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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 507334Generated: October 25, 2026

Potassium Carbonate → (S)-(+)-4-(2,3-Epoxypropoxy)carbazole

https://huagongshe.com/reaction/507334

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant4-HydroxycarbazoleHCID 104251—
Reactant(-)-EpichlorohydrinHCID 2734062—
SolventIsopropanolHCID 3776—
Product(S)-(+)-4-(2,3-Epoxypropoxy)carbazoleHCID 1087920853%

Reaction Conditions

Temperature85 °C

Reaction Steps

To a solution of 4-Hydroxycarbazole (10.98 g, 0.06 mole) dissolved in IPA (60 mL) was added K2CO3 (20.73 g, 0.15 mole), followed by (R)-(−)-epichlorohydrin (7 ml, 0.09 mole) and the reaction mixture was slowly heated to 80-90° C. and then refluxed for 5 hours. Subsequently the reaction mixture was cooled to room temperature, worked up and purified following the procedure similar to one described in step I for the synthesis of example 23, to afford the desired compound as a light brown colored solid (7.56 g, 53%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07786142B2
Source datasetuspto-grants-2010_08
ORD IDord-1664a56bfa674a54a21f971ad01bac96
Source noteuspto-grants-2010_08