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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 732123Generated: October 27, 2026

Thionyl Chloride → 3-(1-Chloroethyl)-5-(3-chlorophenyl)-[1,2,4]oxadiazole

https://huagongshe.com/reaction/732123

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactant1-[5-(3-Chlorophenyl)-1,2,4-oxadiazol-3-yl]ethanolHCID 57837941—
CatalystDimethylformamideHCID 6228—
Product3-(1-Chloroethyl)-5-(3-chlorophenyl)-[1,2,4]oxadiazoleHCID 5783797993%

Reaction Conditions

Temperature70 °C

Reaction Steps

5 drops of DMF were added to 1-[5-(3-chlorophenyl)-[1,2,4]oxadiazol-3-yl]ethanol (12.3 g, 54.9 mmol) in SOCl2 (150 mL) and the reaction was heated at 70° C. for 5 h. The excess SOCl2 was evaporated and the residue was purified by column chromatography (Hep 100% to Hep/EA=5/1) to give 12.4 g (93%) of the title compound. 1H NMR: 1.96 (d, 3H) 5.20 (q, 1H) 7.46 (t, 1H) 7.59 (m, 1H) 8.04 (m, 1H) 8.17 (t, 1H)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07585881B2
Source datasetuspto-grants-2009_09
ORD IDord-ede81e805f0143ce8c4c94ac5cc74b3b
Source noteuspto-grants-2009_09