Pickel, Thomas C. published the artcileSynthesis of Previously Inaccessible Derivatives of 1,4,7-Tri-R-1,4,7-Triazacyclononane, Including Chiral Examples, and a Rapid Synthesis of the HCl Salts of H3tacn and H4dtne, Recommanded Product: N1,N2-Dibenzylethane-1,2-diamine, the publication is European Journal of Organic Chemistry (2018), 2018(48), 6876-6889, database is CAplus.
Unsym. triazacyclononanes with one or two tertiary alkyl nitrogen substituents, including nonracemic N-substituted triazacyclononanes, such as I and II, were prepared using the “crab-like” cyclization of N,N’-bis(chloroacetyl)ethanediamines with amines as the key step. Tert-butyl-substituted triazacyclononanes were deprotected with acid to yield triazacyclononane hydrochlorides, including the trihydrochloride of 1,4,7-triazacyclononane and a binucleating N-ethylene bridged derivative The structures of the copper(I) complexes of I and two other triazacyclononanes and the structure of II were determined by X-ray crystallog.
European Journal of Organic Chemistry published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C16H20N2, Recommanded Product: N1,N2-Dibenzylethane-1,2-diamine.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia