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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 266888Generated: November 3, 2026

Trifluoroacetic acid → Spiro[1H-indene-1,4'-piperidin]-3(2H)-one trifluoroacetamide

https://huagongshe.com/reaction/266888

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
ReactantAnisoleHCID 7519—
Reactant1'-(t-butyloxycarbonyl)-3,4-dihydro-3-oxospiro[1H-indene-1,4'-piperidine]HCID 19030439—
SolventDichloromethaneHCID 6344—
ProductSpiro[1H-indene-1,4'-piperidin]-3(2H)-one trifluoroacetamideHCID 18467060—

Reaction Steps

A solution of the intermediate from Step A in a 1:1:0.5 mixture of trifluoroacetic acid, dichloromethane and anisole was stirred for 1 hour and then concentrated and azeotroped from toluene to give the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05652235
Source datasetuspto-grants-1997_07
ORD IDord-a9e5ba0371524a63b1d78d2181959dab
Source noteuspto-grants-1997_07