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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 897238Generated: October 30, 2026

Triethylamine → HCID 22348107, compound

https://huagongshe.com/reaction/897238

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
Reactant1-[(2H-1,3-Benzodioxol-5-yl)methyl]piperidin-4-amineHCID 11673104—
Reactant4-Chloro-6-(trifluoromethoxy)-2H-1-benzopyran-2-oneHCID 22348157—
SolventWaterHCID 962—
SolventN-methyl-2-pyrrolidoneHCID 13387—
ProductHCID 22348107HCID 2234810752.5%

Reaction Conditions

Temperature220 °C

Reaction Steps

To a suspension of 4-chloro-6-trifluoromethoxycoumarin (0.04 g, 0.15 mmol) in 1 ml N-methylpyrrolidone in a Smith reaction vial was added 1-benzo[1,3]dioxol-5-ylmethyl-piperidin-4-ylamine (0.039 g, 0.16 mmol) followed by 0.042 ml of triethylamine. The reaction vessel was sealed with a crimper and the reaction heated at 220° C. for 20 minutes in a Smith Synthesizer. The reaction was diluted with 20 ml water and extracted with 3×10 ml ethyl acetate. The combined organic layers were dried over MgSO4, filtered, evaporated and chromatographed using 2% CH3OH:DCM to afford 36.4 mg (52%) of a white solid. MS (ESI (+)) m/e 463 (M+H)+; 1H NMR (300 MHz, MeOD4) δ ppm 1.65-1.75 (m, 2H), 2.0-2.1 (m, 2H), 2.25 (m, 2H), 3.0 (m, 2H), 3.5 (s, 2H), 3.6 (m, 1H), 5.37 (s, 1H), 5.9 (s, 2H), 6.75 (m, 2H), 6.9 (m, 1H), 7.45 (m, 1H), 7.55 (m, 1H), 8.10 (br s, 1H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06921821B2
Source datasetuspto-grants-2005_07
ORD IDord-6691484d0ffd42bfb54b387faa5d4678
Source noteuspto-grants-2005_07