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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2050394Generated: October 27, 2026

Thionyl Chloride → 3(2H)-Oxazoleacetyl chloride, 2-oxo-4,5-diphenyl-

https://huagongshe.com/reaction/2050394

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactant3(2H)-Oxazoleacetic acid, 2-oxo-4,5-diphenyl-HCID 10447200—
SolventDichloromethaneHCID 6344—
Product3(2H)-Oxazoleacetyl chloride, 2-oxo-4,5-diphenyl-HCID 10638955—

Reaction Steps

A mixture of 4,5-diphenyl-2-oxo-4-oxazolin-3-ylacetic acid (2.1 g, 7.1 mmole)[J. Org. Chem., 38, 3034 (1973)], 5 ml of thionyl chloride and 20 ml of methylene chloride is refluxed for 2.5 hours. After cooling to room temperature the solvent is removed in vacuo and the resulting oil crystallizes on standing. The product is triturated with ether-hexane to give 4,5-diphenyl-2-oxo-4-oxazolin-3-ylacetic acid chloride, mp 104°-112°.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04200572
Source datasetuspto-grants-1980_04
ORD IDord-b5785899027b4e6987c2943e1db90c92
Source noteuspto-grants-1980_04