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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1966432Generated: October 30, 2026

Water → HCID 58425618, compound

https://huagongshe.com/reaction/1966432

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantPiperazineHCID 4837—
Reactant5-bromo-2-nitro-n-phenylanilineHCID 238696—
SolventN-methyl-2-pyrrolidoneHCID 13387—
ProductHCID 58425618HCID 5842561865%

Reaction Steps

A solution of N-(5-bromo-2-nitrophenyl)benzenamine (250 mg, 0.85 mmol) and piperazine (366 mg, 4.26 mmol) in NMP (1 mL) was heated to 110° C. for 16 h. The solution whole cooled to room temperature to which was slowly added H2O (5 mL). The resulting yellow precipitate was filtered, washed with 10 mL of water, dried (high vacuum, 14 h) to furnish 2-nitro-N-phenyl-5-(piperazin-1-yl)aniline (165 mg, 0.55 mmol), 65% yield. 1H NMR (500 MHz, CDCl3) d (ppm) 9.89 (s, 1H), 8.15 (d, J=9.0 Hz, 1H), 7.45 (m, 2H), 7.34 (d, J=7.0 Hz, 2H), 7.25 (t, J=7.0 Hz, 1H), 6.43 (d, J=2.5 Hz, 1H), 6.35 (dd, 2.5 Hz, 9.75 Hz, 1H), 3.29 (m, 4H), 2.92 (m, 4H).+ESI HRMS (calcd for C16H19N4O2, M+1) 299.1508, found 391.150

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08420640B2
Source datasetuspto-grants-2013_04
ORD IDord-5a921f78178a434a9acc41c394a88753
Source noteuspto-grants-2013_04