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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1749869Generated: October 27, 2026

Toluene → HCID 178520024, compound

https://huagongshe.com/reaction/1749869

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTolueneHCID 1140—
ReactantSodium SulfateHCID 24436—
ReactantMethyl 5-bromo-1H-indazole-3-carboxylateHCID 12689298—
ReactantDiisobutylaluminumhydrideHCID 21225700—
SolventTetrahydrofuranHCID 8028—
ProductHCID 178520024HCID 17852002436.2%

Reaction Conditions

Temperature-10 °C

Reaction Steps

A solution of methyl 5-bromo-1H-indazole-3-carboxylate (2.21 g, 8.66 mmol) in THF (60 mL) was cooled to −10° C., and added dropwise with a 1 M solution of diisobutylaluminum hydride in toluene (36.0 mL, 36.0 mmol). After completion of the addition, the mixture was stirred at −10° C. for 1 hour, and then stirred 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 solid was suspended in methylene chloride and thereby washed to obtain (5-bromo-1H-indazol-3-yl)methanol (0.712 g, 36%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09156827B2
Source datasetuspto-grants-2015_10
ORD IDord-8cb01f961f884fce924a3c5aaf4275c3
Source noteuspto-grants-2015_10