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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 742962Generated: October 25, 2026

Dichloromethane → 6-Benzyl-3-methyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dionehydrochloride

https://huagongshe.com/reaction/742962

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDichloromethaneHCID 6344—
Reactant6-benzyl-3-methyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dioneHCID 10016028—
Product6-Benzyl-3-methyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dionehydrochlorideHCID 19423353—

Reaction Steps

14.3 g of 6-benzyl-3-methyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione were dissolved in 300 ml of dichloromethane, and 6-benzyl-3-methyl-5,6,7,8-tetrahydro-1H-pyrido[4,3-d]pyrimidine-2,4-dione hydrochloride was precipitated with a solution of hydrochloric acid in ether, while cooling with ice. The product was purified by recrystallization from isopropanol.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05556854
Source datasetuspto-grants-1996_09
ORD IDord-b878da169a814773b29343362eec12fe
Source noteuspto-grants-1996_09