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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 397536Generated: October 29, 2026

Hydrochloric Acid → HCID 23000576, compound

https://huagongshe.com/reaction/397536

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantLithium HydroxideHCID 3939—
ReactantHCID 23000617HCID 23000617—
SolventMethanolHCID 887—
ProductHCID 23000576HCID 23000576—

Reaction Steps

To a solution of 0.159 g (0.469 mmol) ethyl {2-[(2,2-difluoro-2-pyridin-2-ylethyl)amino]-3-fluoropyridin-4-yl}acetate 29-2 in 1 mL MeOH was added 469 uL (0.469 mmol, 1M aqueous solution) LiOH. The reaction was stirred at room temperature for 23 h. To the reaction was added 38.7 uL (0.469 mmol, 12M aqueous solution) HCl. The mixture was stirred for 10 min, concentrated in vacuo, and placed under vacuum alongside P2O5 to yield {2-[(2,2-difluoro-2-pyridin-2-ylethyl)amino]-3-fluoropyridin-4-yl}acetic acid 29-3. 1H NMR (CD3OD, 400 MHz) δ8.606 (d, 1H, J=4.77 Hz, ArH); 7.894 (t, 1H, J=7.83 Hz, ArH); 7.692 (d, 1H, J=7.69 Hz, ArH); 7.609 (d, 1H, J=5.22 Hz, ArH); 7.458 (t, 1H, J=6.05 Hz, ArH); 6.499 (t, 1H, J=4.99 Hz, ArH); 4.324 (t, 2H, J=13.92 Hz, CH2); 3.572 (s, 2H, CH2); MS (Electrospray): m/z 312.0 (M+H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06610701B2
Source datasetuspto-grants-2003_08
ORD IDord-198f21b679e444d284080381fd08e405
Source noteuspto-grants-2003_08