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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 336005Generated: October 25, 2026

4,4-Difluoropiperidine hydrochloride → (S)-3-(4,4-difluoropiperidin-1-yl)-1-fluoro-7-(5-fluoropyridin-3-yl)-5'-H-spiro[chromeno[2,3-c]pyridine-5,4'-oxazol]-2'-amine

https://huagongshe.com/reaction/336005

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4,4-Difluoropiperidine hydrochlorideHCID 2758351—
Reactant(5-Fluoropyridin-3-yl)boronic acidHCID 44717403—
Reactant(S)-7-bromo-3-chloro-1-fluoro-5'H-spiro[chromeno[2,3-c]pyridine-5,4' oxazol]-2'-amineHCID 58466258—
Product(S)-3-(4,4-difluoropiperidin-1-yl)-1-fluoro-7-(5-fluoropyridin-3-yl)-5'-H-spiro[chromeno[2,3-c]pyridine-5,4'-oxazol]-2'-amineHCID 53464568—

Reaction Steps

The title compound was synthesized by steps analogous to those described in method CC4 above, but using (S)-7-bromo-3-chloro-1-fluoro-5′H-spiro[chromeno[2,3-c]pyridine-5,4′-oxazol]-2′-amine (prepared as described in Method BB33), 5-fluoropyridin-3-ylboronic acid and 4,4-difluoropiperidine hydrochloride.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08883782B2
Source datasetuspto-grants-2014_11
ORD IDord-7f0c6171adf14c4b90682fe640372ded
Source noteuspto-grants-2014_11