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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1275537Generated: November 2, 2026

3-(1,4-Dioxa-spiro[4,5]dec-7-en-8-yl)-5-fluoro-1H-indole → 3-(1,4-Dioxa-spiro[4,5]dec-8-yl)-5-fluoro-1H-indole

https://huagongshe.com/reaction/1275537

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-(1,4-Dioxa-spiro[4,5]dec-7-en-8-yl)-5-fluoro-1H-indoleHCID 10516380—
CatalystPalladiumHCID 23938—
SolventEthanolHCID 702—
Product3-(1,4-Dioxa-spiro[4,5]dec-8-yl)-5-fluoro-1H-indoleHCID 10564325101.7%

Reaction Steps

A mixture of 4-(5-fluoro-1H-3-indolyl)-cyclohex-3-en-one ethylene ketal (2.7 g, 0.01 mol) and 10% palladium on carbon (1.2 g) in ethanol (200 ml) was hydrogenated for 4 days. The catalyst was filtered off and the filtrate was concentrated. The product was dried under vacuum to afford 2.8 g (100%) of product as a white solid: mp 183-185° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06162803
Source datasetuspto-grants-2000_12
ORD IDord-efdcdd267f3b4f2cade45b0c69726392
Source noteuspto-grants-2000_12