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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2235310Generated: October 28, 2026

Lithium Hexamethyldisilazide → HCID 59299368, compound

https://huagongshe.com/reaction/2235310

Reaction equation

Participants

RoleNameHCIDCharge
ReactantLithium HexamethyldisilazideHCID 2733832—
Reactant2-Chloro-6-fluorobenzyl bromideHCID 2773625—
ReactantHCID 14178413HCID 14178413—
SolventTetrahydrofuranHCID 8028—
ProductHCID 59299368HCID 5929936859%

Reaction Conditions

Temperature-78 °C

Reaction Steps

Dissolve 1-cyclohexyl-piperidin-2-one (0.2 g, 1.10 mmol) in dry THF (11 mL) cool to −78° C. and add lithium bis(trimethylsilyl)amide (1.66 mL of 1.0 M solution in THF, 1.66 mmol). After 15 min add 1-bromomethyl-2-chloro-6-fluorobenzene (0.49 g, 2.21 mmol), and allow the mixture to warm to room temperature over 15 h. Wash the mixture with brine, dry the organic layer over sodium sulfate and evaporate. Purify the residue by chromatography on silica gel (eluting 0% to 100% ethyl acetate in hexane) to give the desired product (0.21 g, 59%). MS (ES+) m/z=324 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07713979B2
Source datasetuspto-grants-2010_05
ORD IDord-85d18fd803324c979b7b5bdb07d2b1b4
Source noteuspto-grants-2010_05