Borane → (4-(Ethylsulfonyl)phenyl)methanol

温度

70 °C

To a stirring solution of 4-(ethylsulfonyl)benzoic acid (500 mg, 2.33 mmol) in THF (5 mL) at 0° C. under argon was added 1 M borane in THF solution (3.5 mL, 3.5 mmol). The reaction mixture was stirred at 70° C. for 20 min. The reaction mixture was then cooled to room temperature, and the THF was removed under reduced pressure. The residue thus obtained was diluted with methanol (5 mL) and stirred for 5 min. Methanol was then removed under reduced pressure. This process was repeated two more times to ensure complete methanolysis of any borane complex. After residual solvent removal under vacuum, 420 mg of the title compound was obtained as a colorless gum. HPLC/MS: retention time=1.373 min, [M+H]+=201.

1. temperatureThe reaction mixture was then cooled to room temperature
2. customthe THF was removed under reduced pressure
3. customThe residue thus obtained
4. stirringstirred for 5 min
5. customMethanol was then removed under reduced pressure
6. customAfter residual solvent removal under vacuum

ORDレコード

ord-21b31bf49666462ba77751cc0b5fffaa

出典データセット

uspto-grants-2009_08

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US07572808B2