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Synthesis of 2-oxo-3H-furo[3,2-c]pyrylium salts and 4-pyrone-3-acetic acid by acylation of β-aroylpropionic acids

✍ Scribed by Yu. I. Ryabukhin; V. V. Mezheritskii; V. I. Dulenko; N. I. Basina; G. N. Dorofeenko


Book ID
112351302
Publisher
Springer US
Year
1979
Tongue
English
Weight
274 KB
Volume
15
Category
Article
ISSN
0009-3122

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## Abstract A one‐step ‘ring switching’ transformation of (__S__)‐3‐[(dimethylamino)methylidene]‐5‐(methoxycarbonyl)tetrahydrofuran‐2‐one (**4**) with 2‐pyridineacetic acid derivatives (**5–7**) and 2‐aminopyridines (**8, 9**) afforded the corresponding 3‐(4‐oxo‐4__H__‐quinolizinyl‐3)‐ **(15–17)**