Cookies disclaimer

I agree Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our website without changing the browser settings you grant us permission to store that information on your device.

A11456 Bis(cyclopentadienyl)titanium dichloride, 97%

CAS Number
1271-19-8
Synonyms
Dichlorobis(cyclopentadienyl)titanium
Titanocene dichloride

Stock No. Size Price ($) Quantity Availability
A11456-09 10g 39.00
A11456-18 50g 122.00
A11456-30 250g 480.00
Add to Cart Bulk/Specialty Print Quote View Item

Bis(cyclopentadienyl)titanium dichloride, 97%

MDL
MFCD00003723
EINECS
215-035-9

Chemical Properties

Formula
C10H10Cl2Ti
Formula Weight
249.00
Melting point
ca 285° dec.
Density
1.60
Storage & Sensitivity
Moisture Sensitive. Air Sensitive. Store under Argon. Ambient temperatures.
Solubility
Slightly soluble in water

Applications

One-pot synthesis of α-methylene-γ-butyrolactones from benzaldehydes and bromomethylacrylates. Bis-(cyclopentadienyl)-titanium dichloride alkylaluminum complexls acts as catalysts for the polymerization of ethylene. Polyethylene prepared with these catalysts. Complexes of aluminum chloride and methylaluminum dichloride with bis-(cyclopentadienyl)-titanium dichloride as catalysts for the polymerization of ethylene.

Notes

Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Store away from strong oxidizing agents, moisture, water, air.

Literature References

Wendell P. Long,; David S. Breslow. Polymerization of Ethylene with Bis-(cyclopentadienyl)-titanium Dichloride and Diethylaluminum Chloride. J. Am. Chem. Soc. 1960, 82 (8), 1953-1957.

Wendell P. Long. Complexes of Aluminum Chloride and Methylaluminum Dichloride with Bis-(cyclopentadienyl)-titanium Dichloride as Catalysts for the Polymerization of Ethylene . J. Am. Chem. Soc. 1959, 81 (20),5312-5316.

In combination with trimethyaluminum, generates an ylide (Tebbe reagent): J. Am. Chem. Soc., 100, 3611 (1978), which transfers a methylene group not only to aldehydes and ketones (cf Wittig reaction) but also to the carbonyl groups of esters and lactones: J. Am. Chem. Soc., 102, 3270 (1980):

A similar reagent can be prepared by reaction with the Simmons-Smith adduct (see Diiodomethane, A15457) and used for the methylenation of ketones in excellent yields: Tetrahedron Lett., 24, 2043 (1983).

Reacts with Grignard reagents with a ß-hydrogen atom (e.g. isobutyl or isopropyl) to form, in a catalytic cycle, a titanium hydride species, which reduces aldehydes, ketones and esters to alcohols: Tetrahedron Lett., 21, 2171, 2175 (1980). The same combination effects regioselective cis-hydromagnesation of alkynes to give alkenyl Grignard reagents: Tetrahedron Lett., 22, 85 (1981); J. Chem. Soc., Chem. Commun., 718 (1981). For application in a highly stereospecific synthesis of vinylsilanes in excellent yields, see: Tetrahedron Lett., 24, 1041 (1983):

For further examples of the hydroxymagnesation of alkynes, see: Org. Synth. Coll., 8, 507 (1993). Similarly π-allyl complexes with 1,3-dienes can be generated, which react regio-and stereo-selectively with aldehydes to give homoallylic alcohols: J. Chem. Soc., Chem. Commun., 621 (1984):

For use, in combination with Mg metal, in formation of titanocycle intermediates, see: J. Org. Chem., 63, 9285 (1998); for reaction scheme, see Triphosgene, A14932.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P332+P313-P337+P313-P362-P501c

Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Take off contaminated clothing and wash before reuse. Dispose of contents/ container to an approved waste disposal plant

Other References

Merck
14,9482
Harmonized Tariff Code
2931.90
TSCA
Yes
RTECS
XR2050000

Recommended

Recently Viewed

Chemicals

Life Science

Metals & Materials

Catalysts

Analytical & Labware