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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 978047Generated: October 29, 2026

Hydrogen Bromide → HCID 54242836, compound

https://huagongshe.com/reaction/978047

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrogen BromideHCID 260—
ReactantDiethyl EtherHCID 3283—
ReactantMethyl 5-bromo-2,2-difluoropentanoateHCID 13769950—
SolventWaterHCID 962—
ProductHCID 54242836HCID 54242836—

Reaction Steps

HBr gas was introduced into 48% HBr in H2O (100 ml) with occasional cooling in an ice bath until the weight became 180 g. The HBr solution was then added to Part (5) compound (8.4 g, 36.3 mmole) at room temperature and the reaction was stirred for 5 hours at room temperature. The reaction was cooled to 0° C. and poured into Et2O (900 ml) in an ice bath. The products were extracted into the Et2O layer. The water layer was further extracted with Et2O (200 ml and 100 ml). The combined ether layers were washed with H2O (200 ml). The H2 wash was backwashed with Et2O (100 ml). The Et2O layers were combined and dried over MgSO4. Filtration and evaporation of solvent gave the title compound (7.8 g, quant.) as a colorless liquid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04663336
Source datasetuspto-grants-1987_05
ORD IDord-97a82d5d3a16439aa526414768d074a6
Source noteuspto-grants-1987_05