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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1039320Generated: November 3, 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/1039320

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 numberUS08552037B2
Source datasetuspto-grants-2013_10
ORD IDord-25153ea1eca54ca0b01ca6142564df95
Source noteuspto-grants-2013_10