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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2047131Generated: November 1, 2026

Hydrochloric Acid → Hydrochloric Acid

https://huagongshe.com/reaction/2047131

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantTert-butyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-(1-ethoxyvinyl)-3-(6-phenylpyridin-3-yl)pyrazolo[1,5-a]pyrimidin-5-yl)piperidine-1-carboxylateHCID 66584806—
SolventWaterHCID 962—
Solvent1,4-DioxaneHCID 31275—
ProductHydrochloric AcidHCID 313—
Product1-(7-Amino-3-(6-phenylpyridin-3-yl)-5-(piperidin-4-yl)pyrazolo[1,5-a]pyrimidin-6-yl)ethanoneHCID 66737988—

Reaction Conditions

Temperature0 °C

Reaction Steps

To a solution of tert-butyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-(1-ethoxyvinyl)-3-(6-phenylpyridin-3-yl)pyrazolo[1,5-a]pyrimidin-5-yl)piperidine-1-carboxylate (11.5 g, 14.4 mmol) in dioxane (60 mL) was added 4M HCl in water (14.4 mL) at 0° C. After stirring for 30 min at 0° C., the reaction mixture was allowed to warm to rt in 1.5 hours. 4M HCl in dioxane (10 mL) was added. The reaction mixture was stirred at rt overnight. Solvent was removed in vacuo to get the desired product as an HCl salt (6.97 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08591943B2
Source datasetuspto-grants-2013_11
ORD IDord-26e297570f6c4d959d207da3dbdbdaa6
Source noteuspto-grants-2013_11