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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 351908Generated: October 27, 2026

Pyridine → HCID 136386024, compound

https://huagongshe.com/reaction/351908

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
ReactantO-Methylhydroxylamine hydrochlorideHCID 521874—
ReactantHCID 22714681HCID 22714681—
SolventEthanolHCID 702—
ProductHCID 136386024HCID 13638602472.7%

Reaction Conditions

Temperature120 °C

Reaction Steps

4-oxo-4,5,6,7-tetrahydro-1H-indole-3-carboxylic acid (2-fluoro-phenyl)-amide (0.73 mmol), pyridine (2.2 mmol), EtOH (10 ml) and methoxylamine hydrochloride (2.2 mmol) are combined in a sealed tube and heated at 120° C. for 16 hours. The reaction mixture is cooled to room temperature, the solvent is removed in vacuo and the residue is treated with 10 ml of H2O for 5 minutes. The resulting solid is collected by vacuum filtration to yield 160 mg (72%) of 4-methoxyimino-4,5,6,7-tetrahydro-1H-indole-3-carboxylic acid (2-fluoro-phenyl)-amide as a white solid. 1H NMR (DMSO-d6) δ1.80-1.86 (m, 2H), 2.62-2.73 (m, 4H), 3.81 (s, 3H), 7.10-7.29 (m, 3H), 7.48 (d, 1H), 8.01 (t, 1H), 11.70 (s, 1H), 11.81 (s, 1H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06743817B2
Source datasetuspto-grants-2004_06
ORD IDord-ad7283a785874f17aa38992b2a815442
Source noteuspto-grants-2004_06