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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 518171Generated: October 26, 2026

1-Methyl-4-piperidone → 6-Bromo-1'-methylspiro[chroman-2,4'-piperidin]-4-one

https://huagongshe.com/reaction/518171

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-Methyl-4-piperidoneHCID 74049—
Reactant5'-Bromo-2'-hydroxyacetophenoneHCID 95991—
Reactant(E)-3-{1'-tert-butoxycarbonyl-4-oxo-spiro[chromane-2,4'-piperidine]-6-yl}-acrylic acid methyl esterHCID 52952087—
Product6-Bromo-1'-methylspiro[chroman-2,4'-piperidin]-4-oneHCID 57720805—

Reaction Steps

1′-Methyl-6-bromo-spiro[chromane-2,4′-piperidine]-4-one was synthesized according to the procedure for the preparation of Intermediate 1, Step A, using N-methyl-4-piperidone (1.13 g, 10 mmol), and 2-hydroxy-5-bromoacetophenone to give an orange solid (2.29 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09115148B2
Source datasetuspto-grants-2015_08
ORD IDord-651c21b9a62b426dbe31930845b97921
Source noteuspto-grants-2015_08