Acid Dinitrile Research Articles

Effect of ammonium ions on the polarographic behavior of nitriles and amides of some pyridinecarboxylic acids

The character of the polarographic reduction of picolinonitrile, nicotinonitrile, isonicotinonitrile, isocinchomeronic acid dinitrile, picolinamide, and nicotinamide on a dropping mercury electrode with a buffer-solution base electrolyte in the presence of ammonium ions depends on the concentration of the ammonium ions, which interact with the ring nitrogen.

Reactions with the Arylhydrazones of some α‐cyanoketones

AbstractEthereal diazomethane reacts with the arylhydrazones of mesoxalic acid dinitrile 1a–c and of ethyl α‐cyanoglyoxalate 2b, d–g to yield the methylarylhydrazones 3a–c and 4a–e respectively. Treatment of 4b–e with phenylmagnesium bromide results in the formation of the imino derivatives 5a–d.Whereas 2a–g react with phenylhydrazine to yield the aminopyrazoles 8a–g, the hydrazides 10a, b are formed on treatment of 4c, e with hydrazine hydrate.1a–c react with hydrazine hydrate and with phenylhydrazine to yield 3‐amino‐4‐arylhydrazono‐5‐imino‐2‐pyrazoline derivatives 11a–f 11a, b react with acrylonitrile to yield 3‐amino‐1(β‐cyanoethyl)‐4‐arylhydrazono‐5‐imino‐2‐pyrazoline derivatives 12a, b which can be readily cyclised to the pyrazolo[3,2‐b]pyrimidine derivatives 13a, b by the action of hot acetic acid.

Synthesis of some substituted vinylferrocenes

Ferrocenyltricyanoethylene and 1-ferrocenyl-1,2-dicyano-2-(aurotriphenylphosphine)ethylene was obtained by the reaction of ferrocenylaurotriphenylphosphine with tetracyanoethylene and acetylenedicarboxylic acid dinitrile, respectively.

The IR spectrum of methylsuccinic acid dinitrile

The IR spectrum of methylsuccinic acid dinitrile

The kinetics of the polymerization of aryldichlorophosphine with butadiene

Earlier we described some of the mechanisms of aryldichlorophosphine (ADP) copolymerization [1–3], in particular of phenyldichlorophosphine (PDP), toluyldichlorophosphine (TDP), and chlorophenyldichlorophosphine (CPDP) with butadiene (B) at low % conversions (up to 10%); we found that the resulting copolymer composition was independent of the monomer mixture composition. The copolymerization constants r 1 and r 2, calculated in accordance with the Mayo and Lewis equation [4], were much smaller than unity and approached zero. Subsequent interest concentrated on the study of the ADP-B copolymerization rate at larger % conversions as a function of different factors. No reference could be found to this rate of copolymerization in the literature. The purpose of the study described here was to find the rate of ADP copolymerization with B as a function of initial monomer mixture composition, of the azo-bis-isobutyric acid dinitrile (AIBN) concentration, and of the presence of benzoquinone (BQ).

Cis-1,2-dicyan-1,2-difluor-äthylen

Vapour phase fluorination of dichlorofumaric acid dinitrile by a mixture of fluorides of alkaline/alkaline earth metals yields the dinitriles of difluoromaleic acid, chlorofluoromaleic acid and chlorofluorofumaric acid. Some reaction products of difluoromaleic acid dinitrile are described.

The decomposition of azoisobutyric acid dinitrile in vinylbutyl ether

1. We have studied the decomposition of azoisobutyric acid dinitrile by heating it with vinylbutyl ether. 2. We have shown the formation of compounds (CH32C=CH-N=N-C(CH3)2CN, isobutylene azoisobutyronitrile, which permits the conclusion of a split of the dinitrile of azoisobutyric acid with formation of the foflowing radicals: $$\begin{array}{*{20}c} \hfill {CH_3 CH_3 } \\ \hfill { \setminus / } \\ \hfill {C \cdot } \\ \hfill | \\ \hfill {CN} \\ \end{array} and\begin{array}{*{20}c} \hfill {CH_3 CH_3 } \\ \hfill { \setminus / } \\ \hfill {C - N:} \\ \hfill | \\ \hfill {CN} \\ \end{array}$$ 3. We have shown the formation of a low mofecular weight polymer which is evidently a compound of the type R-M-M-R, R-M-M-M-R, etc., where M is the monomer link.

Studies in the field of lactones and lactams

1. We have synthesized N-acryloyl lactams (N-acryloyl pyrrofidone, N-acryloyl piperidone, N-acryloyl caprolactam, N-methacryloyl pyrrofidone, N-methacryloyl piperidone, N-methacryloyl caprofactam). We have studied the infrared spectra of the compounds which we synthesized. 2. We have studied the polymerization of the N-acryloyl lactams under the influence of azoisobutyric acid dinitrile.

Investigations in the field of the chemical transformations of unsaturated and high-molecular compounds

1. The copolymerization of divinyl ether (I) and of the divinyl ether of ethylene glycol (II) with methacrylic acid in the presence of benzoyl peroxide and azoisobutyric acid dinitrile has been studied. 2. The copolymers of divinyl ether (I) and of the divinyl ether of ethylene glycol (II) with methacrylic acid have a trimeric structure; the copolymers containing up to 6.56 mole-% of ethylene glycol divinyl ether units are an exception. 3. Under the influence of various iniators the copolymerization of divinyl ether (I) and of the divinyl ether of ethylene glycol (II) with methacrylic acid is accompanied by competing reactions.