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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1898089Generated: October 30, 2026

Propylphosphonic anhydride → 4-chloro-N-[5-chloro-2-(6-fluoro-2,3-dihydro-benzo[1,4]oxazine-4-carbonyl)-pyridin-3-yl]-3-trifluoromethyl-benzenesulfonamide

https://huagongshe.com/reaction/1898089

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPropylphosphonic anhydrideHCID 111923—
ReactantHCID 86606893HCID 86606893—
SolventTriethylamineHCID 8471—
Product4-chloro-N-[5-chloro-2-(6-fluoro-2,3-dihydro-benzo[1,4]oxazine-4-carbonyl)-pyridin-3-yl]-3-trifluoromethyl-benzenesulfonamideHCID 44177074—

Reaction Steps

6-Fluoro-3,4-dihydro-2H-benzo[1,4]oxazine 5-chloro-3-(4-chloro-3-(trifluoromethyl)phenylsulfonamido)picolinic acid, T3P, and Et3N were reacted according to the procedure D to provide the title compound. HPLC purification provided 4-chloro-N-[5-chloro-2-(6-fluoro-2,3-dihydro-benzo[1,4]oxazine-4-carbonyl)-pyridin-3-yl]-3-trifluoromethyl-benzenesulfonamide: Reverse phase HPLC gradient acetonitrile 0.1% TFA 20-95% in 4 min: 3.041 min MS m/z: 550.1 (M+H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08519135B2
Source datasetuspto-grants-2013_08
ORD IDord-e8627a08bb494afdb4e419990a1cb811
Source noteuspto-grants-2013_08