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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 748201Generated: October 30, 2026

Triethylamine → 2-(6-Methyl-2-pyridyl)-4H-1,3-benzothiazine-4-one

https://huagongshe.com/reaction/748201

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
ReactantBenzoic acid, 2-mercapto-, methyl esterHCID 21009—
Reactant6-Methylpyridine-2-carbonitrileHCID 74182—
SolventTolueneHCID 1140—
Product2-(6-Methyl-2-pyridyl)-4H-1,3-benzothiazine-4-oneHCID 2293958655%

Reaction Steps

A mixture of methyl thiosalicylate (0.85 g, 5.1 mmol), 2-cyano-6-methylpyridine (0.60 g, 5.1 mmol), triethylamine (1.10 ml, 7.9 mmol) and toluene (1.1 ml) was refluxed for 9 hrs. After cooling, the precipitated crystals were collected by filtration and recrystallized from ethanol to give the titled compound (0.71 g, 55%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07399759B2
Source datasetuspto-grants-2008_07
ORD IDord-ebd51ba179cd475b811a4a697a811f66
Source noteuspto-grants-2008_07