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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1523737Generated: November 2, 2026

Oxalic Acid → 5-Chloro-7-{5-[1-(tetrahydro pyran-4-yl) piperidin-4-yl]-[1,3,4]oxadiazol-2-yl}-2,3-dihydro benzofuran-4-ylamine oxalate salt

https://huagongshe.com/reaction/1523737

Reaction equation

Participants

RoleNameHCIDCharge
ReactantOxalic AcidHCID 971—
Reactant5-Chloro-7-{5-[1-(tetrahydro pyran-4-yl) piperidin-4-yl]-[1,3,4]oxadiazol-2-yl}-2,3-dihydro benzofuran-4-yl amineHCID 71534781—
SolventEthanolHCID 702—
SolventIsopropanolHCID 3776—
Product5-Chloro-7-{5-[1-(tetrahydro pyran-4-yl) piperidin-4-yl]-[1,3,4]oxadiazol-2-yl}-2,3-dihydro benzofuran-4-ylamine oxalate saltHCID 7153478090.9%

Reaction Steps

To a stirred solution of 5-chloro-7-{5-[1-(tetrahydro pyran-4-yl) piperidin-4-yl]-[1,3,4]oxadiazol-2-yl}-2,3-dihydro benzofuran-4-ylamine (20.4 mg, 0.05 mmol) in ethanol (2 mL), oxalic acid (6.0 mg, 0.05 mmol) was added. After stirring at room temperature for 1 hour the reaction was further diluted with 2-propanol and refluxed for 2 hour; The volatiles were removed under reduced pressure and the crude product obtained was triturated with ether, dried under vacuum to obtain 5-chloro-7-{5-[1-(tetrahydro pyran-4-yl) piperidin-4-yl]-[1,3,4]oxadiazol-2-yl}-2,3-dihydro benzofuran-4-ylamine oxalate salt (22.5 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09079894B2
Source datasetuspto-grants-2015_07
ORD IDord-01a40d0ffa0e42b084f94fd63c36b44f
Source noteuspto-grants-2015_07