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18297-63-7 - N,N'-Bis(trimethylsilyl)urea, 98+% - BSU - L01301 - Alfa Aesar

L01301 N,N'-Bis(trimethylsilyl)urea, 98+%

CAS Number
18297-63-7
Synonyms
BSU

Size Price ($) Quantity Availability
50g 20.60
250g 76.12
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N,N'-Bis(trimethylsilyl)urea, 98+%

MDL
MFCD00008260
EINECS
242-177-9

Chemical Properties

Formula
C7H20N2OSi2
Formula Weight
204.42
Melting point
ca 230° dec.
Sensitivity
Moisture Sensitive
Solubility
Reacts with water.

Applications

N,N'-Bis(trimethylsilyl)urea is used as a reagent for the silylation of alcohols and carboxylic acids.

Notes

Moisture Sensitive

Literature References

A. Blencowe.; L. Davidson.; W. Hayes. Synthesis and characterization of hyperbranched polyesters incorporating the AB2 monomer 3,5-bis(3-hydroxylprop-1-ynyl)benzoic acid. European Polymer Journal. 2003, 39, (10), 1955-1963.

Andrei K. Yudi.; Jay P. Chiang.; Hans Adolfsson.; Christophe Coperet. Olefin Epoxidation with Bis(trimethylsilyl) Peroxide Catalyzed by Inorganic Oxorhenium Derivatives. Controlled Release of Hydrogen Peroxide. J. Org. Chem. 2001, 66, (13), 4713-4718.

Useful reagent for the silylation of alcohols and carboxylic acids: Synthesis, 807 (1981). See Appendix 4. Generally no catalyst is required and the urea formed as by-product can be removed by filtration. For O-silylation catalyzed by TBAF (0.02 equiv.) under mild conditions, see: Tetrahedron Lett., 35, 8409 (1994). Review: Synthesis, 357 (1998).

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

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

Precautionary Statements: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Beilstein
1937452
Harmonized Tariff Code
2931.90
TSCA
Yes

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