Photochemistry of 2,2-Dimethyl-2H-Furo[3,4-b]Pyran-4,7(3H, 5H)-Dione
✍ Scribed by Sabine Lau; Paul Margaretha
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- German
- Weight
- 201 KB
- Volume
- 71
- Category
- Article
- ISSN
- 0018-019X
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## 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.
## 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