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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 614537Generated: October 25, 2026

Acetic Acid → 5,6-Dimethoxy-3[4(tetrahydropyran-2-carbonyl) piperazinyl]methylene oxindole

https://huagongshe.com/reaction/614537

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetic AcidHCID 176—
Reactant(Oxan-2-yl)(piperazin-1-yl)methanoneHCID 20385082—
ReactantHCID 178486553HCID 178486553—
SolventBenzeneHCID 241—
Product5,6-Dimethoxy-3[4(tetrahydropyran-2-carbonyl) piperazinyl]methylene oxindoleHCID 53824958—

Reaction Steps

5.00 g. of 5,6-dimethoxy-3-hydroxymethylene oxindole, 5,6 g. 1-(tetrahydropyran-2-carbonyl)piperazine and 2.1 g. acetic acid in 60 ml. benzene was reacted as described in Example 5 to give 6.18 g. of product, m.p. 208°-210° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04145422
Source datasetuspto-grants-1979_03
ORD IDord-f814de0416214f6dae9ee879af0ff4b5
Source noteuspto-grants-1979_03