexamethylbenzene)][PF6], [Ru(II)(η5Cp)(η6‐indane)][PF6], [Ru(II)(η5‐Cp)(η6‐2,6‐dimethylnaphthalene)][PF6], and [Ru(II)(η5‐Cp)(η6‐pyrene)][PF6]. 1‐methylnaphthalene and 2,3‐dimethylnaphthalene afforded mixtures of regioisomeric complexes. [Ru(Cp)(CH3CN)3][PF6], derived from the naphthalene precursor provided access to the cationic RuCp complexes of naphthoquinone, tetralindione, 1,4‐dihydroxynaphthalene, and 1,4‐dimethoxynaphthalene. Reduction of the tetralindione complex afforded selectively the endo,endo diol derivative. X‐Ray structures of five complexes are reported. Ruthenium Microwave chemistry Naphthoquinones Tetralindiones Naphthalene Dewey 540 36 Département de chimie organique 141 40 Département de chimie minérale, analytique et appliquée 145 false Helvetica Chimica Acta 102 5 249206e8-5934-413a-a1aa-d4bef364e810 Article (Published version) Restricted Bocekova-Gajdo--kova_et_al-2019-Helvetica_Chimica_Acta.pdf 1782586 application/pdf restrictedAccess Faculté des sciences / Section de chimie et biochimie / Département de chimie organique Faculté des sciences / Section de chimie et biochimie / Département de chimie minérale, analytique et appliquée

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Microwave‐Assisted Synthesis and Transformations of Cationic CpRu(II)(naphthalene) and CpRu(II)(naphthoquinone) Complexes	Helvetica Chimica Acta			2019	581	1

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Bocekova, Eva