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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1586691Generated: November 2, 2026

Dichloromethane → HCID 19759044, compound

https://huagongshe.com/reaction/1586691

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDichloromethaneHCID 6344—
ReactantSodium HydroxideHCID 14798—
ReactantN-methylhydroxylamine hydrochlorideHCID 77906—
Reactant2,4-Dibromobutyryl chlorideHCID 4413143—
SolventWaterHCID 962—
ProductHCID 19759044HCID 19759044—

Reaction Conditions

Temperature5 °C

Reaction Steps

A mixture of 65 mL of dichloromethane and 2.6 g (33 mmol) of 50% aqueous sodium hydroxide in 8 mL of water was treated with 2.5 g (30 mmol) of N-methylhydroxylamine hydrochloride. After cooling to 5° C., 8.5 g (32 mmol) of 2,4-dibromobutyryl chloride* was added dropwise, with the temperature maintained at 5° to 8° C. An additional 2.6 g of 50% aqueous sodium hydroxide was added, and the mixture was stirred for 2 hours at 5° C. A final 2.6 g of 50% aqueous sodium hydroxide was added, and the mixture was stirred at room temperature for 18 hours. The organic layer was separated, and the aqueous layer was extracted with dichloromethane. The combined organic layers were dried (anhydrous magnesium sulfate) and evaporated.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05215986
Source datasetuspto-grants-1993_06
ORD IDord-21fb7b96d0d545bbb0dbe7d8dfc5d6a1
Source noteuspto-grants-1993_06