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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 128259Generated: October 26, 2026

2-Aminopyridine → 4-Hydroxy-2-methyl-N-(2-pyridyl)-2H-[1]benzothieno[2,3-e]-1,2-thiazine-3-carboxamide-1,1-dioxide

https://huagongshe.com/reaction/128259

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-AminopyridineHCID 10439—
Reactant3-carbomethoxy-4-hydroxy-2-methyl-2H-[1]benzothieno[2,3-e]-1,2-thiazine 1,1-dioxideHCID 54707259—
Product4-Hydroxy-2-methyl-N-(2-pyridyl)-2H-[1]benzothieno[2,3-e]-1,2-thiazine-3-carboxamide-1,1-dioxideHCID 5470726052%

Reaction Steps

Prepared analogous to Example 1 from methyl 4-hydroxy-2-methyl-2H-[1]-benzothieno[2,3-e]-1,2-thiazine-3-carboxylate-1,1-dioxide and 2-amino-pyridine with a yield of 52% of theory.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04259336
Source datasetuspto-grants-1981_03
ORD IDord-5eecc246b8d840d999a190e294a9e87b
Source noteuspto-grants-1981_03