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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 973909Generated: October 29, 2026

Toluene → HCID 533894, compound

https://huagongshe.com/reaction/973909

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTolueneHCID 1140—
Reactant2-EthylhexylamineHCID 7719—
ReactantMethyl CarbamateHCID 11722—
CatalystDibutyltin oxideHCID 61221—
SolventMethanolHCID 887—
ProductHCID 533894HCID 53389491.7%

Reaction Conditions

Temperature110 °C

Reaction Steps

Into a 300 ml reaction vessel equipped with a distillation apparatus were introduced 50 g of 2-ethylhexylamine, 29 g of methyl carbamate and 100 ml of toluene, and to the mixture was added 0.1 g of dibutyl tin oxide as a catalyst and heated with stirring. Methanol formed during the reaction was removed, when the reflux temperature was raised to 110° C., i.e., the boiling point of toluene, the distillation apparatus was taken off and instead a reflux condenser was attached and the mixture was refluxed by heating for 30 minutes with stirring, then allowed to cool. The toluene was distilled off under reduced pressure, and the residue was washed with n-hexane and collected by filtration to obtain 61 g of N-(2-ethylhexyl)urea.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05066573
Source datasetuspto-grants-1991_11
ORD IDord-8e461ebc2c304c5ab351036520c9b098
Source noteuspto-grants-1991_11