Oxidative cleavage reactions of compounds of the type CpRuLL'R (L,L' = CO, PPh3; R = Me, PhCH2)

Chemical Redox Agents for Organometallic Chemistry

“…Hydrated salts may be employed if the reactants and products are likely to be inert to water, but anhydrous CuCl 2 is simply made by refluxing CuCl 2 ‚2H 2 O with thionyl chloride. 87,88 Copper(II) halides (hydrated and anhydrous), nitrate, acetate, etc., induce metal-alkyl bond cleavage in [FeR(CO) 2 Cp] in CH 2 Cl 2 89 and in ruthenium analogues in MeCN; 90 the stoichiometry of such reactions, which involve initial one-electron transfer, is given by eq 11. The identity of the oxidant is unclear when CuCl 2 reacts with [M 2 (CO) 10 ] (M ) Mn or Re) in MeCN.…”

Stereoselective oxidative-addition reactions of dihalogens and copper(II) halides to square-planar organoplatinum(II) complexes containing hard N and C donor atoms. Molecular structures of [bc,de-bis(8-dimethylamino-1-naphthyl)]-af-diiodoplatinum(IV) and ab-dibromo[cf,de-bis(8-dimethylamino-1-naphthyl)]platinum(IV)

“…4 ORTEP drawing (40% probability level) and adopted numbering scheme for cis-[PtBr,(dman),] 5e PtC( 13)C(22)C(2 1)N(2) (anti twist conformation). Moreover, there is noticeable bending of the naphthyl skeletons: the angle between the two six-membered rings in the naphthyl ligand containing C(l) is 4.3(4)0, in the other naphthyl ligand containing C (13) this angle amounts to 4.5(4)". Similar deviations from planarity are also found in the molecular structure of [Pt(dman),] 3., ' The Pt-C(1) and Pt-C(13) bond lengths of 2.015(8) and 2.028 (7) The X-ray structure of [PtBr,(dman),] 5e shows a platinum(1v) centre which, like that in 5c, is six-co-ordinate.…”

Cyclization/Oxygenation Scheme for the Conversion of Polyenes into C3-Oxygenated Polycycles

“…18 While the divergence in reactivity from the Goldberg and Britovsek reactivity 7–8 may be the result of increased steric congestion 19 combined with 2° peroxy radicals being more prone to Russell breakdown, 17 trapping with O 2 and subsequent Russell breakdown mirrors Kochi’s oxidation of Pt dialkyl complexes with IrCl 6 2- 11c . In the absence of O 2 4 was the dominant product (entry 5, Table 1).…”

“…11 Though ferrocenium salts used to induce Pd oxidation 12 and Pd-Me bond homolysis 11a, b were unreactive (Cp 2 Fe + /Cp 2 Fe = 0.4 V vs SCE), 13 several Cu(II) salts proved effective. Particularly intriguing was Cu(OTf) 2 (Cu(OTf) 2 /Cu(OTf) = 0.8 V vs SCE), 14 one equivalent of which provided 2 and 3 in a combined yield of up to 80% (entries 2–4, Table 1).…”