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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 889996Generated: October 30, 2026

1-Methyl-4-piperidone → HCID 21959544, compound

https://huagongshe.com/reaction/889996

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-Methyl-4-piperidoneHCID 74049—
ReactantSodium BicarbonateHCID 516892—
ReactantSodium triacetoxyborohydrideHCID 5049666—
Reactant3,3-Dimethyl-6-nitroindolineHCID 21959466—
SolventAcetic AcidHCID 176—
SolventDichloromethaneHCID 6344—
ProductHCID 21959544HCID 21959544—

Reaction Steps

3,3-Dimethyl-6-nitroindoline (0.8 g) was dissolved in CH2Cl2 (50 mL), N-methyl-4-piperidone (1 g) was added to the mixture, followed by 2.5 g NaBH(OAc)3 and glacial AcOH (1 mL). The mixture was stirred at RT overnight. Saturated NaHCO3 solution (50 ml) was added to the reaction mixture and stirred for 1 h. The resulting mixture was separated by separation funnel, the organic layer was extracted once with saturated NaHCO3 solution and once with brine, the resulting organic layer was dried over MgSO4, filtered and concentrated in vacuo. The crude material was purified by flash chromatography on silica gel with 9:1 EtOAc:MeOH to afford the title compound as an orange oil. MS: 290 (M+1). Calc'd. for C16H23N3O2—289.37.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06995162B2
Source datasetuspto-grants-2006_02
ORD IDord-8191f92403c34d33b0e4fe38dc16d55f
Source noteuspto-grants-2006_02