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Metallchelate des 3-Aroyl-6-aryl-2H-pyran-2,4(3H)-dions

✍ Scribed by Laćan, Marijan ;Susnik-Rybarski, Ivana ;Mesić, Eva ;Džanić, Husein

Publisher
John Wiley and Sons
Year
1980
Tongue
English
Weight
260 KB
Volume
1980
Category
Article
ISSN
0947-3440

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✦ Synopsis

Abstract

Die Metallchelate 3 und 4 mit Cu^2+^, Ni^2+^, Mg^2+^ und Co^2+^ wurden aus den 3‐Aroyl‐6‐aryl‐4‐hydroxy‐2‐pyronen 1 (Ar = Phenyl, p‐Tolyl, Biphenylyl oder Thienyl) und direkt eingesetzten oder in situ gebildeten Metallacetaten dargestellt.

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## Abstract An efficient synthesis of 3‐bromoacetyl‐4‐hydroxy‐6‐methyl‐2__H__‐pyran‐2‐one by bromination of dehydroacetic acid in glacial acetic acid is described. Novel 4‐hydroxy‐6‐methyl‐3‐(2‐substituted‐thiazol‐4‐yl)‐2__H__‐pyran‐2‐ones have been prepared from the reaction of 3‐bromoacetyl‐4‐hyd