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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 869553Generated: October 26, 2026

Dimethylamine → N,N-Dimethyl-1H-benzimidazol-2-amine

https://huagongshe.com/reaction/869553

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDimethylamineHCID 674—
ReactantWaterHCID 962—
Reactant2-ChlorobenzimidazoleHCID 78572—
SolventDimethylformamideHCID 6228—
ProductN,N-Dimethyl-1H-benzimidazol-2-amineHCID 1784689%

Reaction Conditions

Temperature200 °C

Reaction Steps

[step 1] Commercially available 2-chloro-1H-benzo[d]imidazole (250 mg, 1.64 mmol) was dissolved in DMF (4.7 mL), dimethylamine (50% aqueous solution, 0.50 mL, 4.92 mmol) was added, and the mixture was stirred with heating at 200° C. for 30 min in an Emrys Optimizer microwave synthesizer. Water was added to the mixture, and the precipitated crystals were collected by suction filtration to give N,N-dimethyl-1H-benzo[d]imidazole-2-amine (234 mg, 89%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08969345B2
Source datasetuspto-grants-2015_03
ORD IDord-4b5530a2e1c84b01a6ac34fd38369dba
Source noteuspto-grants-2015_03