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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2183116Generated: October 27, 2026

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

https://huagongshe.com/reaction/2183116

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 numberUS06897231B2
Source datasetuspto-grants-2005_05
ORD IDord-2fb4b10d2553458ab71e93fd2c97d148
Source noteuspto-grants-2005_05