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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1352540Generated: November 1, 2026

Benzyl Bromide → HCID 21913792, compound

https://huagongshe.com/reaction/1352540

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzyl BromideHCID 7498—
ReactantNinhydrinHCID 10236—
ReactantSodium HydroxideHCID 14798—
Reactanttert-butyl N-(2-hydroxyethyl)carbamateHCID 2733206—
CatalystBenzyltrimethylammonium chlorideHCID 5963—
SolventEthyl acetate hexaneHCID 21226206—
ProductHCID 21913792HCID 2191379290.1%

Reaction Steps

To a mechanically stirred mixture of tert-butyl 2-(hydroxy)ethylcarbamate (32.2 g, 200.4 mmol) and sodium hydroxide (300 mL of 50%) was added benzyltrimethylammonium chloride (3.79 g, 20.4 mmol) and benzyl bromide (23.8 mL, 200.4 mmol). After stirring at room temperature for 12 hours TLC monitoring, using 1/1 hexane/ethyl acetate and ninhydrin stain, indicated complete reaction. The resulting clear solution was diluted with ice water (1 L), and the organic layer was separated. The aqueous layer was washed with chloroform (4×). The organic layers were combined and washed with water (2×) and brine (2×), dried with sodium sulfate, and concentrated under reduced pressure to provide 45.4 g of clear liquid. NMR analysis confirmed the product, which was used in the next step.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07220758B2
Source datasetuspto-grants-2007_05
ORD IDord-33a2e6a5c1474870b89ba4f325f56a66
Source noteuspto-grants-2007_05