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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1600340Generated: October 30, 2026

2-(Hydroxymethyl)-1H-benzimidazole → 1H-Benzimidazole-2-carboxaldehyde

https://huagongshe.com/reaction/1600340

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-(Hydroxymethyl)-1H-benzimidazoleHCID 78569—
CatalystManganese dioxideHCID 14801—
SolventEthanolHCID 702—
Product1H-Benzimidazole-2-carboxaldehydeHCID 76826—

Reaction Steps

A mixture of 2-Hydroxymethyl-benzimidazole (11.9 g) and MnO2 (59.5 g in ethanol (250 mL) was vigorously stirred for 2 days. The reaction was concentrated in vacuo, hot dimethylformamide was added and the mixture wasfiltered through celite. After removal of the solvent in vacuo the tan solid was triturated with ethanol to afford 2-Benzimidazolecarboxaldehyde as a tan powder.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05744603
Source datasetuspto-grants-1998_04
ORD IDord-577612f0378c4d57814c0c1dd2f0cc6e
Source noteuspto-grants-1998_04