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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1966462Generated: October 31, 2026

Ethylamine hydrochloride → HCID 46199220, compound

https://huagongshe.com/reaction/1966462

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthylamine hydrochlorideHCID 11198—
ReactantDiisopropylethylamineHCID 81531—
ReactantP,P-Diphenylphosphinic azideHCID 199401—
Reactant2-(Benzylamino)-4-(4-benzoylpiperazin-1-yl)benzoic acidHCID 58425660—
SolventTetrahydrofuranHCID 8028—
ProductHCID 46199220HCID 4619922033%

Reaction Steps

A solution of 2-(benzylamino)-4-(4-benzoylpiperazin-1-yl)benzoic acid (50 mg, 0.12 mmol), ethylamine hydrochloride (36 mg, 0.36 mmol), DIPEA (0.20 ml, 1.2 mmol) and diphenylphosphoryl azide (0.026 ml, 0.12 mmol) in 15 ml THF was stirred for 16 hours. The run was quenched with 1 ml water and all the solvents were evaporated under vacuum. 2-(benzylamino)-N-ethyl-4-(4-benzoylpiperazin-1-yl)benzamide (15 mg, 33%) was obtained by flash column chromatograph (60% ethyl acetate in hexanes), and its hydrochloride was made by bubbling HCL gas in ether solution. 1H NMR (500 MHz, DMSO-d6) δ (ppm) 1.10 (t, J=7.2 Hz, 3H), 3.19-3.47 (m, br, 10H), 4.40 (s, 2H), 6.43 (t, J=8.3 Hz, 2H), 7.27-7.59 (m, 13H), 8.26 (s, 1H). 13C NMR (125 MHz, DMSO-d6): δ (ppm) 14.8, 33.6, 47.5, 127.0, 127.2, 127.8, 128.4, 128.5, 129.4, 129.6, 135.7, 168.3, 169.0.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08420640B2
Source datasetuspto-grants-2013_04
ORD IDord-604085c5ccd24292b772a69af31ed450
Source noteuspto-grants-2013_04