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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 506594Generated: October 25, 2026

Triethylamine → 5-Nitro-3-(phenylethynyl)pyridin-2-amine

https://huagongshe.com/reaction/506594

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
ReactantPhenylacetyleneHCID 10821—
Reactant2-Amino-3-bromo-5-nitropyridineHCID 2734412—
CatalystCopper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)HCID 24350—
SolventTetrahydrofuranHCID 8028—
Product5-Nitro-3-(phenylethynyl)pyridin-2-amineHCID 59322901—

Reaction Steps

1.83 g 2-amino-3-bromo-5-nitropyridine 0.29 g PdCl2(PPh3)2 and 79 mg CuI were mixed in 36 ml dry THF and 3.45 ml triethylamine and 1.12 g phenylacetylene were added. Stirring was continued at room temperature for 12 hrs, then the solvent was removed and the residue purified by flash chromatography on silica in ethyl acetate/heptane eluent.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07786113B2
Source datasetuspto-grants-2010_08
ORD IDord-6fd41fed5c264610b95333fa2def0622
Source noteuspto-grants-2010_08