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Stepwise stability constants and thermodynamic functions of 1-phenyl-3-methyl-4-(2-hydroxyphenyl)-hydrazono-2-pyrazoline-5-one complexes with transition metals

✍ Scribed by A.K. Jain; R.N. Goyal; D.D. Agarwal

Publisher: Elsevier Science
Year: 1981
Tongue: English
Weight: 217 KB
Volume: 47
Category: Article
ISSN: 0040-6031
DOI: 10.1016/0040-6031(81)85113-1

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## Abstract 4‐(Dicyanomethylene)‐3‐methyl‐1‐phenyl‐2‐pyrazoline‐5‐one (1) readily reacts with α‐amino acids and their esters by Michael addition and subsequent elimination of HCN to the adducts 2a–k. One of these, 2i (obtained from methyl glycinate), adds stereoselectively to __N__‐phenylmaleimide