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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2423129Generated: October 31, 2026

Formaldehyde → HCID 67243541, compound

https://huagongshe.com/reaction/2423129

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
Reactant2-(Methylamino)ethanolHCID 8016—
Reactant7-methyl-1H-indol-5-olHCID 18932734—
SolventEthanolHCID 702—
SolventDichloromethaneHCID 6344—
ProductHCID 67243541HCID 6724354177.2%

Reaction Conditions

Temperature50 °C

Reaction Steps

A mixture of paraformaldehyde (82.0 mg, 2.71 mmol) and 2-methylaminoethanol (0.218 mL, 2.71 mmol) in EtOH (2 mL) was heated at 50° C. for 20 minutes. 7-methyl-1H-indol-5-ol (Intermediate 11, 500 mg, 3.4 mmol) in EtOH (10 mL) was added and the mixture was stirred for 1.5 hours at room temperature. The mixture was diluted with DCM (15 mL) and divided in two portions to be purified on two SCX-columns (5 g) preconditioned with DCM/MeOH 1:1 (20 mL) and eluted with DCM/MeOH 1:1 (50 mL) (contains only sm) and 1 M MeOH (40 mL) (contains product) to give 490 mg of a brown oil that turned solid. MS m/z 235 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07960374B2
Source datasetuspto-grants-2011_06
ORD IDord-12e19439141445c88474aa8166c3d198
Source noteuspto-grants-2011_06