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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2227531Generated: November 3, 2026

Hydrochloric Acid → HCID 18473924, compound

https://huagongshe.com/reaction/2227531

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantPyridineHCID 1049—
ReactantAcetic AnhydrideHCID 7918—
ReactantHCID 13749522HCID 13749522—
SolventWaterHCID 962—
ProductHCID 18473924HCID 18473924—

Reaction Conditions

Temperature80 °C

Reaction Steps

2-amino-5-[1-(indol-3-yl)ethyl]-2-oxazolin-4-one (100 mg) was dissolved into pyridine (0.5 ml). Acetic anhydride (117 μl) was added. The mixture was stirred for 2 hours at 80° C. To the reaction mixture was added water. The mixture was made acidic using 4N hydrochloric acid. The whole was extracted with ethyl acetate. The extract was washed with brine and dried over magnesium sulfate. Concentration of the solution gave a residue, which was subjected to the silica gel chromatography. The eluent with hexane-acetone (1:1) was collected and concentrated to provide the titled compound (16 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06414003B1
Source datasetuspto-grants-2002_07
ORD IDord-7b3c832c0b2b4ec28c812cdb06e832db
Source noteuspto-grants-2002_07