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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1476571Generated: October 29, 2026

Potassium Carbonate → tert-butyl 4-{1-[(3-ethylisoxazol-5-yl)methyl]-2,4-dioxo-6-phenyl-1,4-dihydrothieno[3,2-d]pyrimidin-3(2H)-yl}piperidine-1-carboxylate

https://huagongshe.com/reaction/1476571

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant5-(Chloromethyl)-3-ethyl-1,2-oxazoleHCID 12364600—
Reactanttert-butyl 4-(2,4-dioxo-6-phenyl-1,4-dihydrothieno[3,2-d]pyrimidin-3(2H)-yl)piperidine-1-carboxylateHCID 67257815—
SolventDimethylformamideHCID 6228—
Producttert-butyl 4-{1-[(3-ethylisoxazol-5-yl)methyl]-2,4-dioxo-6-phenyl-1,4-dihydrothieno[3,2-d]pyrimidin-3(2H)-yl}piperidine-1-carboxylateHCID 67257471—

Reaction Steps

According to GP1 tert-butyl 4-(2,4-dioxo-6-phenyl-1,4-dihydrothieno[3,2-d]pyrimidin-3(2H)-yl)piperidine-1-carboxylate (750 mg; compound B50) is reacted with 5-(chloromethyl)-3-ethylisoxazole (255 mg; compound D3) in the presence of potassium carbonate (242 mg) in DMF (10 ml). Using WU1 the title compound is obtained as a solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09018175B2
Source datasetuspto-grants-2015_04
ORD IDord-603d86e4df6c4c6288b31484ed5aaf5e
Source noteuspto-grants-2015_04