El Hajj, A. published the artcileNew process of preparation of pyrazolidine: synthesis, extraction and flow-sheet, Related Products of catalysis-chemistry, the publication is MATEC Web of Conferences (2013), 01045, database is CAplus.
A new process for the preparation of the pyrazolidine (PYRZ), by intramol. Raschig way was developed. Synthesis and extraction are described. The formation of pyrazolidine is carried out in two successive steps. The first involves the oxidation of 1,3-diaminopropane (DAP) by sodium hypochlorite and formation of N-chloro-1,3-diaminopropane. The second step consists of a cyclization of N-chloro-1,3-diaminopropane leading to pyrazolidine. For the extraction the authors determined 3 isothermal sections (289, 313, and 323 K) of the solid-liquid-liquid isobaric ternary system H2O-DAP-NaOH by isoplethic thermal anal. and acid-base titration The second stage involves a selective precipitation of the two compounds in form of a salt by addition of hydrochloric acid.
MATEC Web of Conferences published new progress about 10517-44-9. 10517-44-9 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is Propane-1,3-diamine dihydrochloride, and the molecular formula is C3H12Cl2N2, Related Products of catalysis-chemistry.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia