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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1775948Generated: November 2, 2026

Formaldehyde → 6-chloro-2,3,4,9-tetrahydro-2-methyl-9-(2-(3,3-dimethylcyclopentyl)ethyl)-1H-pyrido[3,4-b]indole

https://huagongshe.com/reaction/1775948

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
ReactantTrifluoroacetic acidHCID 6422—
ReactantHydrazine, (4-chlorophenyl)-, hydrochloride (1:1)HCID 71600—
Reactant4,4-Diethoxy-N-methylbutan-1-amineHCID 13994547—
Reactant2-(5-chloro-1-(2-(3,3-dimethylcyclopentyl)ethyl)-1H-indol-3-yl)-N-methylethanamineHCID 66911626—
Reactant1-(4-Chlorophenyl)-1-(2-(3,3-dimethylcyclopentyl)ethyl)hydrazineHCID 66911694—
Reactant3-(2-Bromoethyl)-1,1-dimethylcyclopentaneHCID 66911718—
SolventAcetonitrileHCID 6342—
SolventTriethylamineHCID 8471—
Product6-chloro-2,3,4,9-tetrahydro-2-methyl-9-(2-(3,3-dimethylcyclopentyl)ethyl)-1H-pyrido[3,4-b]indoleHCID 44242441—

Reaction Steps

The title compound is prepared by following General Methods 1, 3 and 4 using 4-chlorophenylhydrazine hydrochloride, 3-(2-bromoethyl)-1,1-dimethylcyclopentane, and triethylamine (General Method 1), 1-(4-chlorophenyl)-1-(2-(3,3-dimethylcyclopentyl)ethyl)hydrazine and 4,4-diethoxy-N-methylbutan-1-amine (General Method 3) and 2-(5-chloro-1-(2-(3,3-dimethylcyclopentyl)ethyl)-1H-indol-3-yl)-N-methylethanamine (Example 14), formaldehyde and TFA in acetonitrile (General Method 4).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09260429B2
Source datasetuspto-grants-2016_02
ORD IDord-27f24f7570e54901af842e07de19477d
Source noteuspto-grants-2016_02