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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1749864Generated: October 26, 2026

Toluene → HCID 178520033, compound

https://huagongshe.com/reaction/1749864

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTolueneHCID 1140—
ReactantSodium SulfateHCID 24436—
ReactantMethyl 5-fluoro-1H-indazole-3-carboxylateHCID 12689297—
ReactantDiisobutylaluminumhydrideHCID 21225700—
SolventTetrahydrofuranHCID 8028—
ProductHCID 178520033HCID 17852003343.5%

Reaction Conditions

Temperature-10 °C

Reaction Steps

A solution of methyl 5-fluoro-1H-indazole-3-carboxylate (0.582 g, 3.00 mmol) in THF (20 mL) was cooled to −10° C., and added dropwise with a 1 M solution of diisobutylaluminum hydride in toluene (10.8 mL, 10.8 mmol) over 5 minutes. The reaction mixture was stirred at −10° C. for 1 hour, and then overnight at room temperature. The reaction mixture was added dropwise with saturated aqueous sodium sulfate under ice cooling to terminate the reaction, and then filtered through Celite. The filtrate was concentrated, and the resulting residue was purified by silica gel column chromatography (chloroform/methanol) to obtain (5-fluoro-1H-indazol-3-yl)methanol (0.217 g, 43%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09156827B2
Source datasetuspto-grants-2015_10
ORD IDord-fe148362102f482198a9d6b31a2bcc5c
Source noteuspto-grants-2015_10