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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1973426Generated: October 27, 2026

O-Phenylenediamine → Carbendazim

https://huagongshe.com/reaction/1973426

Reaction equation

Participants

RoleNameHCIDCharge
ReactantO-PhenylenediamineHCID 7243—
ReactantMethyl N-cyanocarbamateHCID 89023—
ProductCarbendazimHCID 2542994%

Reaction Steps

The salt of methyl cyanocarbamate with o-phenylenediamine (1.0 parts) is heated at 145°-50° C. for 10 minutes. This treatment gives 0.86 parts (94% yield) of 2-benzimidazolecarbamic acid, methyl ester.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03997553
Source datasetuspto-grants-1976_12
ORD IDord-16f34176f1404291970f6ca3cb56cabf
Source noteuspto-grants-1976_12