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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2199723Generated: October 29, 2026

Dimethyl Sulfoxide → ethyl 7-bromo-3-(3-oxopropyl)-1H-indole-2-carboxylate

https://huagongshe.com/reaction/2199723

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDimethyl SulfoxideHCID 679—
ReactantTriethylamineHCID 8471—
ReactantPyridine sulfateHCID 11789763—
Reactantethyl 7-bromo-3-(3-hydroxypropyl)-1H-indole-2-carboxylateHCID 68943187—
SolventDichloromethaneHCID 6344—
SolventEthyl AcetateHCID 8857—
Productethyl 7-bromo-3-(3-oxopropyl)-1H-indole-2-carboxylateHCID 86628021—

Reaction Steps

To a cooled (0° C.) mixture of EXAMPLE 1B (3.26 g) in dichloromethane (5 mL) was added DMSO (1 mL) and triethylamine (0.835 mL) followed by pyridine sulfate (636 mg). The mixture was stirred for 2 hours, diluted with ethyl acetate (150 mL), and washed with 5% HCl, saturated NaHCO3, water and brine and dried (Na2SO4), filtered and concentrated.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09359296B2
Source datasetuspto-grants-2016_06
ORD IDord-15d8444781cc4af1b8b850b4e72feca6
Source noteuspto-grants-2016_06