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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 630019Generated: October 25, 2026

Formaldehyde → (3-chloro-2H-indazol-2-yl)methanol

https://huagongshe.com/reaction/630019

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
Reactant3-Chloro-1H-indazoleHCID 95894—
SolventWaterHCID 962—
Product(3-chloro-2H-indazol-2-yl)methanolHCID 5958951099.7%

Reaction Steps

In a 250 mL round bottom flask, 3-chloro-2H-indazole (1.95 g, 10 mmol), 30% HCHO (2 mL, 20 mmol) were mixed in water (10 mL). The reaction mixture was refluxed for 2 hours. After cooling down to room temperature, the solid was filtered, washed with water, and dried under vacuum to provide (3-chloro-2H-indazol-2-yl)methanol (1.82 g, 99% yield).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09315521B2
Source datasetuspto-grants-2016_04
ORD IDord-df448b7d99c644bc9ce7349e01de42a3
Source noteuspto-grants-2016_04