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Tebbe Reagent (ca. 0.5mol/L in Toluene)
(CAS RN:67719-69-1 Product Number:C1411)


Tebbe Reagent
Synonym μ-Chlorobis(η5-cyclopentadienyl)(dimethylaluminum)-μ-methylenetitanium (ca. 0.5mol/L in Toluene)
Synonym μ-Chloro-μ-methylene[bis(cyclopentadienyl)titanium]dimethylaluminum (ca. 0.5mol/L in Toluene)

General Information

Product Number C1411

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Purity/Analysis Method
Storage Temperature 0-10°C
M.F. / M.W. C13H18AlClTi=284.59
CAS RN 67719-69-1
Related CAS RN
MDL Number MFCD00151575
Packaging and Container 25mL-Vial (View image)
  • Product Details
  • Safety & Regulations


Concentration(Argentmetric titration) 22.0 to 27.0 w/w%

Data of Reference

flp 1°C(lit.)


Merck Index(14) 9091
F&F 15,79


Signal Word Danger
Hazard Statements
  • H225
  • :Highly flammable liquid and vapour.
  • H304
  • :May be fatal if swallowed and enters airways.
  • H312
  • :Harmful in contact with skin.
  • H314
  • :Causes severe skin burns and eye damage.
  • H335+H336
  • :May cause respiratory irritation. May cause drowsiness or dizziness.
  • H360FD
  • :May damage fertility. May damage the unborn child.
  • H370
  • :Causes damage to Central Nervous System.
  • H372
  • :Causes damage to Liver, Kidney, Central Nervous System through prolonged or repeated exposure.
Precautionary Statements
  • P260
  • :Do not breathe mist, vapours or spray.
  • P280
  • :Wear protective gloves, protective clothing, face protection.
  • P301+P330+P331+P310
  • :IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Immediately call a POISON CENTER or doctor.
  • P303+P361+P353+P310+P363
  • :IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower. Immediately call a POISON CENTER or doctor. Wash contaminated clothing before reuse.
  • P304+P340+P310
  • :IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER or doctor.
  • P305+P351+P338+P310
  • :IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor.

Transport Information

UN Number 2924
Class 3/8
Packing Group II
HS Number 2931399090


Ring-Closing Metathesis Using Tebbe Reagent


Methylenation Reagent

Typical Procedure: To ester (224 mg, 0.85 mmol) in dry THF (2.5 mL) at 0 ℃ is added Tebbe reagent in toluene (0.5 M, 1.7mL). The mixture is allowed to warm to room temperature and, after 30 min, Et2O (10 mL) is added, followed by the slow addition of aqueous NaOH (0.1 M) while stirring the mixture. After gas evolution cease, the mixture is dried (Na2SO4) and filtered through Celite. Evaporation and chromatography give enol ether(175 mg, 79%).


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