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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1880407Generated: October 30, 2026

Methanol → methyl 7-ethyl-1H-indazole-5-carboxylate

https://huagongshe.com/reaction/1880407

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanolHCID 887—
ReactantSulfuric AcidHCID 1118—
Reactant7-ethyl-1H-indazole-5-carboxylic acidHCID 55271465—
Productmethyl 7-ethyl-1H-indazole-5-carboxylateHCID 6014427847%

Reaction Steps

To a solution of 7-ethyl-1H-indazole-5-carboxylic acid (500 mg, 2.63 mmol) in MeOH (15 mL) was added conc. H2SO4 (0.25 mL). The mixture was heated at reflux overnight. The solvent was removed under reduced pressure to afford a tan solid that was purified by flash chromatography (40 g column) using 15-30% EtOAc/heptane to afford methyl 7-ethyl-1H-indazole-5-carboxylate (252 mg, 47%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08318762B2
Source datasetuspto-grants-2012_11
ORD IDord-6386bd9dc3154cac8e199799417c73ef
Source noteuspto-grants-2012_11