Lithium bis(trimethylsilyl)amide
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4039-32-1C[Si](C)(C)N[Si](C)(C)C.[Li]QQIRAVWVGBTHMJ-UHFFFAOYSA-Nstructure in first source
4039-32-1Wet Solid
White powder; [Alfa Aesar MSDS]
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Danger
H228 (43.9%): Flammable solid [Danger Flammable solids]
P210, P240, P241, P260, P261, P264, P264+P265, P270, P271, P273, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P362+P364, P363, P370+P378, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 198 reports by companies from 9 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Silanamine, 1,1,1-trimethyl-N-(trimethylsilyl)-, lithium salt (1:1) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Silanamine, 1,1,1-trimethyl-N-(trimethylsilyl)-, lithium salt (1:1) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Status: Active Update: 19-10-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/13861
1,1,1,3,3,3-Hexamethyldisilazane lithium salt: Does not have an individual approval but may be used under an appropriate group standard
Pharmaceutical and Medicine Manufacturing
Silanamine, 1,1,1-trimethyl-N-(trimethylsilyl)-, lithium salt (1:1): ACTIVE
VerwendenLithium bis(trimethylsilyl)amide is used as nonnucleophilic base to generate kinetic ketone and ester enolates. It is considerably more selective than LDA and undesired reductions (e.g., of nonenolizable ketones observed in the case of LDA) can be avoided by using LHMDS.
synthetischeIt is conveniently prepared by the reaction of hexamethyldisilazane with n-butyllithium in hexane. For most uses the hexane is then evaporated and replaced with THF.
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