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380237

Tebbe reagent solution

0.5 M in toluene

Synonym(s):

Bis(cyclopentadienyl)-μ-chloro­(dimethylaluminum)-μ-methylenetitanium

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About This Item

Empirical Formula (Hill Notation):
C13H18AlClTi
CAS Number:
67719-69-1
Molecular Weight:
284.58
NACRES:
NA.22
PubChem Substance ID:
24863730
UNSPSC Code:
12352101
MDL number:
MFCD00151575
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form

liquid

Quality Segment

100

reaction suitability

reaction type: C-C Bond Formation

concentration

0.5 M in toluene

density

0.927 g/mL at 25 °C

SMILES string

[CH]1[CH][CH][CH][CH]1.[CH]2[CH][CH][CH][CH]2.C[Al](C)C[Ti]Cl

InChI

1S/2C5H5.2CH3.CH2.Al.ClH.Ti/c2*1-2-4-5-3-1;;;;;;/h2*1-5H;2*1H3;1H2;;1H;/q;;;;;;;+1/p-1

InChI key

QEJAQNUJXFLWSP-UHFFFAOYSA-M

General description

Tebbe reagent is a Lewis acid stabilized organometallic compound, which is used to transform carbonyl groups into β-substituted methylenes. It also reacts with a wide range of carbonyl compounds, including esters, amides, and lactones to yield corresponding olefins.

Application

Tebbe reagent can be used:     
  • For the conversion of carbonyl groups of chlorophyll derivatives into the corresponding exo-methylene (or vinylidene) groups.
  • In the synthesis of β-C-glycosides from 3-OH glycol esters.
  • As a versatile methylenation reagent for the conversion of ketones and aldehydes to olefins. It offers facile reaction with hindered ketones and allows the conversion of esters to vinyl ethers.
  • To olefinate aldehydes.
  • To methylenate a chiral polyhydroxyketone with high diasteroselctivity.

Packaging

The 25 mL Sure/Seal™ bottle is recommended as a single-use bottle. Repeated punctures will likely result in decreased performance of product.

Legal Information

Sure/Seal is a trademark of Sigma-Aldrich Co. LLC

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Danger

Hazard Classifications

Aquatic Chronic 3 - Asp. Tox. 1 - Eye Dam. 1 - Flam. Liq. 2 - Repr. 2 - Skin Corr. 1B - STOT RE 2 - STOT SE 3

target_organs

Central nervous system, Respiratory system

Storage Class

3 - Flammable liquids

wgk

WGK 3

flash_point_f

39.2 °F - closed cup

flash_point_c

4 °C - closed cup

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

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