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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 973572Generated: October 29, 2026

O-Toluidine → 4(1H)-Quinazolinone

https://huagongshe.com/reaction/973572

Reaction equation

Participants

RoleNameHCIDCharge
ReactantO-ToluidineHCID 7242—
Reactant2-(Methylsulfanyl)quinazolin-4(1H)-oneHCID 135427104—
SolventEthanolHCID 702—
Product4(1H)-QuinazolinoneHCID 135408753140.8%

Reaction Steps

2-Methylthio-4-quinazolone (10.0 g, 0.052 mol) was fused with o-toluidine (8.35 g, 0.078 mol) at 160°. After 4 hours, the solid was treated with ethanol, and filtered to give 2-methylphenylamino)-4-quinazolone (10.7 g, 82%) m.p. 278°-280°.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05064833
Source datasetuspto-grants-1991_11
ORD IDord-0ed04304e00b428f86a81cd99908a783
Source noteuspto-grants-1991_11