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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 237864Generated: October 30, 2026

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

https://huagongshe.com/reaction/237864

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-Ethoxy-but-2-ynoic acid methyl esterHCID 64535168—
Reactant(S)-5-(4-cyclohexyl-phenoxymethyl)-4,5-dihydro-oxazol-2-ylamineHCID 66875140—
SolventChloroformHCID 6212—
Product(S)-2-(4-Cyclohexyl-phenoxymethyl)-5-ethoxymethyl-2,3-dihydro-oxazolo[3,2-a]pyrimidin-7-oneHCID 59252492—

Reaction Steps

The title compound was prepared from (S)-5-(4-cyclohexyl-phenoxymethyl)-4,5-dihydro-oxazol-2-ylamine and 4-ethoxy-but-2-ynoic acid methyl ester employing the procedure described in Example 94. [α]D25 −9.80 (c 0.5, CHCl3).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08642603B2
Source datasetuspto-grants-2014_02
ORD IDord-b573336d1a924fdbb53c3555949847cf
Source noteuspto-grants-2014_02