Stevenson, Geo. W. et al. published their research in Journal of the American Chemical Society in 1958 | CAS: 7528-78-1

3,3′,3”-Nitrilotripropanenitrile (cas: 7528-78-1) belongs to nitriles. Nitrile function is a very important functional group because it can be manipulated to other functional groups such as carboxylic acid by hydrolysis or amine by reduction, respectively. Nitriles are susceptible to hydrogenation over diverse metal catalysts. The reaction can afford either the primary amine (RCH2NH2) or the tertiary amine ((RCH2)3N), depending on conditions.Product Details of 7528-78-1

Base strengths of cyanoamines was written by Stevenson, Geo. W.;Williamson, Dallas. And the article was included in Journal of the American Chemical Society in 1958.Product Details of 7528-78-1 This article mentions the following:

Conjugate acids of cyanoamines have the following pKa: Et2NCN -2.0 ± 0.3, Et2NCH2CN 4.55, Et2N(CH2)2CN 7.65, Et2N(CH2)3CN 9.29, Et2N(CH2)4CN 10.08, Et2N(CH2)5CN 10.46, Et2NCMe2CN 9.13, HN(CH2CN)2 0.2 ± 0.1, EtN(CH2CN)2 -0.6 ± 0.1, HN(CH2CH2CN)2 5.26, EtN(CH2CH2CN)2 4.55, N(CH2CH2CN)3 1.1 ± 0.1, H2NCH2CN 5.34, piperidinoacetonitrile 4.55, α-piperidinoisobutyronitrile 9.22, β-(N-amphetamine)propionitrile 7.23, β-(N-methamphetamine)propionitrile 6.95, and β-(N-norcodeine)propionitrile 5.68. The cyano group has a base-weakening effect attributed to inductive and field effects. Hall’s equations (C.A. 52, 1735f) were used to estimate σ* values for the cyanoalkyl groups. pKa was determined by potentiometric titration of the strong bases with HCl or of salts of weaker bases with NaOH. For the very weak bases titration curves were determined spectrophotometrically at 210 mμ, the bases showing considerable absorption at this wave length and the salts very little. In the experiment, the researchers used many compounds, for example, 3,3′,3”-Nitrilotripropanenitrile (cas: 7528-78-1Product Details of 7528-78-1).

3,3′,3”-Nitrilotripropanenitrile (cas: 7528-78-1) belongs to nitriles. Nitrile function is a very important functional group because it can be manipulated to other functional groups such as carboxylic acid by hydrolysis or amine by reduction, respectively. Nitriles are susceptible to hydrogenation over diverse metal catalysts. The reaction can afford either the primary amine (RCH2NH2) or the tertiary amine ((RCH2)3N), depending on conditions.Product Details of 7528-78-1

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts