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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1475308Generated: November 1, 2026

Hydrochloric Acid → 5-Bromo-6-(pyrrolidine-1-sulfonyl)-2,3-dihydro-1H-indole

https://huagongshe.com/reaction/1475308

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodium BicarbonateHCID 516892—
Reactant1-[5-Bromo-6-(pyrrolidine-1-sulfonyl)-2,3-dihydro-indol-1-yl]-ethanoneHCID 46374597—
Solvent1,4-DioxaneHCID 31275—
Product5-Bromo-6-(pyrrolidine-1-sulfonyl)-2,3-dihydro-1H-indoleHCID 8672394072.7%

Reaction Conditions

Temperature100 °C

Reaction Steps

A mixture of 1-[5-bromo-6-(pyrrolidine-1-sulfonyl)-2,3-dihydro-indol-1-yl]-ethanone (0.203 g, 0.54 mmol), concentrated hydrochloric acid (2 mL) and 1,4-dioxane (5 mL) was heated at 100° C. in a sealed vessel for 2 h. The mixture was cooled then neutralised with saturated aqueous sodium hydrogen carbonate and resulting solid collected by filtration to give the title compound (0.13 g, 72%). MS: [M+H]+=331.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09018214B2
Source datasetuspto-grants-2015_04
ORD IDord-fd0f2cb9c0f14cec95ecd74254b8ba8d
Source noteuspto-grants-2015_04