Reduction des halogenures de titane(IV) par les metaux: une nouvelle methode de synthese de Cp2 Ti(CO)2 et de CpTi(C7H7

Synthesis and Reactivity of Boron‐, Silicon‐, and Tin‐Bridged ansa‐Cyclopentadienyl–Cycloheptatrienyl Titanium Complexes (Troticenophanes)

“…The synthesis of troticene (1) [28] Although the reported yields are satisfying, a time-consuming multistep reaction sequence is required. Therefore, we decided to reinvestigate the synthesis of During the purification of 1 by sublimation, colorless crystals formed, which could be separated mechanically and were identified as [MgA C H T U N G T R E N N U N G (h H NMR spectroscopy.…”

Organometallic oxides and sulfides: preparation of [(η-C5H5)Ti]5(μ3-S)6, [(η-C5H5)Ti]5(μ3-S)5(μ3-S2)(μ4-O), and(η-C5H5)2Ti(SH)(μ-O)Ti(η-C5H5)(μ-S)2- Ti(η-C5H5)2 by reductive aggregation of (η-C5H5)2Ti(SH)2 with zinc powder or

“…Solvents were predried by standard drying agents, stored over BunLi, and distilled under vacuum. Literature methods were used to prepare (q-CjH,)2Ti(C0)2 (27) and (q-C5H5)zTi(SH)2 (10); H,S was purchased from Canadian Liquid Air, Montreal, and used as received. Zinc dust (<325 mesh, Aldrich) was evacuated prior to use and transferred to the reaction flask under argon.…”

Novel Nine-Membered Titanaheterocycles – Structure, ab initio Calculations, and Preparative Use towards the Selective Synthesis of Substituted Cyclopentanols

“…Solvents were dried and distilled under arTwo conformations are possible for 5, which differ in the gon prior to use according to standard procedures. The starting orientation of the organic fragment with respect to the complex 3 [18] as well as most of the unsaturated ketones were preCp 2 TiO 2 moiety. The geometric data of the experimental pared as published [4b [24] by Wittig reaction, 4cϪe [25] , 4f [26] , 4h [1-conformer are in good agreement with the X-ray structure.…”

“…[6] [11] [12] Structurally characterized nine-membered (e.g. 4a) readily react under mild, non-basic conditions with titanacycles are known as well, but most of them lack car-dicarbonyltitanocenes 3 [18] to furnish the corresponding bon in their metallacycle, as for instance TiS 8 systems. [4] [13] nine-membered bis-unsaturated metallacycles 5 right away We reported [14] on the synthesis of "carbon-rich" bis(η 5 -without five-membered species of type 1 being detectable cyclopentadienyl)titanadioxacyclononadienes 5 by a novel intermediates [14] .…”