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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1474400Generated: October 30, 2026

Trifluoroacetic acid → 5-(methyloxy)-1-(piperazin-1-ylmethyl)-3,4-dihydro-1H-isochromene-6-carbonitrile

https://huagongshe.com/reaction/1474400

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactant1,1-dimethylethyl-4-{[6-cyano-5-(methyloxy)-3,4-dihydro-1H-isochromen-1-yl]methyl}piperazine-1-carboxylateHCID 86647323—
SolventDichloromethaneHCID 6344—
Product5-(methyloxy)-1-(piperazin-1-ylmethyl)-3,4-dihydro-1H-isochromene-6-carbonitrileHCID 67515613—

Reaction Steps

To a solution of 1,1-dimethylethyl-4-{[6-cyano-5-(methyloxy)-3,4-dihydro-1H-isochromen-1-yl]methyl}piperazine-1-carboxylate (30 mg, 0.08 mmol) in 5 mL of DCM was added 5 mL of TFA was stirred at room temperature for 1 hours, and the reaction was concentrated. The resulting crude 5-(methyloxy)-1-(piperazin-1-ylmethyl)-3,4-dihydro-1H-isochromene-6-carbonitrile was directly used in next step.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09018211B2
Source datasetuspto-grants-2015_04
ORD IDord-aee573fc39f04973a35d28ee428afa28
Source noteuspto-grants-2015_04