196929-78-9

(R)-(+)-2-Methyl-2-propanesulfinamide is white to light yellow crystal powde

Chiral ligand used in pharmaceutical compositions

suzuki reaction, useful reagent for synthesizing chiral amines.

Acetic acid (70 g), R-tert-butylsulfinylhydrazine (42 g), zinc powder (60.5 g) and dichloromethane (150 mL) were added to the reaction flask. The temperature was slowly heated to 35-42 °C . After 16 hours, the filtrate was poured into 70 mL water. Dichloromethane (75 g×5) was added for extraction. Collected the organic phase, added 48% NaOH to adjust ρΗ (7-8). Then added NaCl, the layers were separated and the organic phase was washed with 15 g saturated aqueous solution of sodium chloride. The solution was dried over magnesium sulfate. After filterED, filtrate was concentrated under reduced pressure at 25-30 °C until no slipping. N-heptane was replaced, 28 g mixed solvent of N-heptane and toluene (N-heptane: toluene = 6:1) were added to perform beating at low temperature, filtered to obtain (R)-(+)-2-Methyl-2-propanesulfinamide. Yield=83%

[1] Qian X, et al. A stereoselective synthesis of (S)-2-(((3-fluoro-4-methylphenoxy)carbonyl)(1-(4-((5-methyl-2-phenyloxazol-4-yl)methoxy)phenyl)ethyl)amino)acetic acid, a highly potent PPAR α/γ dual agonist. Tetrahedron, 2015; 71: 9408-9414.