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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 591626Generated: November 1, 2026

Triethylamine → HCID 135939101, compound

https://huagongshe.com/reaction/591626

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
Reactant2-Thiophenecarboxylic acidHCID 10700—
Reactant1-HydroxybenzotriazoleHCID 75771—
Reactant1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 2723939—
Reactant5,7-dimethoxy-2-(4-(piperazin-1-yl)phenyl)quinazolin-4(3H)-oneHCID 135939088—
SolventTetrahydrofuranHCID 8028—
ProductHCID 135939101HCID 13593910130.9%

Reaction Steps

To a solution of 2-thiophenecarboxylic acid (0.087 g, 0.68 mmol) in THF (20 mL) was added HOBt (0.099 g, 0.74 mmol), EDCl (0.141 g, 0.74 mmol), Et3N (0.10 mL, 0.74 mmol) and 5,7-dimethoxy-2-(4-(piperazin-1-yl)phenyl)quinazolin-4(3H)-one (0.250 g, 0.68 mmol). The resulting solution was stirred at room temperature for 4 hours. The solution was concentrated in vacuo. The material was purified by flash chromatography, eluting with 0% to 50% of 92:7:1 CHCl3/MeOH/concentrated NH4OH in CH2Cl2, to afford the title compound (0.100 g, 30%). 1H NMR (300 MHz, DMSO-d6): δ 11.78 (s, 1H), 8.12 (d, J=9.0 Hz, 2H), 7.75-7.84 (m, 1H), 7.46-7.53 (m, 1H), 7.12-7.20 (m, 1H), 7.03 (d, J=9.1 Hz, 2H), 6.69 (d, J=2.3 Hz, 1H), 6.47 (d, J=2.3 Hz, 1H), 3.88 (s, 3H), 3.83 (s, 3H), 3.74-3.92 (m, 4H), 3.37-3.49 (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-4243724e15654e6798104356fcd1d83e
Source noteuspto-grants-2016_01