β-keto-prolintane

α-PVP hydrochloride synthesis from 2-Bromovalerophenone (cas 49851-31-2) https://bbgate.com/threads/synthesis-of-alpha-pvp-1-10kg-scale.12/

a-PVP powder is crystallized in a solvent with 1g per 0.5-1 ml proportion. The solvent solution is prepared from water and alcohol in the 30/70, 50/50 or 70/30 ratio. It is very important to use well-purified a-PVP powder. A dirty product can make crystallization difficult. The solution is...