Electrochemical behavior of the product of coupling of crotononitrile with aryldiazonium salts

It has been reported that compounds la-c couple with aromatic diazonium salts to yield the corresponding hydrazones 2a-c, which readily cyclize into the pyridazines 3a-c, c.f. Plate 1. However, Mittelbach [1] reported that at least the product of coupling component 1 c with aromatic diazonium salts would be 3 c, so that compound 2 c could have never been isolated. This led Mettelbach [1] to suggest that the coupling products assigned by Elnagdi et al. [2] as being of the types of compound 2 would be in fact related to compounds 3

Metal chelates of 3-amino-2-substituted crotononitrile

Synthetic heterocyclic organic chemistry involves specially designed reagents which are readily generated and then used to provide molecules built-in functional moieties usually utilized several applications. Important examples of such reagents are Beta-amino crotononitrile which have been proven to be valuable in the synthesis of a wide variety of unique heterocyclic systems such as pharmaceuticals, fungicides and solvatochromatic dyes [1-4]. It is known that metal complexes have greater activity than the coordinating agents themselves [5]. Synthesis and characterization of solid complexes of several transition metal cations were the primary concern of our earlier work [6-15]. However, it seems that no studies have been made on the complexes of compound [I] in the solution phase or in the solid state, which will be investigated in the present study. Conductometric, spectrophotometric measurements are used for characterization of some of these complexes as well as elemental analysis, magnetic measurements and spectral [electronic, IR] studies. The mechanism of the chelation process will also be investigated for each of the different ions used

electroresection of some 1,4-diazaspiro [5.5] under ane-3-imino-5-ones in aqueous buffered media at Hg cathode

The palarographic behavior of the title compounds in aqueous buffered media at DME was investigated. The mechanism of the electrode process was proposed and discussed. The identified resulting electrolysis product in high yield [70%] was the corresponding amino formed through the uptake of two electrons of the protonated imino, in a diffusion controlled irreversible process