Reacción #657333

Ecuación de reacción

[1-(3-tert-butoxycarbonylamino-propyl)-piperidin-4-yl]-carbamic acid benzyl ester

→

desired compound

Rendimiento 100.0%

[3-(4-Amino-piperidin-1-yl)-propyl]carbamic acid tert-butyl ester

Rendimiento 100.0%

Disolventes

ethanol

Condiciones de reacción

Tratamiento posterior

1. 1
   Filtraciónthe mixture was filtered through a pad of Celite
2. 2
   Lavadowashing with ethanol (100 mL)
3. 3
   workup.ADDITIONThe resulting solution was treated with fresh palladium catalyst (2.25 g)
4. 4
   Otroplaced under an atmosphere of hydrogen (balloon) at 50° C
5. 5
   workup.WAITAfter 7 h
6. 6
   Otroconsumption of the starting material
7. 7
   Filtraciónfiltered through Celite
8. 8
   Lavadowashing with ethanol (200 mL)
9. 9
   ConcentraciónThe filtrate was concentrated

Procedimiento

To a solution of [1-(3-tert-butoxycarbonylamino-propyl)-piperidin-4-yl]-carbamic acid benzyl ester (16.9 g, 43.2 mmol, 1 equiv) in ethanol (200 mL) at 23° C. was added palladium on carbon (2.25 g, 10 wt. %, wet, Degussa type). The reaction vessel was placed under an atmosphere of hydrogen (balloon) and stirred for 14 h. At this time tlc analysis indicated the reaction was incomplete, the mixture was filtered through a pad of Celite, washing with ethanol (100 mL). The resulting solution was treated with fresh palladium catalyst (2.25 g), then placed under an atmosphere of hydrogen (balloon) at 50° C. After 7 h tlc analysis indicates complete consumption of the starting material. The reaction mixture was cooled to 23° C., and then filtered through Celite, washing with ethanol (200 mL). The filtrate was concentrated to give 11.1 g (43.2 mmol, 100%) of the desired compound.

Fuente