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Synthesis of 3-(dibromoacetyl)tropolone and its reactions with thioureas and thioamides

✍ Scribed by Yasunari Maeda; Kimiaki Imafuku

Book ID
112131169
Publisher
Journal of Heterocyclic Chemistry
Year
1995
Tongue
English
Weight
185 KB
Volume
32
Category
Article
ISSN
0022-152X

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## Abstract 1‐(Bromoacetyl)‐3‐methylazulene **(1a)** and methyl 3‐(bromoacetyl)azulene‐1‐carboxylate **(1b)** reacted with thioamides **3a,b** and thioureas **3c,d** in boiling ethanol to give the corresponding (4‐thiazolyl)azulenes **4a‐d** and **5a‐d** in good yields, respectively. The reactions