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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 591628Generated: October 31, 2026

Triethylamine → HCID 135939103, compound

https://huagongshe.com/reaction/591628

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
Reactant1-HydroxybenzotriazoleHCID 75771—
Reactant1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 2723939—
Reactant3,3,3-Trifluoropropionic acidHCID 2777972—
Reactant5,7-dimethoxy-2-(4-(piperazin-1-yl)phenyl)quinazolin-4(3H)-oneHCID 135939088—
SolventTetrahydrofuranHCID 8028—
ProductHCID 135939103HCID 13593910352.5%

Reaction Steps

To a solution of 5,7-dimethoxy-2-(4-(piperazin-1-yl)phenyl)quinazolin-4(3H)-one (0.200 g, 0.54 mmol) in THF (10 mL) was added EDCl (0.105 g, 0.54 mmol), HOBt (0.074 g, 0.54 mmol), Et3N (0.08 mL, 0.54 mmol) and trifluoropropionic acid (0.070 g, 0.54 mmol). The reaction was stirred at room temperature for 4 hours and concentrated in vacuo. Purification by flash chromatography, eluting with 20% to 100% of 92:7:1 CHCl3/MeOH/concentrate NH4OH in CH2Cl2, afforded the title compound (0.135 g, 52%). 1H NMR (300 MHz, DMSO-d6): δ 11.78 (s, 1H), 8.10 (d, J=9.0 Hz, 2H), 7.03 (d, J=9.0 Hz, 2H), 6.68 (d, J=2.3 Hz, 1H), 6.47 (d, J=2.3 Hz, 1H), 3.88 (s, 3H), 3.83 (s, 3H), 3.70-3.78 (m, 2H), 3.60-3.67 (m, 4H), 3.34-3.38 (m, 4H). APCI MS m/z 477 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09238640B2
Source datasetuspto-grants-2016_01
ORD IDord-906d6d65d5044ab6bb1f152284294f28
Source noteuspto-grants-2016_01