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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 335735Generated: October 30, 2026

(4s)-2'-(3,6-Dihydro-2h-Pyran-4-Yl)-4'-Fluoro-7'-(2-Fluoropyridin-3-Yl)spiro[1,3-Oxazole-4,9'-Xanthen]-2-Amine → (S)-4'-fluoro-7'-(2-fluoropyridin-3-yl)-2'-(tetrahydro-2H-pyran-4-yl)-5H-spiro[oxazole-4,9'-xanthen]-2-amine

https://huagongshe.com/reaction/335735

Reaction equation

Participants

RoleNameHCIDCharge
Reactant(4s)-2'-(3,6-Dihydro-2h-Pyran-4-Yl)-4'-Fluoro-7'-(2-Fluoropyridin-3-Yl)spiro[1,3-Oxazole-4,9'-Xanthen]-2-AmineHCID 45254900—
CatalystPalladiumHCID 23938—
SolventMethanolHCID 887—
Product(S)-4'-fluoro-7'-(2-fluoropyridin-3-yl)-2'-(tetrahydro-2H-pyran-4-yl)-5H-spiro[oxazole-4,9'-xanthen]-2-amineHCID 45255105—

Reaction Steps

(S)-2′-(3,6-dihydro-2H-pyran-4-yl)-4′-fluoro-7′-(2-fluoropyridin-3-yl)-5H-spiro[oxazole-4,9′-xanthen]-2-amine (30 mg, 0.067 mmol) and palladium on carbon (7.14 mg, 0.067 mmol) were combined in 10 ml of MeOH and stirred under an atmosphere of hydrogen overnight. The solution was filtered and concentrated to afford (S)-4′-fluoro-7′-(2-fluoropyridin-3-yl)-2′-(tetrahydro-2H-pyran-4-yl)-5H-spiro[oxazole-4,9′-xanthen]-2-amine as a white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08883782B2
Source datasetuspto-grants-2014_11
ORD IDord-0c7d4c8bad1b4f4f9edc8b8248a1496f
Source noteuspto-grants-2014_11