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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 237836Generated: November 1, 2026

4-Hydroxy-but-2-ynoic acid ethyl ester → (S)-2-(4-Cyclohexyl-phenoxymethyl)-5-hydroxymethyl-2,3-dihydro-oxazolo[3,2-a]pyrimidin-7-one

https://huagongshe.com/reaction/237836

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-Hydroxy-but-2-ynoic acid ethyl esterHCID 10855468—
Reactant(S)-5-(4-cyclohexyl-phenoxymethyl)-4,5-dihydro-oxazol-2-ylamineHCID 66875140—
SolventDimethyl SulfoxideHCID 679—
Product(S)-2-(4-Cyclohexyl-phenoxymethyl)-5-hydroxymethyl-2,3-dihydro-oxazolo[3,2-a]pyrimidin-7-oneHCID 59252549—

Reaction Steps

The title compound was prepared from (S)-5-(4-cyclohexyl-phenoxymethyl)-4,5-dihydro-oxazol-2-ylamine and 4-hydroxy-but-2-ynoic acid ethyl ester (G. Cai et al., Tetrahedron, 2006, 5697-5708) employing the procedure described in Example 99. [α]D25 +5.80 (c 0.5, DMSO)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08642603B2
Source datasetuspto-grants-2014_02
ORD IDord-68c0081322e04658aaf0c8ea12f850bb
Source noteuspto-grants-2014_02