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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 553838Generated: November 1, 2026

Ammonium Chloride → HCID 67461146, compound

https://huagongshe.com/reaction/553838

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmonium ChlorideHCID 25517—
ReactantIodide IonHCID 30165—
ReactantTrimethylsilylacetyleneHCID 66111—
Reactant4-{(S)-4-tert-butoxycarbonyl-2-[(6-chloro-2-phenyl-pyrimidine-4-carbonyl)-amino]-butyryl}-piperazine-1-carboxylic acid ethyl esterHCID 86622404—
CatalystDichlorobis(triphenylphosphine)palladiumHCID 6102075—
SolventDimethylformamideHCID 6228—
SolventTriethylamineHCID 8471—
ProductHCID 67461146HCID 67461146—

Reaction Steps

NEt3 (0.249 ml) and trimethylsilylacetylene (0.254 ml) in DMF (4.5 ml) were syringed into a flask containing cupper iodide (8.9 mg), bis-(triphenylphosphine) palladium(II)-dichloride (22.5 mg) and 4-{(S)-4-tert-butoxycarbonyl-2-[(6-chloro-2-phenyl-pyrimidine-4-carbonyl)-amino]-butyryl}-piperazine-1-carboxylic acid ethyl ester (500 mg) under argon. The mixture was allowed to stir at RT overnight. A saturated NH4Cl solution was added and the resulting mixture was extracted with EA. The org. phases were dried (Na2SO4) and evaporated off. Column chromatography (EA/Hept 1/2 to 1/1.5) afforded 339 mg of the desired compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08048881B2
Source datasetuspto-grants-2011_11
ORD IDord-fda0809aef4a4e639e97f6c4e9b37f2b
Source noteuspto-grants-2011_11