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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 570835Generated: October 30, 2026

Hydrochloric Acid → 4-(3-Butyl-4-cyano-2-methylpyrrole-1-yl)benzoic acid

https://huagongshe.com/reaction/570835

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantLithium hydroxide, monohydrateHCID 168937—
Reactant4-(3-Butyl-4-cyano-2-methylpyrrole-1-yl)benzoic acid ethyl esterHCID 59478057—
SolventEthanolHCID 702—
SolventWaterHCID 962—
Product4-(3-Butyl-4-cyano-2-methylpyrrole-1-yl)benzoic acidHCID 5947776498.9%

Reaction Conditions

Temperature50 °C

Reaction Steps

A suspension of 4-(3-butyl-4-cyano-2-methylpyrrole-1-yl)benzoic acid ethyl ester (0.030 g) and lithium hydroxide mono hydrate (0.041 g) in ethanol (2 mL) and water (1 mL) was stirred at 50° C. for 2 hours. To this reaction mixture was added 1 mol/L hydrochloric acid (5 mL), and this mixture was stirred at room temperature for 30 minutes. This reaction mixture was extracted with ethyl acetate, and this organic layer was washed with water, dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure to give the title compound (0.027 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09023882B2
Source datasetuspto-grants-2015_05
ORD IDord-339af673c05048f6ad5bbc8041fe35a8
Source noteuspto-grants-2015_05