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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1453953Generated: October 27, 2026

tert-Butyl 4-[1-(2,4-dimethoxybenzyl)-2-oxo-1,4-dihydropyrido[3,2-d]pyrimidin-3(2H)-yl]piperidine-1-carboxylate → 3-Piperidin-4-yl-3,4-dihydropyrido[3,2-d]pyrimidin-2(1H)-one

https://huagongshe.com/reaction/1453953

Reaction equation

Participants

RoleNameHCIDCharge
Reactanttert-Butyl 4-[1-(2,4-dimethoxybenzyl)-2-oxo-1,4-dihydropyrido[3,2-d]pyrimidin-3(2H)-yl]piperidine-1-carboxylateHCID 22293253—
SolventTrifluoroacetic acidHCID 6422—
Product3-Piperidin-4-yl-3,4-dihydropyrido[3,2-d]pyrimidin-2(1H)-oneHCID 2229330498.4%

Reaction Steps

tert-butyl 4-[1-(2,4-dimethoxybenzyl)-2-oxo-1,4-dihydropyrido[3,2-d]pyrimidin-3(2H)-yl]piperidine-1-carboxylate (0.10 g, 0.21 mmol) was dissolved in trifluoroacetic acid (5 mL) and stirred overnight. The reaction concentrated to afford the bisTFA salt of the title compound (0.048 g). MS 233.2 (M+1).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07476665B2
Source datasetuspto-grants-2009_01
ORD IDord-e937c813b12947a0b9242cedf16dbe45
Source noteuspto-grants-2009_01