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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1076880Generated: November 1, 2026

O-Phenylenediamine → Thiophamine

https://huagongshe.com/reaction/1076880

Reaction equation

Participants

RoleNameHCIDCharge
ReactantO-PhenylenediamineHCID 7243—
ReactantMethoxycarbonyl isothiocyanateHCID 552246—
SolventBenzeneHCID 241—
ProductThiophamineHCID 3032830—

Reaction Steps

Methyl 4-(o-aminophenyl)-3-thioallophanate is prepared by dissolving 11.7 parts of methoxycarbonyl isothiocyanate in 50 parts of benzene and adding this to 10.8 parts of o-phenylenediamine in 200 parts of benzene at 10° - 15°C. After stirring for one hour at room temperature, 13.7 parts of methyl 4-(o-aminophenyl)-3-thioallophanate is recovered by filtration, m.p. 187°C.(D).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03958007
Source datasetuspto-grants-1976_05
ORD IDord-5d008e8d7b8740c18c42e130d39d29e1
Source noteuspto-grants-1976_05