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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1272755Generated: October 26, 2026

Water → ethyl 3-(4-fluorophenyl)-1H-indazole-5-carboxylate

https://huagongshe.com/reaction/1272755

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantPyridineHCID 1049—
ReactantAmmonium HydroxideHCID 14923—
Reactant1-acetyl-3-(4-fluorophenyl)-1H-indazole-5-carbonyl chlorideHCID 22480227—
SolventEthanolHCID 702—
Productethyl 3-(4-fluorophenyl)-1H-indazole-5-carboxylateHCID 22479944100%

Reaction Steps

To a solution of 1-acetyl-3-(4-fluorophenyl)-1H-indazole-5-carbonyl chloride (100 mg, 0.33 mmol) in ethanol (40 mL) was added pyridine (0.5 mL). The reaction was stirred overnight at room temperature when saturated ammonium hydroxide (1 mL) was added. The reaction was stirred overnight when water (150 mL) was added and the solution filtered. The solid was dried to recover the product (100 mg, 100% yield). 1H NMR (DMSO-d6) δ 13.6 (s, 1H), 8.62 (s, 1H), 8.03–7.9 (m, 3H), 7.70 (d, 1H), 7.61 (d, 1H), 7.42 (t, 2H); ES-MS (m/z) 285 [M+1]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07208513B2
Source datasetuspto-grants-2007_04
ORD IDord-99838b70129941ccae365370ccbc5100
Source noteuspto-grants-2007_04