An investigation of Cu(II) and Ni(II)-catalysed hydrolysis of (di)imines

Dichlorido[2-(3,5-dimethyl-1H-pyrazol-1-yl-κN2)ethanamine-κN]zinc(II)

“…For imine hydrolysis in Schiff base compounds, see: ; Czaun et al (2010); Bu et al (1997); Koner & Ray (2008); Sinha et al (2003). For graph-set analysis, see: Bernstein et al (1995).…”

“…Imine hydrolysis in Schiff base compounds is quite common. It is usually driven by traces of water and the presence of acidic metal ions, especially in the case of the first row transition metal chlorides such as Co II (Guzei et al, 2010), Ni II (Czaun et al, 2010) and Cu II (Bu et al, 1997;Czaun et al, 2010;Koner & Ray, 2008;Sinha et al, 2003). In a recent attempt to prepare a Zn II complex from the reaction of 2-{[2-(3,5-dimethylpyrazol-1-yl)ethylimino]}-4,6-ditertbutylphenol with zinc(II) chloride, we isolated the title compound (I), a hydrolysis product of the imine to an amine.…”

Bis(2-hydroxyethanaminium) tetrachloridopalladate(II)

“…For the hydrolysis of imines in Schiff base first-row transition metal complexes, see: Chattopadhyay et al (2007); Czaun et al (2010); Guzei et al (2010); Lee et al (1948). For the use of Schiff base first-row transition metal complexes as amine protecting groups, see: Deng et al (2002); Kurita (2001); Shelley et al (1999).…”

“…Hydrolysis of imines in Schiff base first row transition metal complexes is now common (Chattopadhyay et al 2007, Czaun et al, 2010Guzei et al, 2010;Lee et al, 1948) These metal complexes have been used to protect amines by first converting them to imines followed by metal assisted hydrolysis back to the amine (Deng et al, 2002;Kurita, 2001;Shelley et al, 1999). However, hydrolysis of imines by second row transition metal complexes is very rare.…”

Hydrolysis Kinetic Studies of Schiff Bases Derived from Pyrrolic Aldehydes in Buffered Aqueous Ethanol and Sulfuric Acid Solutions: Structural Effects of Substitutes

“…Some empirical hydrolysis curves of some series of Schiff bases in the range of pH values from 0 to 14 and different mechanisms have been proposed by researchers . Schiff bases were also used as ligands for the metal complex; their hydrolysis assisted by a metal catalyst was investigated , and they were also used as acid–base indicators as reported by Khalil et al. .…”