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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2255506Generated: October 30, 2026

Allyl bromide → HCID 19737997, compound

https://huagongshe.com/reaction/2255506

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAllyl bromideHCID 7841—
ReactantSodium hydrideHCID 24758—
Reactant4-Hydroxy-3,4-dihydro-1lambda~6~-thieno[3,2-e][1,2]thiazine-1,1(2H)-dioneHCID 22901942—
SolventDimethylformamideHCID 6228—
ProductHCID 19737997HCID 1973799788%

Reaction Conditions

Temperature-10 °C

Reaction Steps

The product from Step C of Example 2 (4.0 g, 19.5 mmol) was dissolved in anhydrous DMF (70 mL) cooled to -10° C. and sodium hydride (21.5 mmol) was added. After stirring for five minutes allyl bromide (2.53 mL, 29.25 mmol) was added and this mixture stirred for 2 h at 0° C. The reaction mixture was poured onto ice water (100 mL) and this solution was extracted with ethyl acetate. The combined extracts were washed with brine, dried (MgSO4) and evaporated to give a crude product which was purified by column chromatography (silica, methylene chloride:methanol, 20:1) to provide the desired product (4.2 g, 88%) as a syrup.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05240923
Source datasetuspto-grants-1993_08
ORD IDord-787f612a7ee14d269243e2299d5df1d9
Source noteuspto-grants-1993_08