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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1754443Generated: October 28, 2026

Benzenesulfonic Acid → Benzenesulfonic Acid

https://huagongshe.com/reaction/1754443

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzenesulfonic AcidHCID 7371—
Reactant(7R,8aS)-N-(2-chloro-5-cyanopyrimidin-4-yl)-octahydro-5,5-dimethylindolizin-7-amineHCID 86704483—
Reactant1-(5-amino-2-(2-(tert-butyldimethylsilyl)oxyethoxy)-4-fluorophenyl)-4-methyl-1H-tetrazol-5(4H)-oneHCID 86704486—
SolventIsopropanolHCID 3776—
ProductBenzenesulfonic AcidHCID 7371—
Product4-((7R,8aS)-octahydro-5,5-dimethylindolizin-7-ylamino)-2-(4-(2-hydroxyethoxy)-2-fluoro-5-(4,5-dihydro-4-methyl-5-oxotetrazol-1-yl)phenylamino)pyrimidine-5-carbonitrileHCID 71811557—

Reaction Conditions

Temperature80 °C

Reaction Steps

A mixture of 1-(5-amino-2-(2-(tert-butyldimethylsilyl)oxyethoxy)-4-fluorophenyl)-4-methyl-1H-tetrazol-5(4H)-one (200 mg), (7R,8aS)—N-(2-chloro-5-cyanopyrimidin-4-yl)-octahydro-5,5-dimethylindolizin-7-amine (120 mg), and benzenesulfonic acid (120 mg) in IPA (2 mL) was heated to 80° C. overnight. After cooling to ambient temperature, the crude mixture was concentrated to dryness. The crude product was absorbed onto silica gel and purified by CombiFlash chromatography (2N NH3 in MeOH/CH2Cl2=0-20%) to give desired product with benzenesulfonic acid. The methanol solution of the salt was passed through an ion-exchange resin column to remove acid to give the free base of compound 78 (120 mg, 57%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09169249B2
Source datasetuspto-grants-2015_10
ORD IDord-50f98e2a38074d1da4b11d78c8cc9a28
Source noteuspto-grants-2015_10