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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 539014Generated: October 25, 2026

Ethyl Acetate → HCID 67034301, compound

https://huagongshe.com/reaction/539014

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl AcetateHCID 8857—
ReactantDiisopropylethylamineHCID 81531—
ReactantL-ValinolHCID 640993—
Reactant3-Bromo-5-chloropyrazolo(1,5-a)pyrimidineHCID 45480507—
SolventDimethylformamideHCID 6228—
ProductHCID 67034301HCID 6703430199%

Reaction Conditions

Temperature100 °C

Reaction Steps

To a solution of (S)-2-amino-3-methylbutan-1-ol (3.3 g, 32 mmol) in DMF was added 3-bromo-5-chloropyrazolo[1,5-a]pyrimidine (2.5 g, 11 mmol) and N-ethyl-N-isopropylpropan-2-amine (4.2 g, 32 mmol) and the reaction was heated to 100° C. for 4 hours. The reaction mixture was poured into EtOAc and washed with water and brine, dried over magnesium sulfate and concentrated in vacuo to yield (S)-2-(3-bromopyrazolo[1,5-a]pyrimidin-5-ylamino)-3-methylbutan-1-ol (3.2 g, 99%). LCMS (APCI+) m/z 299, 301 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08865726B2
Source datasetuspto-grants-2014_10
ORD IDord-87f9a51b3bde4849a87d0898f2594334
Source noteuspto-grants-2014_10