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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 481655Generated: October 30, 2026

Oxalic Acid → HCID 21268306, compound

https://huagongshe.com/reaction/481655

Reaction equation

Participants

RoleNameHCIDCharge
ReactantOxalic AcidHCID 971—
ReactantPotassium HydroxideHCID 14797—
ReactantPiperonylamineHCID 2723901—
Reactant4-(3-chloropropoxy)-1H-indoleHCID 11694169—
ReactantHCID 19956046HCID 19956046—
Reactant4-CyclopropylmethoxyindoleHCID 21268294—
CatalystPalladiumHCID 23938—
SolventMethanolHCID 887—
SolventEthyl AcetateHCID 8857—
ProductHCID 21268306HCID 21268306—

Reaction Steps

The title compound was prepared according to Example 99 from 1-chloro-3-(1H-indole-4-oxy) propane and 4-(4-cyclopropylmethoxy-1H-indol-3-yl) piperidine (which was prepared by condensing 4-cyclopropylmethoxyindole with 4-piperidone monohydrate hydrochloride in refluxing methanol with potassium hydroxide, followed by reduction of the unsaturation with palladium on carbon in methanol). The resulting free base was dissolved in ethyl acetate, and precipitated with one equivalent of oxalic acid in ethyl acetate in 57% overall yield as a white foam . FDMS m/e=443 (M+ of free base).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05789402
Source datasetuspto-grants-1998_08
ORD IDord-517141e783fa4182bba54b8dfdcb4548
Source noteuspto-grants-1998_08