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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2278263Generated: October 30, 2026

Trifluoroacetic acid → 1-[[2-Methyl-4-(3-methylphenyl)phenyl]methyl]piperazine

https://huagongshe.com/reaction/2278263

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
ReactantTert-butyl 4-[[2-methyl-4-(3-methylphenyl)phenyl]methyl]piperazine-1-carboxylateHCID 89677194—
SolventDichloromethaneHCID 6344—
Product1-[[2-Methyl-4-(3-methylphenyl)phenyl]methyl]piperazineHCID 89677154101.7%

Reaction Steps

A 100 mL round-bottom flask was charged with tert-butyl 4-[[2-methyl-4-(3-methylphenyl)phenyl]methyl]piperazine-1-carboxylate (2.00 g, 5.26 mmol, 1.00 equiv), trifluoroacetic acid (8 mL), dichloromethane (40 mL). The resulting solution was stirred for 1 h at room temperature and concentrated under reduced pressure to yield 1.50 g (crude) of 1-[[2-methyl-4-(3-methylphenyl)phenyl]methyl]piperazine as light yellow oil. LCMS (ESI, m/z): 281 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09133148B2
Source datasetuspto-grants-2015_09
ORD IDord-91fe3e6cecd74c4285d2f6e7a0644706
Source noteuspto-grants-2015_09