Reaktion #1707

Reaktionsgleichung

Compound 1

7-(Pyridin-4-ylmethoxy)-1,2,3,4-tetrahydronaphthalen-1-one

benzyl amine

→

Compound 12

Ausbeute 97.7%

N-Benzyl-1-amino-7-(pyridin-4-ylmethoxy)-1,2,3,4-tetrahydronaphthalene

Ausbeute 97.7%

Lösungsmittel

benzene

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturto reflux under azeotropic conditions
2. 2
   SonstigeAfter the calculated amount of water was collected
3. 3
   Temperaturthe reaction was cooled
4. 4
   Einengenconcentrated in vacuo
5. 5
   workup.ADDITIONadded to a slurry of sodium boroydride (246 mg, 6.48 mmol) in ethanol (15 mL)
6. 6
   Temperaturcooled
7. 7
   Einengenconcentrated in vacuo
8. 8
   workup.ADDITIONThe residue was diluted with ethyl acetate
9. 9
   workup.ADDITIONfollowed by the slow addition of 1N hydrochloric acid
10. 10
    SonstigeThe layers were separated
11. 11
    Extraktionextracted with methylene chloride (2×)
12. 12
    Waschenwashed with brine
13. 13
    Trocknendried over anhydrous magnesium sulfate
14. 14
    Filtrationfiltered
15. 15
    Einengenconcentrated in vacuo

Vorschrift

A solution of Compound 1 (820 mg, 3.24 mmol) and benzyl amine (354 μL, 3.24 mmol) in benzene (10 mL) was heated to reflux under azeotropic conditions. After the calculated amount of water was collected, the reaction was cooled and concentrated in vacuo. The residue was taken-up into ethanol (5 mL) and added to a slurry of sodium boroydride (246 mg, 6.48 mmol) in ethanol (15 mL). The reaction was heated to 80° C., stirred for 30 min, cooled and concentrated in vacuo. The residue was diluted with ethyl acetate followed by the slow addition of 1N hydrochloric acid. The layers were separated. The aqueous phase was adjusted to pH 7 with 2N sodium hydroxide and extracted with methylene chloride (2×). The organics were combined, washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. Chromatography on silica gel (elution with 5% methanol:methylene chloride) provided 1.09 g of Compound 12 as an oil.

Quelle