反应详情

温度

50 °C

To a 1-L round bottom flask were added N-[3-(1-methyl-piperidin-4-yl)-propyl]-N,N′-di-cbz-guanidine (140.6 g, 0.301 moles) and ethanol (500 mL, 200 proof). The flask was equipped with a heating mantle and warmed to 50° C. Once a yellow homogeneous solution was obtained, the heating mantle was exchanged for an ice bath and the mixture cooled to an internal temperature of 10° C. The resultant cold mixture was transferred to a 2.25 liter Parr bottle equipped with a thermocouple probe, and 10% Pd on Carbon (10 wt. %) in one portion. The bottle was charged with H2(g) (60 psi). The Parr bottle was kept pressurized with hydrogen gas for 15 minutes, then evacuated, re-pressurized with H2(g) (60 psi) and allowed to shake for an additional hour. The catalyst was removed by filtration (Zap-Cap) and washed with ethanol (300 ml, 200 proof). The solvent was removed under pressure to yield the title compound.

1. customThe flask was equipped with a heating mantle and
2. customOnce a yellow homogeneous solution was obtained
3. customthe heating mantle was exchanged for an ice bath
4. temperaturethe mixture cooled to an internal temperature of 10° C
5. additionThe bottle was charged with H2(g) (60 psi)
6. customevacuated, re-pressurized with H2(g) (60 psi)
7. waitto shake for an additional hour
8. customThe catalyst was removed by filtration (Zap-Cap)
9. washwashed with ethanol (300 ml, 200 proof)
10. customThe solvent was removed under pressure