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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 859621Generated: October 29, 2026

Sodium Hydroxide → HCID 58764222, compound

https://huagongshe.com/reaction/859621

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium HydroxideHCID 14798—
ReactantPhosphorus tribromideHCID 24614—
ReactantHCID 67084376HCID 67084376—
SolventDichloromethaneHCID 6344—
ProductHCID 58764222HCID 58764222—

Reaction Conditions

Temperature50 °C

Reaction Steps

Phosphorous tribromide (5.5 mL) was added to a solution of 4-bromo-2-ethyl-5-methoxy-pyridine 1-oxide (1.25 g, 5.4 mmol) dissolved in CH2Cl2 (40 mL). The reaction mixture was heated to 50° C. for 1 hour. After cooling to room temperature the mixture was poured into ice and made basic with 15% NaOH and extracted with CH2Cl2. The organic extracts were dried over Na2SO4 and concentrated to a clear oil (1.13 g, 97%). 1H NMR (400 MHz, CDCl3): δ 1.28 (t, J=7.6 Hz, 3 H), 2.75 (q, J=7.6 Hz, 2 H), 3.97 (s, 3 H), 7.37 (s, 1 H), 8.13 (s, 1 H)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07151105B2
Source datasetuspto-grants-2006_12
ORD IDord-c8703d9c2d994d0a8736e733cb38448b
Source noteuspto-grants-2006_12