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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 35539Generated: October 28, 2026

Acetic Acid → 3-Hydroxy-2-phenyl-6-azabenzo[b]thiophene

https://huagongshe.com/reaction/35539

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetic AcidHCID 176—
ReactantSodium hydrideHCID 24758—
ReactantMethyl 3-phenylmethylthiopyridine-4-carboxylateHCID 86742398—
SolventDimethylformamideHCID 6228—
SolventTetrahydrofuranHCID 8028—
Product3-Hydroxy-2-phenyl-6-azabenzo[b]thiopheneHCID 1467382038%

Reaction Conditions

Temperature60 °C

Reaction Steps

A solution of 4.8 g (19 mmol) of methyl 3-phenylmethylthiopyridine-4-carboxylate in 10 mL of tetrahydrofuran was added to a slurry of 2.40 g (60 mmol) of 60% sodium hydride in 10 mL of N,N-dimethylformamide and the resulting mixture was stirred at 60° C. for 3 hours. The solution was poured onto ice water and acidified with glacial acetic acid. The filtrate was collected to afford 1.6 g (38%) of white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04767766
Source datasetuspto-grants-1988_08
ORD IDord-5c9fce38eb274a838188106b5d0e387b
Source noteuspto-grants-1988_08