Tris(dimethylamino)sulfonium difluorotrimethylsilicate , technicalgrade , 59218-87-0

Synonym(s):
TASF;TAS-F;Tris(dimethylamino)sulfur trimethylsilyl difluoride

CAS NO.：59218-87-0

Empirical Formula: C9H27F2N3SSi

Molecular Weight: 275.48

MDL number: MFCD00012170

PRODUCT Properties

• storage temp.: 2-8°C
• solubility: R = Me, sol MeCN, pyridine, benzonitrile; partially sol THF. R = Et, sol THF, MeCN. Both react slowly with MeCN.
• form: powder
• color: White to off-white
• Sensitive: Moisture Sensitive
• Hydrolytic Sensitivity: 8: reacts rapidly with moisture, water, protic solvents
• BRN: 3577020

Description and Uses

Tris(dimethylamino)sulfonium Difluorotrimethylsilicate is used in anhydrous fluoride ion source; synthesis of C–F compounds by nucleophilic displacement of sulfonates;promoter for electrophilic reactions of silyl enolates of ketones and esters; source of sulfonium cation capable of stabilizing or imparting high nucleophilic reactivity to other anions; activator of vinylsilanes in Pd-catalyzed cross-coupling reactions; also used for generation8 and reactions of α- and β-halo carbanions; hydrosilylation and cyanomethylation of ketones.

Safety

• Symbol(GHS): GHS05
• Signal word: Danger
• Hazard statements: H314
• Precautionary statements: P260-P280-P301+P330+P331-P303+P361+P353-P305+P351+P338
• Hazard Codes: C
• Risk Statements: 14-34-37
• Safety Statements: 26-36/37/39-45
• RIDADR: UN 3261 8/PG 2
• WGK Germany: 3
• F: 3-10-21
• Hazard Note: Corrosive/Moisture Sensitive
• TSCA: No
• HazardClass: 8
• PackingGroup: II
• HS Code: 2931900090