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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 920189Generated: October 25, 2026

5-(Difluoromethoxy)picolinic acid → 5-Difluoromethoxy-pyridine-2-carboxylic acid [3-((R)-5-amino-3-methyl-1,1-dioxo-1,2,3,6-tetrahydro-1lambda6-[1,4]thiazin-3-yl)-4-fluoro-phenyl]-amide

https://huagongshe.com/reaction/920189

Reaction equation

Participants

RoleNameHCIDCharge
Reactant5-(Difluoromethoxy)picolinic acidHCID 57475871—
Reactant(R)-5-(5-amino-2-fluoro-phenyl)-5-methyl-1,1-dioxo-1,2,5,6-tetrahydro-1lambda6-[1,4]thiazin-3-ylamineHCID 90067101—
Product5-Difluoromethoxy-pyridine-2-carboxylic acid [3-((R)-5-amino-3-methyl-1,1-dioxo-1,2,3,6-tetrahydro-1lambda6-[1,4]thiazin-3-yl)-4-fluoro-phenyl]-amideHCID 7254796252.1%

Reaction Steps

Prepared from 5-(difluoromethoxy)picolinic acid (69.7 mg, 369 μmol, Eq: 1.00) and (R)-5-(5-amino-2-fluoro-phenyl)-5-methyl-1,1-dioxo-1,2,5,6-tetrahydro-1λ6-[1,4]thiazin-3-ylamine (100 mg, 369 μmol, Eq: 1.00) as described for example 2 (method b) to give the title compound (85 mg, 192 μmol, 52.1% yield) as a white foam. MS (ISP): m/z=443.4 [(M+H)].

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09273042B2
Source datasetuspto-grants-2016_03
ORD IDord-2153c01f58e246c4a7b4d292984b9700
Source noteuspto-grants-2016_03