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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1808883Generated: October 30, 2026

Triethylamine → HCID 66691541, compound

https://huagongshe.com/reaction/1808883

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
Reactanttert-Butyl piperazine-1-carboxylateHCID 143452—
Reactant4-Amino-2-fluoro-5-nitrobenzonitrileHCID 10419793—
SolventDimethylformamideHCID 6228—
ProductHCID 66691541HCID 6669154144.9%

Reaction Conditions

Temperature80 °C

Reaction Steps

To a solution of 4-amino-2-fluoro-5-nitrobenzonitrile (132 mg, 0.730 mmol) and tert-butyl piperazine-1-carboxylate (136 mg, 0.730 mmol) in DMF (3 ml) was added triethylamine (0.102 ml, 0.730 mmol). The mixture was heated to 80° C. in a Microwave reactor for 50 min., cooled to r.t., purified by prep-HPLC to afford tert-butyl 4-(5-amino-2-cyano-4-nitrophenyl)piperazine-1-carboxylate (120 mg, 0.328 mmol, 44.9% yield). 1H-NMR (CD3OD, 500 MHz): δ 8.42 (1H, s), 6.45 (1H, s), 3.65-3.61 (4H, m), 3.28-3.25 (4H, m), 1.51 (9H, s). m/e (M+H): 348.3.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08362004B2
Source datasetuspto-grants-2013_01
ORD IDord-5667d1f6d7954aad9c8f0552851352bb
Source noteuspto-grants-2013_01