Efficient Synthesis of Tris(acetonitrile)‐(η⁵‐cyclopentadienyl)‐ ruthenium(II) Hexafluorophosphate via Ruthenocene

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

“…Thus, naphthalene substitution in 2 by arenes, phosphines, acetonitrile, amines takes place under mild conditions and can be accelerated by visible light. [20,22,[25][26][27][28][29][30][31][32] The microwave-mediated substitution of Cp for an arene ligand was extended to the preparation of a number of CpRu(arene) + complexes (Scheme 3).…”

“…A new route of access developed in this laboratory in 2004 solved both the above shortcomings. It described an efficient synthesis of the air-stable mixed sandwich complex [Ru(II)Cp(naphthalene)][PF 6 ] (2) [22,23] from which the more labile acetonitrile complex 1 is readily obtained under mild conditions. The only problem with this ruthenocene method is the use of a large excess of naphthalene (10 equiv.)…”

The AZARYPHOS Family of Ligands for Ambifunctional Catalysis: Syntheses and Use in Ruthenium‐Catalyzed anti‐Markovnikov Hydration of Terminal Alkynes

“…Here we generalize our study of structure-activity relationships of AZARYPHOS ligands. The hydration catalysts were generated in situ by ligand exchange from [RuCp(h 6 -naphthalene)]A C H T U N G T R E N N U N G [PF 6 ] (62) [57] with the AZARYPHOS ligands, followed by evaporation to dryness (Scheme 10a). [23] The catalytic hydration of 1-octyne to octanal was chosen as the standard reaction for kinetic comparisons (Scheme 10b).…”

Enantioselective and Regioselective Ruthenium‐Catalyzed Decarboxylative Etherification of Allyl Aryl Carbonates

“…[15] Allyl carbonate 4 a ( Table 1, R, R' = H) was treated with catalytic amounts of 1 b (10 mol %) in THF at room temperature (Table 1). [21] Importantly, without ligand, little reactivity was observed (34 % conversion after 24 h); the presence of 2,2'-bipyridine (bpy) [5] accelerating the reaction and improving the regioselectivity. In presence of L2 and L3 (10 mol %), [15] the reaction proceeded but modest results were obtained (conversion up to 24 % after 2 h, up to 73 % ee).…”