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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2061476Generated: November 1, 2026

Water → 1,1-Dimethylethyl 4-[(2-nitro-3-fluoro-5-methoxyphenyl)amino]-piperidinecarboxylate

https://huagongshe.com/reaction/2061476

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantEthyl AcetateHCID 8857—
Reactant4-Amino-1-Boc-piperidineHCID 1268291—
Reactant1,3-Difluoro-5-methoxy-2-nitrobenzeneHCID 10012710—
SolventDimethylformamideHCID 6228—
SolventDiisopropylethylamineHCID 81531—
Product1,1-Dimethylethyl 4-[(2-nitro-3-fluoro-5-methoxyphenyl)amino]-piperidinecarboxylateHCID 59683259—

Reaction Steps

4-Nitro-3,5-difluoroanisole (D11) (370 mg, 2 mmol) was dissolved in dry dimethylformamide (3 ml) and diisopropylethylamine (0.4 ml), and 1,1-dimethylethyl 4-amino-1-piperidinecarboxylate (400 mg, 2 mmol) were added at room temperature. The mixture was stirred at room temperature for 18 h, then cooled to room temperature and water and ethyl acetate added. The organic layer was dried over MgSO4, filtered and evaporated, and the residue crystallised from diethyl ether to afford the title compound, 380 mg. M−−H=368.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08283364B2
Source datasetuspto-grants-2012_10
ORD IDord-25a564e08ce1411988f49158fe9c586b
Source noteuspto-grants-2012_10