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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 371467Generated: October 31, 2026

1-Benzylpiperazine → HCID 13384070, compound

https://huagongshe.com/reaction/371467

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-BenzylpiperazineHCID 75994—
ReactantPotassium FluorideHCID 522689—
Reactant5-Bromo-6-propylpyrimidine-2,4(1H,3H)-dioneHCID 13384066—
SolventEthanolHCID 702—
ProductHCID 13384070HCID 1338407058.6%

Reaction Conditions

Temperature140 °C

Reaction Steps

A mixture of 53.3 g (0.229 mole) of 5-bromo-6-propyl-2,4(1H,3H)pyrimidinedione and 23.7 g (0.252 mole) of anhydrous potassium fluoride in 176 ml (1.0 mole) of 1-benzylpiperazine was heated under reflux at 140° C. for 14 hours. The reaction mixture was cooled to 80° C. and 100 ml of ethanol was added. The mixture was poured into one liter of ice water. The solid was collected and washed with one liter of water. Recrystallization from ethanol and drying in vacuo at 59° C. for 16 hours gave 44.1 g of the product as an off-white solid; mp 233°-235° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04532240
Source datasetuspto-grants-1985_07
ORD IDord-93e95a1eae524b12b278022f2569e32a
Source noteuspto-grants-1985_07