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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1088723Generated: November 4, 2026

Trifluoroacetic acid → Benzo[b]thiophene-5-ol, 2,3-dihydro-

https://huagongshe.com/reaction/1088723

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
ReactantTriethylsilaneHCID 12052—
ReactantBenzo[b]thiophen-5-olHCID 12203499—
ReactantHCID 178418361HCID 178418361—
ProductBenzo[b]thiophene-5-ol, 2,3-dihydro-HCID 11367101—

Reaction Steps

Scheme I depicts the preparation of the simplest member (2) of the invention, that is where R4 and R6 are both hydrogen. Triethylsilane is reacted with 5-hydroxybenzothiophene in a suitable solvent, e.g, trifluoroacetic acid (TFA) to yield the 5-hydroxy-2,3-dihydrobenzothiophene. ##STR4##

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04963580
Source datasetuspto-grants-1990_10
ORD IDord-aaf8dab87dc744f295cf771677efde33
Source noteuspto-grants-1990_10