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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1372535Generated: November 1, 2026

Potassium Carbonate → HCID 9966834, compound

https://huagongshe.com/reaction/1372535

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant5-Amino-4-bromo-2-ethyl-2-(3-oxopentyl)-1-indanoneHCID 17972752—
SolventAcetic AcidHCID 176—
SolventHydrochloric AcidHCID 313—
SolventEthyl AcetateHCID 8857—
ProductHCID 9966834HCID 996683490.3%

Reaction Conditions

Temperature80 °C

Reaction Steps

The crude diketone (1.17 g) from step 3 was dissolved in acetic acid (14 mL) and the solution was diluted with aqueous 6N HCl (14 mL). The resulting mixture was stirred and heated in an oil bath at 80° C. for 5 hours and then kept at room temperature for 3 days. The mixture was diluted with EtOAc (100 mL) and carefully basified with aqueous K2CO3 (200 mL). The organic portion was washed with brine, dried over MgSO4 filtered, and evaporated under vacuum. The residue was lyophilized from benzene to afford crude 7-amino-8-bromo-9a-ethyl-4-methyl-1,2,9,9a-tetrahydro-3H-fluoren-3-one (1.0 g) as an amorphous solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07157604B2
Source datasetuspto-grants-2007_01
ORD IDord-20a3673fac2b4d139bf8f92dcf078356
Source noteuspto-grants-2007_01