Bis(cyclopentadienyl)dimethyltitanium manufacturers
|
| | Bis(cyclopentadienyl)dimethyltitanium Basic information |
| Product Name: | Bis(cyclopentadienyl)dimethyltitanium | | Synonyms: | PETATIS REAGENT;Bis(cyclopentadienyl)dimethyltitanium, 5 wt% in toluene;BIS(CYCLOPENTADIENYL)DIMETHYLTITANIUM;BIS-(CYCLOPENTADIENYL)-DIMETHYLTITANIUM(IV);DIMETHYLTITANOCENE;Bis(cyclopentadienyl)dimethyltitanium, 5 WT% solution in toluene;Bis(cyclopentadienyl)dimethyltitanium5 wt% in tolueneAcroSeal§3;Dimethyltitanocene (5% in Toluene) | | CAS: | 1271-66-5 | | MF: | C12H16Ti | | MW: | 208.12 | | EINECS: | | | Product Categories: | | | Mol File: | 1271-66-5.mol |  |
| | Bis(cyclopentadienyl)dimethyltitanium Chemical Properties |
| Melting point | >90 °C dec | | refractive index | 1.49 | | storage temp. | Freezer (-20°C) | | solubility | sol most aprotic organic solvents, e.g. Et2O, THF, CH2Cl2, toluene, hexanes | | form | clear liquid | | color | Orange to Red | | Water Solubility | SLOW hydrolysis |
| Provider | Language |
|
ACROS
| English |
| | Bis(cyclopentadienyl)dimethyltitanium Usage And Synthesis |
| Chemical Properties | Orange to dark red solution | | Uses |
Used as reagent of low basicity and acidity, useful for the methylenation of carbonyl compounds;
methylenates highly enolizable ketones, esters and lactones, including aldonolactones and acid-labile substrates;
homologs of the reagent perform carbonyl alkylidenations;
reacts with alkynes and nitriles and can initiate the ring-opening metathesis polymerization of strained cyclic alkenes;
Bis(cyclopentadienyl)dimethyltitanium is a useful precursor for Ziegler-Natta polymerization catalysts, a cocatalyst for alkene metathesis and a catalyst for alkene hydrogenation and the dehydrogenative coupling of silanes.
| | Preparation | Bis(cyclopentadienyl)dimethyltitanium is prepared by a solution of Methyllithium (2.1 equiv) in Et2O is added dropwise to a suspension of Dichlorobis(cyclopentadienyl)titanium in Et2O (3-5 mL mmol-1) cooled in an ice bath. After 1 h the reaction mixture is quenched with ice water, the ether layer is separated, dried over MgSO4, filtered and evaporated. The resulting bright orange crystals of the reagent, obtained in 95% yield, are dissolved in THF or toluene and stored in the dark, in the refrigerator or freezer. | | storage | Sensitive to oxygen and light, but can be briefly exposed to air and water. In the solid state the reagent is not stable for more than a few hours at rt, but it can be stored for months in the dark as a THF or toluene solution. Although it is stable in solution at rt, the reagent is best stored in a refrigerator. |
| | Bis(cyclopentadienyl)dimethyltitanium Preparation Products And Raw materials |
|