TITANOCENE BIS(TRIFLUOROMETHANESULFONATE) Chemical Properties

solubility 

sol CH2Cl2, MeNO2; insol benzene, hexane.

form 

powder to crystal

color 

Orange to Amber to Dark red

CAS DataBase Reference

76262-87-8

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

3

F 

10-23

HS Code 

2931.90.6000

MSDS

• Language:English Provider:SigmaAldrich

TITANOCENE BIS(TRIFLUOROMETHANESULFONATE) Usage And Synthesis

Uses

Catalyst for:

• Transesterification
• Stereoselective carbonyl-ene cyclization reactions
• Sakurai reactions
• Mukaiyama cross-aldol reactions

Application

TITANOCENE BIS(TRIFLUOROMETHANESULFONATE) is used as a catalyst for Diels-Alder reaction, Mukaiyama crossed-aldol reaction, and Sakurai reaction.

Preparation

TITANOCENE BIS(TRIFLUOROMETHANESULFONATE) is prepared by treatment of a 0.06 M THF solution of Dichlorobis(cyclopentadienyl)titanium with 5.5 equiv of a 0.19 M THF solution of Silver(I) Trifluoromethanesulfonate. After stirring for 15 min the reaction mixture is filtered, the red filtrate is layered with hexane, and the resulting red crystals are collected. Recrystallization from CH2Cl2/pentane or THF/hexane affords Cp2Ti(OSO2CF3)2 (25-30%) as red needles. 

storage

TITANOCENE BIS(TRIFLUOROMETHANESULFONATE) [Cp2Ti(OSO2CF3)2] and Cp2Zr(OSO2CF3)2 can be handled for short periods of time in air, but are best handled and stored in a glove box. Both can be prepared in situ. The pentamethylcyclopentadienyl analog Cp*2Ti(OH2)2²⁺ is air and water stable. Titanium(IV) is reputed to be of low toxicity.

TITANOCENE BIS(TRIFLUOROMETHANESULFONATE)(76262-87-8)Related Product Information

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