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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 911348Generated: October 26, 2026

2-Acetyl-5-methylthiophene → 1-(5-Methyl-2-thienyl)ethanol

https://huagongshe.com/reaction/911348

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Acetyl-5-methylthiopheneHCID 83655—
ReactantSodium borohydrideHCID 4311764—
SolventMethanolHCID 887—
Product1-(5-Methyl-2-thienyl)ethanolHCID 1509179598.1%

Reaction Steps

Add sodium borohydride (270 mg, 7.13 mmol) to a solution of 2-acetyl-5-methylthiophene (1.0 g, 7.13 mmol) in methanol (40 mL). Stir the mixture for 1 h at room temperature. Remove the solvent in vacuo and partition the residue between water and DCM. Separate the organic phase, dry over Na2SO4, filter and concentrate to obtain the desired intermediate as an oil (0.995 g, 98%) that was used without further purification. GC-MS m/z 142 (M+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08022062B2
Source datasetuspto-grants-2011_09
ORD IDord-35e11b1c7cc242e69b94091dbc8564d5
Source noteuspto-grants-2011_09