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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1773796Generated: October 26, 2026

Diethyl Oxalate → rac-2-(1-Phenoxy-ethyl)-4,5,6,7-tetrahydro-pyrazolo[1,5-a]pyrazine

https://huagongshe.com/reaction/1773796

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiethyl OxalateHCID 7268—
Reactant3-Phenoxy-2-butanoneHCID 2764474—
ReactantHCID 57435086HCID 57435086—
Reactantethyl 1-{2-[(tert-butoxycarbonyl)amino]propyl}-3-(phenoxymethyl)-1H-pyrazole-5-carboxylateHCID 67958408—
ReactantHCID 67960066HCID 67960066—
ReactantRac-6-methyl-2-phenoxymethyl-4,5,6,7-tetrahydro-pyrazolo[1,5-a]pyrazineHCID 67960219—
ReactantHCID 178469067HCID 178469067—
Productrac-2-(1-Phenoxy-ethyl)-4,5,6,7-tetrahydro-pyrazolo[1,5-a]pyrazineHCID 67968152—

Reaction Steps

The compound was prepared from 3-phenoxy-butan-2-one and diethyl oxalate using the methods described in the preceding examples 9 (2,4-dioxo-5-phenoxy-pentanoic acid ethyl ester), 10 (5-phenoxymethyl-2H-pyrazole-3-carboxylic acid ethyl ester), 11 (rac-2-(2-tert-butoxycarbonylamino-propyl)-5-phenoxymethyl-2H-pyrazole-3-carboxylic acid ethyl ester), 12 (rac-6-methyl-2-phenoxymethyl-6,7-dihydro-5H-pyrazolo[1,5-a]pyrazin-4-one), and 13 (rac-6-methyl-2-phenoxymethyl-4,5,6,7-tetrahydro-pyrazolo[1,5-a]pyrazine).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09255103B2
Source datasetuspto-grants-2016_02
ORD IDord-8a014eecfc60427f8a544be4472d3137
Source noteuspto-grants-2016_02