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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 742966Generated: October 29, 2026

Hydrochloric Acid → 3-benzyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione hydrochloride

https://huagongshe.com/reaction/742966

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant3-benzyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dioneHCID 19423335—
SolventWaterHCID 962—
Product3-benzyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione hydrochlorideHCID 19423334—

Reaction Steps

9.4 g of 3-benzyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]-pyrimidine-2,4-dione were suspended in 250 ml of water, the equivalent amount of 1 N HCl was added and the solution formed was filtered and concentrated under vacuum. 9.9 g of 3-benzyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione hydrochloride were obtained from the residue after purification by recrystallization from isopropanol.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05556854
Source datasetuspto-grants-1996_09
ORD IDord-53f30d7e9842416aaa5eed1bc740ce8f
Source noteuspto-grants-1996_09