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ChemInform Abstract: UNTERSUCHUNGEN AUF DEM PYRAZOLIDIN-GEBIET 16. MITT. HERSTELLUNG UND STRUKTUR VON KUPPLUNGSPRODUKTEN DER 4-AETHYLIDEN-DERIVATE VON 1,2-DIPHENYL-3,5-DIOXO-PYRAZOLIDIN MIT DIAZO-VERBINDUNGEN

Authors:
V. G. JAKUTOVIC
V. G. JAKUTOVIC
V. G. JAKUTOVIC
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B. L. MOLDAVER
B. L. MOLDAVER
B. L. MOLDAVER
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JU. P. KITAEV
JU. P. KITAEV
JU. P. KITAEV
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Z. S. TITOVA
Z. S. TITOVA
Z. S. TITOVA
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Abstract

Methyl- bzw. 4-α-Phenyl-äthyliden-1,2-diphenyl-3,S-dioxopyrazolidin (II) läßt sich mit aromatischen Diazoverbindungen (I) in Essigsäure in Gegenwart von Kaliumacetat bei 15 - 18°C zu kristallisierbaren, gefärbten Produkten (III) (orangerot bis rot, rotbraun bis dunkelbraun oder schwarzviolett bis schwarzblau) kuppeln (Ausbeute 80-90%).

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