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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 58539Generated: October 29, 2026

Ethanol → Ethyl 5-(hydroxymethyl)-4,5-dihydro-1,2-oxazole-3-carboxylate

https://huagongshe.com/reaction/58539

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
ReactantDabcoHCID 9237—
ReactantEthyl nitroacetateHCID 69379—
ProductEthyl 5-(hydroxymethyl)-4,5-dihydro-1,2-oxazole-3-carboxylateHCID 2364340093%

Reaction Conditions

Temperature80 °C

Reaction Steps

To a mixture of allylic alcohol (0.650 mL; 9.35 mmol) and ethyl 2-nitroacetate (2.65 mL; 23.37 mmol) in ethanol (12 mL) in an Ace pressure tube was added 1,4-diazobicyclo[2.2.2]octane (DABCO, 0.189 g; 1.64 mmol). The tube was heated at 80° C. for 48 h. The mixture was evaporated. The flash chromatography on silica gel (eluent: 0 to 6% of methanol in dichloromethane) of the residue provided 1.51 g (93%) of ethyl 5-(hydroxymethyl)-4,5-dihydroisoxazole-3-carboxylate as an oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09434722B2
Source datasetuspto-grants-2016_09
ORD IDord-f4173b6f80c14c3ea34fbd1332d9baaa
Source noteuspto-grants-2016_09