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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1773247Generated: October 31, 2026

Water → 2-(8-chloro-2-methyl-3,4-dihydro-1H-pyrido[4,3-b]indol-5(2H)-yl)-1-(4-chlorophenyl)ethanone

https://huagongshe.com/reaction/1773247

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantPotassium HydroxideHCID 14797—
Reactant8-chloro-2-methyl-1H,2H,3H,4H,5H-pyrido(4,3-b)indoleHCID 19615—
Reactantp-Chlorophenacyl bromideHCID 68303—
SolventN-methyl-2-pyrrolidoneHCID 13387—
Product2-(8-chloro-2-methyl-3,4-dihydro-1H-pyrido[4,3-b]indol-5(2H)-yl)-1-(4-chlorophenyl)ethanoneHCID 49779309—

Reaction Steps

8-Chloro-2-methyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (220 mg, 1 mmol) was dissolved in 2 mL NMP and to this was added KOH (560 mg, 10 mmol) followed by 2-bromo-1-(4-chloro-phenyl)-ethanone (233 mg, 1 mmol) The reaction was kept overnight at RT. Water was added and the compound extracted with EtOAc. The organic layer was washed with water, concentrated and purified by column chromatography using silica gel (#100-200 mesh) using 0-3% MeOH:DCM as eluent. The compound was further purified by reverse phase chromatography. 1HNMR (CD3OD, TFA salt) d (ppm): 8.10 (m, 2H), 7.60 (d, 2H), 7.50 (s, 1H), 7.30 (d, 1H), 7.10 (m, 1H), 5.80 (m, 2H), 4.70 (m, 1H), 4.40 (m, 1H), 3.80 (m, 1H), 3.60 (m, 1H), 3.05 (s, 5H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09255094B2
Source datasetuspto-grants-2016_02
ORD IDord-01dff0510a1549a2a992733426fb8b3c
Source noteuspto-grants-2016_02