Реакция #640585

Уравнение реакции

Methanol

3-Hydroxy-N-(2-nitrobenzyl)-3-phenyl propionic acid amide

tetrahydrofuran borane tetrahydrofuran

→

3-(2-nitrobenzylamino)-1-phenylpropanol

Растворители

tetrahydrofuran

Условия реакции

Обработка

1. 1
   workup.ADDITIONwas added dropwise
2. 2
   workup.ADDITIONAfter the dropwise addition
3. 3
   Другоеwas returned to room temperature
4. 4
   Температураheated
5. 5
   Температураto reflux for six hours
6. 6
   Температураto cool
7. 7
   Температураunder ice cooled condition and heated
8. 8
   Температураto reflux for 30 minutes
9. 9
   Температураto cool
10. 10
    Другоеthe solvent was evaporated
11. 11
    workup.ADDITION0.5 N hydrochloric acid water (30 ml) was added
12. 12
    ЭкстракцияAfter extracted with diethyl ether
13. 13
    Экстракцияextracted with ethyl acetate
14. 14
    СушкаThe organic layer was dried over anhydrous sodium sulfate
15. 15
    Другоеthe solvent was evaporated under reduced pressure

Методика

3-Hydroxy-N-(2-nitrobenzyl)-3-phenyl propionic acid amide (3.19 g, 10.6 mmol) was dissolved in tetrahydrofuran (50 ml) and under ice cooled condition, 1 M tetrahydrofuran-borane tetrahydrofuran solution (27.0 ml, 27.0 mmol) was added dropwise thereto. After the dropwise addition was finished, the reaction mixture was returned to room temperature and stirred for one hour, then heated to reflux for six hours and allowed to cool. Methanol (30 ml) was added thereto under ice cooled condition and heated to reflux for 30 minutes. After allowed to cool, the solvent was evaporated and 0.5 N hydrochloric acid water (30 ml) was added. After extracted with diethyl ether, the aqueous layer was adjusted to pH 8 with a saturated sodium hydrogen carbonate aqueous solution and extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and the solvent was evaporated under reduced pressure to obtain 3-(2-nitrobenzylamino)-1-phenylpropanol.

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