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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1365145Generated: October 31, 2026

4-Nitrophenyl chloroformate → HCID 22462238, compound

https://huagongshe.com/reaction/1365145

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-Nitrophenyl chloroformateHCID 82129—
Reactanttert-Butyl piperazine-1-carboxylateHCID 143452—
SolventDichloromethaneHCID 6344—
SolventTriethylamineHCID 8471—
ProductHCID 22462238HCID 2246223899.7%

Reaction Steps

To N-BOC-piperazine (500 mg) in dichloromethane (5 mL) and triethylamine (0.41 ml) was added 4-nitrophenyl chloroformate (541 mg). After 1 hour the reaction mixture was diluted with dichloromethane, washed with brine, dried (MgSO4) and the solvent removed in vacuo to yield piperazine-1,4-dicarboxylic acid tert-butyl ester 4-nitro-phenyl ester (940 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07888352B2
Source datasetuspto-grants-2011_02
ORD IDord-577d4bf31d6948959cbf209f57ce4bad
Source noteuspto-grants-2011_02