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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1383956Generated: November 2, 2026

Hydrochloric Acid → Bendazol [INN:DCF]

https://huagongshe.com/reaction/1383956

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantWaterHCID 962—
ReactantO-PhenylenediamineHCID 7243—
ReactantPhenylacetonitrileHCID 8794—
SolventMethanolHCID 887—
ProductBendazol [INN:DCF]HCID 12132—

Reaction Conditions

Temperature0 °C

Reaction Steps

A 1 M solution of benzyl cyanide in anhydrous methanol was treated with hydrogen chloride gas at 0° C. for about thirty minutes. The mixture was stirred for two hours at 0° C. and then a 1 M solution of diaminobenzene was added and the resulting solution was stirred at 0° C. The progress of the reaction was monitored by thin layer chromatography. The reaction mixture was then poured into water. The unreacted nitrile was extracted with ethyl acetate. The aqueous layer was neutralized with 1 N sodium hydroxide. The organic fraction was extracted with ethyl acetate and condensed. The desired title product was recrystallized from methanol/water.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06255494B1
Source datasetuspto-grants-2001_07
ORD IDord-223aa794146644aaba999122c9a326c5
Source noteuspto-grants-2001_07