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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1476645Generated: October 27, 2026

Hydrochloric Acid → 6-(2,3-difluorophenyl)-1-[(2-ethyl-2H-tetrazol-5-yl)methyl]-3-(piperidin-4-yl)thieno[3,2-d]pyrimidine-2,4(1H,3H)-dione hydrochloride

https://huagongshe.com/reaction/1476645

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactanttert-butyl 4-[6-(2,3-difluorophenyl)-1-[(2-ethyl-2H-tetrazol-5-yl)methyl]-2,4-dioxo-1,4-dihydrothieno[3,2-d]pyrimidin-3(2H)-yl]piperidine-1-carboxylateHCID 67257703—
Solvent1,4-DioxaneHCID 31275—
Product6-(2,3-difluorophenyl)-1-[(2-ethyl-2H-tetrazol-5-yl)methyl]-3-(piperidin-4-yl)thieno[3,2-d]pyrimidine-2,4(1H,3H)-dione hydrochlorideHCID 67258158—

Reaction Steps

Tert-butyl 4-[6-(2,3-difluorophenyl)-1-[(2-ethyl-2H-tetrazol-5-yl)methyl]-2,4-dioxo-1,4-dihydrothieno[3,2-d]pyrimidin-3(2H)-yl]piperidine-1-carboxylate (44 mg, compound B61) and a solution of hydrogen chloride in 1,4-dioxane (0.2 ml+0.9 ml, 4.0 M) in 1,4 dioxane (2 ml) are reacted according to the procedure described in example B79 to afford the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09018175B2
Source datasetuspto-grants-2015_04
ORD IDord-6c59fa0e60ca40a583e9757fc82f536e
Source noteuspto-grants-2015_04