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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2387013Generated: November 1, 2026

Sodium Hydroxide → HCID 58764155, compound

https://huagongshe.com/reaction/2387013

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium HydroxideHCID 14798—
ReactantPhosphorus tribromideHCID 24614—
ReactantHCID 86223875HCID 86223875—
SolventDichloromethaneHCID 6344—
ProductHCID 58764155HCID 58764155—

Reaction Conditions

Temperature50 °C

Reaction Steps

Phosphorous tribromide (1.3 mL) was added to a solution of 2-bromo-6-ethyl-3-methoxy-pyridine 1-oxide (0.3 g, 1.3 mmol, from step 4 of example A(2)) dissolved in CH2Cl2 (10 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 (0.28 g, 99%). 1H NMR (400 MHz, CDCl3): δ 1.27 (t, J=7.6 Hz, 3 H), 2.76 (d, J=7.6 Hz, 2 H), 3.89 (s, 3 H), 7.06 (d, J=8.1 Hz, 1 H), 7.09 (d, J=8.1 Hz, 1 H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08268835B2
Source datasetuspto-grants-2012_09
ORD IDord-5bd15f848a16481c993094179242a8d3
Source noteuspto-grants-2012_09