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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1802725Generated: November 2, 2026

Benzenesulfonic acid, 4-methyl-, compd. with pyridine (1:1) → N-[2-(2-Benzyl-7,8-dihydro-6H-indeno[5,4-d][1,3]oxazol-8-yl)ethyl]acetamide

https://huagongshe.com/reaction/1802725

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzenesulfonic acid, 4-methyl-, compd. with pyridine (1:1)HCID 466102—
ReactantN-{3-[2-(Acetylamino)ethyl]-4-hydroxy-2,3-dihydro-1H-inden-5-yl}-2-phenylacetamideHCID 57781256—
SolventO-XyleneHCID 7237—
ProductN-[2-(2-Benzyl-7,8-dihydro-6H-indeno[5,4-d][1,3]oxazol-8-yl)ethyl]acetamideHCID 5778124028%

Reaction Steps

N-{3-[2-(Acetylamino)ethyl]-4-hydroxy-2,3-dihydro-1H-inden-5-yl}-2-phenylacetamide (29.0 mg, 0.0823 mmol) and pyridinium p-toluenesulfonate (4.1 mg, 0.0164 mmol) were heated under reflux in xylene (2 mL) for 2.5 hr. The solvent was evaporated under reduced pressure and the residue was purified by silica gel column chromatography (NH, ethyl acetate/hexane=30/70→60/40) to give the title compound (7.7 mg, yield 28%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08349879B2
Source datasetuspto-grants-2013_01
ORD IDord-1732b367d3e444f580c5581020080cbd
Source noteuspto-grants-2013_01