Triethylamine → acetic acid 3-{(S)-3-[4-(4-isopropyl-benzenesulfonylamino)-phenyl]-pyrrolidin-1-yl}-propyl ester

0.21 g of 4-isopropyl-N-[4-((S)-pyrrolidin-3-yl)-phenyl]-benzenesulfonamide (0.62 mmol) were dissolved in 5 ml dimethylformamide. 0.0019 mg of sodium iodide (0.01 mmol) and 0.13 ml of triethylamine (0.94 mmol) were added, followed by addition of 0.136 mg of 3-acetoxy-1-bromo-propane (0.75 mmol). Stirring continued for 15 h at room temperature before the reaction mixture was poured onto 50 ml of crushed ice. The aqueous layer was extracted three times with ethyl acetate and the combined organic phases washed with water and saturated sodium chloride solution. The ethyl acetate phase was dried over magnesium sulfate, filtered, and evaporated to dryness under reduced pressure to yield 0.26 g of the crude product.

1. extractionThe aqueous layer was extracted three times with ethyl acetate
2. washthe combined organic phases washed with water and saturated sodium chloride solution
3. dry with materialThe ethyl acetate phase was dried over magnesium sulfate
4. filtrationfiltered
5. customevaporated to dryness under reduced pressure

ORD-Eintrag

ord-b9f7a428b1ec4a5fbad1f1280be657e3

Quelldatensatz

uspto-grants-2013_06

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08470810B2