Isopropanol ethanol → HCID 178480300, compound

Participants

Reaction Steps

A 13 gal (50 liter) Hastelloy pressure reactor equipped with a mechanical agitator, cooling/heating jacket, and addition lines was charged with a solution of 95/5 EtOH/IPA (27.00 kg) and N-[3-(1-methylpiperidin-4-yl) -propyl]-N,N′-di-Cbz-guanidine (7.28 kg, 14.97 mol). To the resultant solution, under nitrogen, was then added 10% Pd/C (50% wet, 0.50 kg). The reactor was sealed and sequentially placed under vacuum, nitrogen and vacuum to displace any air in the system. The reaction was stirred at 1000 RPM and 300-350 PSI of hydrogen while keeping the temperature below 35° C. using cooling water on the jacket. The reaction ceased to be exothermic after approximately 1.5 hours and was stirred for an additional hour at 300-350 PSI. The resultant slurry was filtered over Celite® to yield a solution containing the title compound. The solution was stored at 5° C. and used in the next step without further isolation or purification.

Provenance & Evidence